Merge branch 'main' into cut-release-v0.26.6

docs/kcl/index.md

@@ -7,6 +7,7 @@ layout: manual
 ## Table of Contents
 
 * [Types](kcl/types)
+* [Modules](kcl/modules)
 * [Known Issues](kcl/KNOWN-ISSUES)
 * [`abs`](kcl/abs)
 * [`acos`](kcl/acos)
@@ -19,6 +20,7 @@ layout: manual
 * [`angledLineToX`](kcl/angledLineToX)
 * [`angledLineToY`](kcl/angledLineToY)
 * [`arc`](kcl/arc)
+* [`arcTo`](kcl/arcTo)
 * [`asin`](kcl/asin)
 * [`assert`](kcl/assert)
 * [`assertEqual`](kcl/assertEqual)

docs/kcl/offsetPlane.md

@@ -9,7 +9,7 @@ Offset a plane by a distance along its normal.
 For example, if you offset the 'XZ' plane by 10, the new plane will be parallel to the 'XZ' plane and 10 units away from it.
 
 ```js
-offsetPlane(std_plane: StandardPlane, offset: number) -> PlaneData
+offsetPlane(std_plane: StandardPlane, offset: number) -> Plane
 ```
 
 
@@ -22,7 +22,7 @@ offsetPlane(std_plane: StandardPlane, offset: number) -> PlaneData
 
 ### Returns
 
-[`PlaneData`](/docs/kcl/types/PlaneData) - Data for a plane.
+[`Plane`](/docs/kcl/types/Plane) - A plane.
 
 
 ### Examples

docs/kcl/reduce.md

@@ -36,15 +36,15 @@ fn add = (a, b) => {
 
 // This function adds an array of numbers.
 // It uses the `reduce` function, to call the `add` function on every
-// element of the `array` parameter. The starting value is 0.
-fn sum = (array) => {
-  return reduce(array, 0, add)
+// element of the `arr` parameter. The starting value is 0.
+fn sum = (arr) => {
+  return reduce(arr, 0, add)
 }
 
 /* The above is basically like this pseudo-code:
-fn sum(array):
+fn sum(arr):
     let sumSoFar = 0
-    for i in array:
+    for i in arr:
         sumSoFar = add(sumSoFar, i)
     return sumSoFar */
 
@@ -60,8 +60,8 @@ assertEqual(sum([1, 2, 3]), 6, 0.00001, "1 + 2 + 3 summed is 6")
 // This example works just like the previous example above, but it uses
 // an anonymous `add` function as its parameter, instead of declaring a
 // named function outside.
-array = [1, 2, 3]
-sum = reduce(array, 0, (i, result_so_far) => {
+arr = [1, 2, 3]
+sum = reduce(arr, 0, (i, result_so_far) => {
   return i + result_so_far
 })
 

docs/kcl/types/ArcToData.md

@@ -0,0 +1,22 @@
+---
+title: "ArcToData"
+excerpt: "Data to draw a three point arc (arcTo)."
+layout: manual
+---
+
+Data to draw a three point arc (arcTo).
+
+**Type:** `object`
+
+
+
+
+
+## Properties
+
+| Property | Type | Description | Required |
+|----------|------|-------------|----------|
+| `end` |`[number, number]`| End point of the arc. A point in 3D space | No |
+| `interior` |`[number, number]`| Interior point of the arc. A point in 3D space | No |
+
+

docs/kcl/types/KclValue.md

@@ -180,7 +180,7 @@ A plane.
 
 | Property | Type | Description | Required |
 |----------|------|-------------|----------|
-| `type` |enum: `Plane`|  | No |
+| `type` |enum: [`Plane`](/docs/kcl/types/Plane)|  | No |
 | `id` |`string`| The id of the plane. | No |
 | `value` |[`PlaneType`](/docs/kcl/types/PlaneType)| Any KCL value. | No |
 | `origin` |[`Point3d`](/docs/kcl/types/Point3d)| Origin of the plane. | No |

docs/kcl/types/Plane.md

@@ -0,0 +1,27 @@
+---
+title: "Plane"
+excerpt: "A plane."
+layout: manual
+---
+
+A plane.
+
+**Type:** `object`
+
+
+
+
+
+## Properties
+
+| Property | Type | Description | Required |
+|----------|------|-------------|----------|
+| `id` |`string`| The id of the plane. | No |
+| `value` |[`PlaneType`](/docs/kcl/types/PlaneType)| A plane. | No |
+| `origin` |[`Point3d`](/docs/kcl/types/Point3d)| Origin of the plane. | No |
+| `xAxis` |[`Point3d`](/docs/kcl/types/Point3d)| What should the plane’s X axis be? | No |
+| `yAxis` |[`Point3d`](/docs/kcl/types/Point3d)| What should the plane’s Y axis be? | No |
+| `zAxis` |[`Point3d`](/docs/kcl/types/Point3d)| The z-axis (normal). | No |
+| `__meta` |`[` [`Metadata`](/docs/kcl/types/Metadata) `]`|  | No |
+
+

docs/kcl/types/PlaneData.md

@@ -1,10 +1,10 @@
 ---
 title: "PlaneData"
-excerpt: "Data for a plane."
+excerpt: "Orientation data that can be used to construct a plane, not a plane in itself."
 layout: manual
 ---
 
-Data for a plane.
+Orientation data that can be used to construct a plane, not a plane in itself.
 
 
 

docs/kcl/types/SketchData.md

@@ -22,6 +22,18 @@ Data for start sketch on. You can start a sketch on a plane or an solid.
 
 
 
+----
+Data for start sketch on. You can start a sketch on a plane or an solid.
+
+[`Plane`](/docs/kcl/types/Plane)
+
+
+
+
+
+
+
+
 ----
 Data for start sketch on. You can start a sketch on a plane or an solid.
 

e2e/playwright/file-tree.spec.ts

@@ -1135,3 +1135,189 @@ _test.describe('Deleting items from the file pane', () => {
     }
   )
 })
+
+_test.describe(
+  'Undo and redo do not keep history when navigating between files',
+  () => {
+    _test(
+      `open a file, change something, open a different file, hitting undo should do nothing`,
+      { tag: '@electron' },
+      async ({ browserName }, testInfo) => {
+        const { page } = await setupElectron({
+          testInfo,
+          folderSetupFn: async (dir) => {
+            const testDir = join(dir, 'testProject')
+            await fsp.mkdir(testDir, { recursive: true })
+            await fsp.copyFile(
+              executorInputPath('cylinder.kcl'),
+              join(testDir, 'main.kcl')
+            )
+            await fsp.copyFile(
+              executorInputPath('basic_fillet_cube_end.kcl'),
+              join(testDir, 'other.kcl')
+            )
+          },
+        })
+        const u = await getUtils(page)
+        await page.setViewportSize({ width: 1200, height: 500 })
+        page.on('console', console.log)
+
+        // Constants and locators
+        const projectCard = page.getByText('testProject')
+        const otherFile = page
+          .getByRole('listitem')
+          .filter({ has: page.getByRole('button', { name: 'other.kcl' }) })
+
+        await _test.step(
+          'Open project and make a change to the file',
+          async () => {
+            await projectCard.click()
+            await u.waitForPageLoad()
+
+            // Get the text in the code locator.
+            const originalText = await u.codeLocator.innerText()
+            // Click in the editor and add some new lines.
+            await u.codeLocator.click()
+
+            await page.keyboard.type(`sketch001 = startSketchOn('XY')
+    some other shit`)
+
+            // Ensure the content in the editor changed.
+            const newContent = await u.codeLocator.innerText()
+
+            expect(originalText !== newContent)
+          }
+        )
+
+        await _test.step('navigate to other.kcl', async () => {
+          await u.openFilePanel()
+
+          await otherFile.click()
+          await u.waitForPageLoad()
+          await u.openKclCodePanel()
+          await _expect(u.codeLocator).toContainText('getOppositeEdge(thing)')
+        })
+
+        await _test.step('hit undo', async () => {
+          // Get the original content of the file.
+          const originalText = await u.codeLocator.innerText()
+          // Now hit undo
+          await page.keyboard.down('ControlOrMeta')
+          await page.keyboard.press('KeyZ')
+          await page.keyboard.up('ControlOrMeta')
+
+          await page.waitForTimeout(100)
+          await expect(u.codeLocator).toContainText(originalText)
+        })
+      }
+    )
+
+    _test(
+      `open a file, change something, undo it, open a different file, hitting redo should do nothing`,
+      { tag: '@electron' },
+      // Skip on windows i think the keybindings are different for redo.
+      async ({ browserName }, testInfo) => {
+        test.skip(process.platform === 'win32', 'Skip on windows')
+        const { page } = await setupElectron({
+          testInfo,
+          folderSetupFn: async (dir) => {
+            const testDir = join(dir, 'testProject')
+            await fsp.mkdir(testDir, { recursive: true })
+            await fsp.copyFile(
+              executorInputPath('cylinder.kcl'),
+              join(testDir, 'main.kcl')
+            )
+            await fsp.copyFile(
+              executorInputPath('basic_fillet_cube_end.kcl'),
+              join(testDir, 'other.kcl')
+            )
+          },
+        })
+        const u = await getUtils(page)
+        await page.setViewportSize({ width: 1200, height: 500 })
+        page.on('console', console.log)
+
+        // Constants and locators
+        const projectCard = page.getByText('testProject')
+        const otherFile = page
+          .getByRole('listitem')
+          .filter({ has: page.getByRole('button', { name: 'other.kcl' }) })
+
+        const badContent = 'this shit'
+        await _test.step(
+          'Open project and make a change to the file',
+          async () => {
+            await projectCard.click()
+            await u.waitForPageLoad()
+
+            // Get the text in the code locator.
+            const originalText = await u.codeLocator.innerText()
+            // Click in the editor and add some new lines.
+            await u.codeLocator.click()
+
+            await page.keyboard.type(badContent)
+
+            // Ensure the content in the editor changed.
+            const newContent = await u.codeLocator.innerText()
+
+            expect(originalText !== newContent)
+
+            // Now hit undo
+            await page.keyboard.down('ControlOrMeta')
+            await page.keyboard.press('KeyZ')
+            await page.keyboard.up('ControlOrMeta')
+
+            await page.waitForTimeout(100)
+            await expect(u.codeLocator).toContainText(originalText)
+            await expect(u.codeLocator).not.toContainText(badContent)
+
+            // Hit redo.
+            await page.keyboard.down('Shift')
+            await page.keyboard.down('ControlOrMeta')
+            await page.keyboard.press('KeyZ')
+            await page.keyboard.up('ControlOrMeta')
+            await page.keyboard.up('Shift')
+
+            await page.waitForTimeout(100)
+            await expect(u.codeLocator).toContainText(originalText)
+            await expect(u.codeLocator).toContainText(badContent)
+
+            // Now hit undo
+            await page.keyboard.down('ControlOrMeta')
+            await page.keyboard.press('KeyZ')
+            await page.keyboard.up('ControlOrMeta')
+
+            await page.waitForTimeout(100)
+            await expect(u.codeLocator).toContainText(originalText)
+            await expect(u.codeLocator).not.toContainText(badContent)
+          }
+        )
+
+        await _test.step('navigate to other.kcl', async () => {
+          await u.openFilePanel()
+
+          await otherFile.click()
+          await u.waitForPageLoad()
+          await u.openKclCodePanel()
+          await _expect(u.codeLocator).toContainText('getOppositeEdge(thing)')
+          await expect(u.codeLocator).not.toContainText(badContent)
+        })
+
+        await _test.step('hit redo', async () => {
+          // Get the original content of the file.
+          const originalText = await u.codeLocator.innerText()
+          // Now hit redo
+          await page.keyboard.down('Shift')
+          await page.keyboard.down('ControlOrMeta')
+          await page.keyboard.press('KeyZ')
+          await page.keyboard.up('ControlOrMeta')
+          await page.keyboard.up('Shift')
+
+          await page.waitForTimeout(100)
+          await expect(u.codeLocator).toContainText(originalText)
+          await expect(u.codeLocator).not.toContainText(badContent)
+        })
+      }
+    )
+  }
+)

e2e/playwright/sketch-tests.spec.ts

@@ -1274,3 +1274,44 @@ test2.describe('Sketch mode should be toleratant to syntax errors', () => {
     }
   )
 })
+
+test2.describe(`Sketching with offset planes`, () => {
+  test2(
+    `Can select an offset plane to sketch on`,
+    async ({ app, scene, toolbar, editor }) => {
+      // We seed the scene with a single offset plane
+      await app.initialise(`offsetPlane001 = offsetPlane("XY", 10)`)
+
+      const [planeClick, planeHover] = scene.makeMouseHelpers(650, 200)
+
+      await test2.step(`Start sketching on the offset plane`, async () => {
+        await toolbar.startSketchPlaneSelection()
+
+        await test2.step(`Hovering should highlight code`, async () => {
+          await planeHover()
+          await editor.expectState({
+            activeLines: [`offsetPlane001=offsetPlane("XY",10)`],
+            diagnostics: [],
+            highlightedCode: 'offsetPlane("XY", 10)',
+          })
+        })
+
+        await test2.step(
+          `Clicking should select the plane and enter sketch mode`,
+          async () => {
+            await planeClick()
+            // Have to wait for engine-side animation to finish
+            await app.page.waitForTimeout(600)
+            await expect2(toolbar.lineBtn).toBeEnabled()
+            await editor.expectEditor.toContain('startSketchOn(offsetPlane001)')
+            await editor.expectState({
+              activeLines: [`offsetPlane001=offsetPlane("XY",10)`],
+              diagnostics: [],
+              highlightedCode: '',
+            })
+          }
+        )
+      })
+    }
+  )
+})

src/components/ModelingMachineProvider.tsx

@@ -63,6 +63,7 @@ import {
 import {
   moveValueIntoNewVariablePath,
   sketchOnExtrudedFace,
+  sketchOnOffsetPlane,
   startSketchOnDefault,
 } from 'lang/modifyAst'
 import { Program, parse, recast } from 'lang/wasm'
@@ -636,13 +637,16 @@ export const ModelingMachineProvider = ({
         ),
         'animate-to-face': fromPromise(async ({ input }) => {
           if (!input) return undefined
-          if (input.type === 'extrudeFace') {
-            const sketched = sketchOnExtrudedFace(
+          if (input.type === 'extrudeFace' || input.type === 'offsetPlane') {
+            const sketched =
+              input.type === 'extrudeFace'
+                ? sketchOnExtrudedFace(
                     kclManager.ast,
                     input.sketchPathToNode,
                     input.extrudePathToNode,
                     input.faceInfo
                   )
+                : sketchOnOffsetPlane(kclManager.ast, input.pathToNode)
             if (err(sketched)) {
               const sketchedError = new Error(
                 'Incompatible face, please try another'
@@ -654,10 +658,9 @@ export const ModelingMachineProvider = ({
 
             await kclManager.executeAstMock(modifiedAst)
 
-            await letEngineAnimateAndSyncCamAfter(
-              engineCommandManager,
-              input.faceId
-            )
+            const id =
+              input.type === 'extrudeFace' ? input.faceId : input.planeId
+            await letEngineAnimateAndSyncCamAfter(engineCommandManager, id)
             sceneInfra.camControls.syncDirection = 'clientToEngine'
             return {
               sketchPathToNode: pathToNewSketchNode,

src/components/ModelingSidebar/ModelingPanes/KclEditorPane.tsx

@@ -43,6 +43,7 @@ import {
   completionKeymap,
 } from '@codemirror/autocomplete'
 import CodeEditor from './CodeEditor'
+import { codeManagerHistoryCompartment } from 'lang/codeManager'
 
 export const editorShortcutMeta = {
   formatCode: {
@@ -89,7 +90,7 @@ export const KclEditorPane = () => {
         cursorBlinkRate: cursorBlinking.current ? 1200 : 0,
       }),
       lineHighlightField,
-      history(),
+      codeManagerHistoryCompartment.of(history()),
       closeBrackets(),
       codeFolding(),
       keymap.of([
@@ -121,7 +122,6 @@ export const KclEditorPane = () => {
         lineNumbers(),
         highlightActiveLineGutter(),
         highlightSpecialChars(),
-        history(),
         foldGutter(),
         EditorState.allowMultipleSelections.of(true),
         indentOnInput(),

src/hooks/useEngineConnectionSubscriptions.ts

@@ -88,6 +88,10 @@ export function useEngineConnectionSubscriptions() {
                 ? [codeRef.range]
                 : [codeRef.range, consumedCodeRef.range]
             )
+          } else if (artifact?.type === 'plane') {
+            const codeRef = artifact.codeRef
+            if (err(codeRef)) return
+            editorManager.setHighlightRange([codeRef.range])
           } else {
             editorManager.setHighlightRange([[0, 0]])
           }
@@ -186,8 +190,42 @@ export function useEngineConnectionSubscriptions() {
                 })
                 return
               }
+              const artifact =
+                engineCommandManager.artifactGraph.get(planeOrFaceId)
+
+              if (artifact?.type === 'plane') {
+                const planeInfo = await getFaceDetails(planeOrFaceId)
+                sceneInfra.modelingSend({
+                  type: 'Select default plane',
+                  data: {
+                    type: 'offsetPlane',
+                    zAxis: [
+                      planeInfo.z_axis.x,
+                      planeInfo.z_axis.y,
+                      planeInfo.z_axis.z,
+                    ],
+                    yAxis: [
+                      planeInfo.y_axis.x,
+                      planeInfo.y_axis.y,
+                      planeInfo.y_axis.z,
+                    ],
+                    position: [
+                      planeInfo.origin.x,
+                      planeInfo.origin.y,
+                      planeInfo.origin.z,
+                    ].map((num) => num / sceneInfra._baseUnitMultiplier) as [
+                      number,
+                      number,
+                      number
+                    ],
+                    planeId: planeOrFaceId,
+                    pathToNode: artifact.codeRef.pathToNode,
+                  },
+                })
+              }
+
+              // Artifact is likely an extrusion face
               const faceId = planeOrFaceId
-              const artifact = engineCommandManager.artifactGraph.get(faceId)
               const extrusion = getSweepFromSuspectedSweepSurface(
                 faceId,
                 engineCommandManager.artifactGraph

src/lang/codeManager.ts

@@ -6,14 +6,17 @@ import { isDesktop } from 'lib/isDesktop'
 import toast from 'react-hot-toast'
 import { editorManager } from 'lib/singletons'
 import { Annotation, Transaction } from '@codemirror/state'
-import { KeyBinding } from '@codemirror/view'
+import { EditorView, KeyBinding } from '@codemirror/view'
 import { recast, Program } from 'lang/wasm'
 import { err } from 'lib/trap'
+import { Compartment } from '@codemirror/state'
+import { history } from '@codemirror/commands'
 
 const PERSIST_CODE_KEY = 'persistCode'
 
 const codeManagerUpdateAnnotation = Annotation.define<boolean>()
 export const codeManagerUpdateEvent = codeManagerUpdateAnnotation.of(true)
+export const codeManagerHistoryCompartment = new Compartment()
 
 export default class CodeManager {
   private _code: string = bracket
@@ -90,9 +93,12 @@ export default class CodeManager {
   /**
    * Update the code in the editor.
    */
-  updateCodeEditor(code: string): void {
+  updateCodeEditor(code: string, clearHistory?: boolean): void {
     this.code = code
     if (editorManager.editorView) {
+      if (clearHistory) {
+        clearCodeMirrorHistory(editorManager.editorView)
+      }
       editorManager.editorView.dispatch({
         changes: {
           from: 0,
@@ -101,7 +107,7 @@ export default class CodeManager {
         },
         annotations: [
           codeManagerUpdateEvent,
-          Transaction.addToHistory.of(true),
+          Transaction.addToHistory.of(!clearHistory),
         ],
       })
     }
@@ -110,11 +116,11 @@ export default class CodeManager {
   /**
    * Update the code, state, and the code the code mirror editor sees.
    */
-  updateCodeStateEditor(code: string): void {
+  updateCodeStateEditor(code: string, clearHistory?: boolean): void {
     if (this._code !== code) {
       this.code = code
       this.#updateState(code)
-      this.updateCodeEditor(code)
+      this.updateCodeEditor(code, clearHistory)
     }
   }
 
@@ -167,3 +173,17 @@ function safeLSSetItem(key: string, value: string) {
   if (typeof window === 'undefined') return
   localStorage?.setItem(key, value)
 }
+
+function clearCodeMirrorHistory(view: EditorView) {
+  // Clear history
+  view.dispatch({
+    effects: [codeManagerHistoryCompartment.reconfigure([])],
+    annotations: [codeManagerUpdateEvent],
+  })
+
+  // Add history back
+  view.dispatch({
+    effects: [codeManagerHistoryCompartment.reconfigure([history()])],
+    annotations: [codeManagerUpdateEvent],
+  })
+}

src/lang/modifyAst.ts

@@ -19,6 +19,7 @@ import {
   ProgramMemory,
   SourceRange,
   sketchFromKclValue,
+  isPathToNodeNumber,
 } from './wasm'
 import {
   isNodeSafeToReplacePath,
@@ -526,6 +527,60 @@ export function sketchOnExtrudedFace(
   }
 }
 
+/**
+ * Modify the AST to create a new sketch using the variable declaration
+ * of an offset plane. The new sketch just has to come after the offset
+ * plane declaration.
+ */
+export function sketchOnOffsetPlane(
+  node: Node<Program>,
+  offsetPathToNode: PathToNode
+) {
+  let _node = { ...node }
+
+  // Find the offset plane declaration
+  const offsetPlaneDeclarator = getNodeFromPath<VariableDeclarator>(
+    _node,
+    offsetPathToNode,
+    'VariableDeclarator',
+    true
+  )
+  if (err(offsetPlaneDeclarator)) return offsetPlaneDeclarator
+  const { node: offsetPlaneNode } = offsetPlaneDeclarator
+  const offsetPlaneName = offsetPlaneNode.id.name
+
+  // Create a new sketch declaration
+  const newSketchName = findUniqueName(
+    node,
+    KCL_DEFAULT_CONSTANT_PREFIXES.SKETCH
+  )
+  const newSketch = createVariableDeclaration(
+    newSketchName,
+    createCallExpressionStdLib('startSketchOn', [
+      createIdentifier(offsetPlaneName),
+    ]),
+    undefined,
+    'const'
+  )
+
+  // Decide where to insert the new sketch declaration
+  const offsetIndex = offsetPathToNode[1][0]
+
+  if (!isPathToNodeNumber(offsetIndex)) {
+    return new Error('Expected offsetIndex to be a number')
+  }
+  // and insert it
+  _node.body.splice(offsetIndex + 1, 0, newSketch)
+  const newPathToNode = structuredClone(offsetPathToNode)
+  newPathToNode[1][0] = offsetIndex + 1
+
+  // Return the modified AST and the path to the new sketch declaration
+  return {
+    modifiedAst: _node,
+    pathToNode: newPathToNode,
+  }
+}
+
 export const getLastIndex = (pathToNode: PathToNode): number =>
   splitPathAtLastIndex(pathToNode).index
 

src/lang/std/artifactGraph.test.ts

@@ -98,12 +98,22 @@ sketch004 = startSketchOn(extrude003, seg02)
 |> close(%)
 extrude004 = extrude(3, sketch004)
 `
+const exampleCodeOffsetPlanes = `
+offsetPlane001 = offsetPlane("XY", 20)
+offsetPlane002 = offsetPlane("XZ", -50)
+offsetPlane003 = offsetPlane("YZ", 10)
+
+sketch002 = startSketchOn(offsetPlane001)
+  |> startProfileAt([0, 0], %)
+  |> line([6.78, 15.01], %)
+`
 
 // add more code snippets here and use `getCommands` to get the orderedCommands and responseMap for more tests
 const codeToWriteCacheFor = {
   exampleCode1,
   sketchOnFaceOnFaceEtc,
   exampleCodeNo3D,
+  exampleCodeOffsetPlanes,
 } as const
 
 type CodeKey = keyof typeof codeToWriteCacheFor
@@ -165,6 +175,52 @@ afterAll(() => {
 })
 
 describe('testing createArtifactGraph', () => {
+  describe('code with offset planes and a sketch:', () => {
+    let ast: Program
+    let theMap: ReturnType<typeof createArtifactGraph>
+
+    it('setup', () => {
+      // putting this logic in here because describe blocks runs before beforeAll has finished
+      const {
+        orderedCommands,
+        responseMap,
+        ast: _ast,
+      } = getCommands('exampleCodeOffsetPlanes')
+      ast = _ast
+      theMap = createArtifactGraph({ orderedCommands, responseMap, ast })
+    })
+
+    it(`there should be one sketch`, () => {
+      const sketches = [...filterArtifacts({ types: ['path'] }, theMap)].map(
+        (path) => expandPath(path[1], theMap)
+      )
+      expect(sketches).toHaveLength(1)
+      sketches.forEach((path) => {
+        if (err(path)) throw path
+        expect(path.type).toBe('path')
+      })
+    })
+
+    it(`there should be three offsetPlanes`, () => {
+      const offsetPlanes = [
+        ...filterArtifacts({ types: ['plane'] }, theMap),
+      ].map((plane) => expandPlane(plane[1], theMap))
+      expect(offsetPlanes).toHaveLength(3)
+      offsetPlanes.forEach((path) => {
+        expect(path.type).toBe('plane')
+      })
+    })
+
+    it(`Only one offset plane should have a path`, () => {
+      const offsetPlanes = [
+        ...filterArtifacts({ types: ['plane'] }, theMap),
+      ].map((plane) => expandPlane(plane[1], theMap))
+      const offsetPlaneWithPaths = offsetPlanes.filter(
+        (plane) => plane.paths.length
+      )
+      expect(offsetPlaneWithPaths).toHaveLength(1)
+    })
+  })
   describe('code with an extrusion, fillet and sketch of face:', () => {
     let ast: Program
     let theMap: ReturnType<typeof createArtifactGraph>

src/lang/std/artifactGraph.ts

@@ -249,7 +249,20 @@ export function getArtifactsToUpdate({
   const cmd = command.cmd
   const returnArr: ReturnType<typeof getArtifactsToUpdate> = []
   if (!response) return returnArr
-  if (cmd.type === 'enable_sketch_mode') {
+  if (cmd.type === 'make_plane' && range[1] !== 0) {
+    // If we're calling `make_plane` and the code range doesn't end at `0`
+    // it's not a default plane, but a custom one from the offsetPlane standard library function
+    return [
+      {
+        id,
+        artifact: {
+          type: 'plane',
+          pathIds: [],
+          codeRef: { range, pathToNode },
+        },
+      },
+    ]
+  } else if (cmd.type === 'enable_sketch_mode') {
     const plane = getArtifact(currentPlaneId)
     const pathIds = plane?.type === 'plane' ? plane?.pathIds : []
     const codeRef =

src/lang/wasm.ts

@@ -144,6 +144,12 @@ export const parse = (code: string | Error): Node<Program> | Error => {
 
 export type PathToNode = [string | number, string][]
 
+export const isPathToNodeNumber = (
+  pathToNode: string | number
+): pathToNode is number => {
+  return typeof pathToNode === 'number'
+}
+
 export interface ExecState {
   memory: ProgramMemory
   idGenerator: IdGenerator

src/lib/routeLoaders.ts

@@ -124,7 +124,9 @@ export const fileLoader: LoaderFunction = async (
       // We explicitly do not write to the file here since we are loading from
       // the file system and not the editor.
       codeManager.updateCurrentFilePath(currentFilePath)
-      codeManager.updateCodeStateEditor(code)
+      // We pass true on the end here to clear the code editor history.
+      // This way undo and redo are not super weird when opening new files.
+      codeManager.updateCodeStateEditor(code, true)
     }
 
     // Set the file system manager to the project path

src/machines/modelingMachine.ts

@@ -159,6 +159,15 @@ export type DefaultPlane = {
   yAxis: [number, number, number]
 }
 
+export type OffsetPlane = {
+  type: 'offsetPlane'
+  position: [number, number, number]
+  planeId: string
+  pathToNode: PathToNode
+  zAxis: [number, number, number]
+  yAxis: [number, number, number]
+}
+
 export type SegmentOverlayPayload =
   | {
       type: 'set-one'
@@ -198,7 +207,7 @@ export type ModelingMachineEvent =
   | { type: 'Sketch On Face' }
   | {
       type: 'Select default plane'
-      data: DefaultPlane | ExtrudeFacePlane
+      data: DefaultPlane | ExtrudeFacePlane | OffsetPlane
     }
   | {
       type: 'Set selection'
@@ -1394,7 +1403,7 @@ export const modelingMachine = setup({
       }
     ),
     'animate-to-face': fromPromise(
-      async (_: { input?: ExtrudeFacePlane | DefaultPlane }) => {
+      async (_: { input?: ExtrudeFacePlane | DefaultPlane | OffsetPlane }) => {
         return {} as
           | undefined
           | {

src/wasm-lib/Cargo.lock

@@ -1589,6 +1589,8 @@ dependencies = [
  "console",
  "lazy_static",
  "linked-hash-map",
+ "pest",
+ "pest_derive",
  "regex",
  "serde",
  "similar",
@@ -1689,6 +1691,7 @@ dependencies = [
  "databake",
  "derive-docs",
  "expectorate",
+ "fnv",
  "form_urlencoded",
  "futures",
  "git_rev",

src/wasm-lib/justfile

@@ -9,19 +9,14 @@ new-test name:
 lint:
     cargo clippy --workspace --all-targets -- -D warnings
 
+# Generate the stdlib image artifacts
+# Then run the stdlib docs generation
 redo-kcl-stdlib-docs:
+    TWENTY_TWENTY=overwrite {{cnr}} -p kcl-lib kcl_test_example
     EXPECTORATE=overwrite {{cnr}} -p kcl-lib docs::gen_std_tests::test_generate_stdlib
 
 # Create a new KCL deterministic simulation test case.
-new-sim-test test_name kcl_program render_to_png="true":
-    # Each test file gets its own directory. This will contain the KCL program, and its
-    # snapshotted artifacts (e.g. serialized tokens, serialized ASTs, program memory,
-    # PNG snapshots, etc).
-    mkdir kcl/tests/{{test_name}}
-    echo "{{kcl_program}}" > kcl/tests/{{test_name}}/input.kcl
-    # Add the various tests for this new test case.
-    cat kcl/tests/simtest.tmpl | sed "s/TEST_NAME_HERE/{{test_name}}/" | sed "s/RENDER_TO_PNG/{{render_to_png}}/" >> kcl/src/simulation_tests.rs
-    # Run all the tests for the first time, in the right order.
+new-sim-test test_name render_to_png="true":
     {{cita}} -p kcl-lib -- tests::{{test_name}}::tokenize
     {{cita}} -p kcl-lib -- tests::{{test_name}}::parse
     {{cita}} -p kcl-lib -- tests::{{test_name}}::unparse

src/wasm-lib/kcl/Cargo.toml

@@ -21,6 +21,7 @@ convert_case = "0.6.0"
 dashmap = "6.1.0"
 databake = { version = "0.1.8", features = ["derive"] }
 derive-docs = { version = "0.1.29", path = "../derive-docs" }
+fnv = "1.0.7"
 form_urlencoded = "1.2.1"
 futures = { version = "0.3.31" }
 git_rev = "0.1.0"
@@ -86,7 +87,7 @@ expectorate = "1.1.0"
 handlebars = "6.2.0"
 iai = "0.1"
 image = { version = "0.25.5", default-features = false, features = ["png"] }
-insta = { version = "1.41.1", features = ["json", "filters"] }
+insta = { version = "1.41.1", features = ["json", "filters", "redactions"] }
 itertools = "0.13.0"
 pretty_assertions = "1.4.1"
 tokio = { version = "1.40.0", features = ["rt-multi-thread", "macros", "time"] }

src/wasm-lib/kcl/benches/compiler_benchmark_criterion.rs

@@ -39,5 +39,5 @@ const KITT_PROGRAM: &str = include_str!("../../tests/executor/inputs/kittycad_sv
 const PIPES_PROGRAM: &str = include_str!("../../tests/executor/inputs/pipes_on_pipes.kcl");
 const CUBE_PROGRAM: &str = include_str!("../../tests/executor/inputs/cube.kcl");
 const MATH_PROGRAM: &str = include_str!("../../tests/executor/inputs/math.kcl");
-const MIKE_STRESS_TEST_PROGRAM: &str = include_str!("../../tests/executor/inputs/mike_stress_test.kcl");
+const MIKE_STRESS_TEST_PROGRAM: &str = include_str!("../tests/mike_stress_test/input.kcl");
 const LSYSTEM_KOCH_SNOWFLAKE_PROGRAM: &str = include_str!("../../tests/executor/inputs/lsystem.kcl");

src/wasm-lib/kcl/benches/digest_benchmark.rs

@@ -28,5 +28,5 @@ const KITT_PROGRAM: &str = include_str!("../../tests/executor/inputs/kittycad_sv
 const PIPES_PROGRAM: &str = include_str!("../../tests/executor/inputs/pipes_on_pipes.kcl");
 const CUBE_PROGRAM: &str = include_str!("../../tests/executor/inputs/cube.kcl");
 const MATH_PROGRAM: &str = include_str!("../../tests/executor/inputs/math.kcl");
-const MIKE_STRESS_TEST_PROGRAM: &str = include_str!("../../tests/executor/inputs/mike_stress_test.kcl");
+const MIKE_STRESS_TEST_PROGRAM: &str = include_str!("../tests/mike_stress_test/input.kcl");
 const LSYSTEM_PROGRAM: &str = include_str!("../../tests/executor/inputs/lsystem.kcl");

src/wasm-lib/kcl/benches/lsp_semantic_tokens_benchmark_criterion.rs

@@ -62,6 +62,6 @@ const KITT_PROGRAM: &str = include_str!("../../tests/executor/inputs/kittycad_sv
 const PIPES_PROGRAM: &str = include_str!("../../tests/executor/inputs/pipes_on_pipes.kcl");
 const CUBE_PROGRAM: &str = include_str!("../../tests/executor/inputs/cube.kcl");
 const MATH_PROGRAM: &str = include_str!("../../tests/executor/inputs/math.kcl");
-const MIKE_STRESS_TEST_PROGRAM: &str = include_str!("../../tests/executor/inputs/mike_stress_test.kcl");
+const MIKE_STRESS_TEST_PROGRAM: &str = include_str!("../tests/mike_stress_test/input.kcl");
 const GLOBAL_TAGS_FILE: &str = include_str!("../../tests/executor/inputs/global-tags.kcl");
 const LSYSTEM_PROGRAM: &str = include_str!("../../tests/executor/inputs/lsystem.kcl");

src/wasm-lib/kcl/common.kcl

@@ -0,0 +1,20 @@
+// This file is used by the import docs.
+
+export fn width = () => {
+  return 10
+}
+
+export fn height = () => {
+  return 10
+}
+
+export fn buildSketch = (plane, offset) => {
+  w = width()
+  h = height()
+  return startSketchOn(plane)
+  |> startProfileAt(offset, %)
+  |> line([w, 0], %)
+  |> line([0, h], %)
+  |> line([-w, 0], %)
+  |> close(%)
+}

src/wasm-lib/kcl/src/docs/templates/index.hbs

@@ -7,6 +7,7 @@ layout: manual
 ## Table of Contents
 
 * [Types](kcl/types)
+* [Modules](kcl/modules)
 * [Known Issues](kcl/KNOWN-ISSUES)
 {{#each functions}}
 * [`{{name}}`](kcl/{{name}})

src/wasm-lib/kcl/src/executor.rs

@@ -801,6 +801,17 @@ impl Plane {
             },
         }
     }
+
+    /// The standard planes are XY, YZ and XZ (in both positive and negative)
+    pub fn is_standard(&self) -> bool {
+        !self.is_custom()
+    }
+
+    /// The standard planes are XY, YZ and XZ (in both positive and negative)
+    /// Custom planes are any other plane that the user might specify.
+    pub fn is_custom(&self) -> bool {
+        matches!(self.value, PlaneType::Custom)
+    }
 }
 
 #[derive(Debug, Default, Clone, Deserialize, Serialize, PartialEq, ts_rs::TS, JsonSchema)]
@@ -1049,6 +1060,14 @@ impl KclValue {
         }
     }
 
+    pub fn as_plane(&self) -> Option<&Plane> {
+        if let KclValue::Plane(value) = &self {
+            Some(value)
+        } else {
+            None
+        }
+    }
+
     pub fn as_solid(&self) -> Option<&Solid> {
         if let KclValue::Solid(value) = &self {
             Some(value)
@@ -3033,14 +3052,14 @@ for var in [[3, 6, 10, [0,0]], [1.5, 3, 5, [-10,-10]]] {
 
     #[tokio::test(flavor = "multi_thread")]
     async fn test_get_member_of_array_with_function() {
-        let ast = r#"fn box = (array) => {
+        let ast = r#"fn box = (arr) => {
  let myBox =startSketchOn('XY')
-    |> startProfileAt(array[0], %)
-    |> line([0, array[1]], %)
-    |> line([array[2], 0], %)
-    |> line([0, -array[1]], %)
+    |> startProfileAt(arr[0], %)
+    |> line([0, arr[1]], %)
+    |> line([arr[2], 0], %)
+    |> line([0, -arr[1]], %)
     |> close(%)
-    |> extrude(array[3], %)
+    |> extrude(arr[3], %)
 
   return myBox
 }

src/wasm-lib/kcl/src/lsp/tests.rs

@@ -2,7 +2,7 @@ use std::collections::BTreeMap;
 
 use pretty_assertions::assert_eq;
 use tower_lsp::{
-    lsp_types::{SemanticTokenModifier, SemanticTokenType},
+    lsp_types::{Diagnostic, SemanticTokenModifier, SemanticTokenType},
     LanguageServer,
 };
 
@@ -2369,7 +2369,14 @@ async fn kcl_test_kcl_lsp_diagnostics_on_execution_error() {
 
     // Get the diagnostics.
     let diagnostics = server.diagnostics_map.get("file:///test.kcl");
-    assert!(diagnostics.is_none());
+    if let Some(diagnostics) = diagnostics {
+        let ds: Vec<Diagnostic> = diagnostics.to_owned();
+        eprintln!("Expected no diagnostics, but found some.");
+        for d in ds {
+            eprintln!("{:?}: {}", d.severity, d.message);
+        }
+        panic!();
+    }
 }
 
 #[tokio::test(flavor = "multi_thread")]

src/wasm-lib/kcl/src/parser/parser_impl.rs

@@ -2040,11 +2040,39 @@ fn fn_call(i: TokenSlice) -> PResult<Node<CallExpression>> {
 
 #[cfg(test)]
 mod tests {
+    use itertools::Itertools;
     use pretty_assertions::assert_eq;
 
     use super::*;
     use crate::ast::types::{BodyItem, Expr, ModuleId, VariableKind};
 
+    fn assert_reserved(word: &str) {
+        // Try to use it as a variable name.
+        let code = format!(r#"{} = 0"#, word);
+        let result = crate::parser::top_level_parse(code.as_str());
+        let err = result.unwrap_err();
+        // Which token causes the error may change.  In "return = 0", for
+        // example, "return" is the problem.
+        assert!(
+            err.message().starts_with("Unexpected token: ")
+                || err
+                    .message()
+                    .starts_with("Cannot assign a variable to a reserved keyword: "),
+            "Error message is: {}",
+            err.message(),
+        );
+    }
+
+    #[test]
+    fn reserved_words() {
+        // Since these are stored in a set, we sort to make the tests
+        // deterministic.
+        for word in crate::token::RESERVED_WORDS.keys().sorted() {
+            assert_reserved(word);
+        }
+        assert_reserved("import");
+    }
+
     #[test]
     fn parse_args() {
         for (i, (test, expected_len)) in [("someVar", 1), ("5, 3", 2), (r#""a""#, 1)].into_iter().enumerate() {

src/wasm-lib/kcl/src/std/args.rs

@@ -794,6 +794,45 @@ impl<'a> FromKclValue<'a> for crate::std::planes::StandardPlane {
     }
 }
 
+impl<'a> FromKclValue<'a> for crate::executor::Plane {
+    fn from_kcl_val(arg: &'a KclValue) -> Option<Self> {
+        if let Some(plane) = arg.as_plane() {
+            return Some(plane.clone());
+        }
+
+        let obj = arg.as_object()?;
+        let_field_of!(obj, id);
+        let_field_of!(obj, value);
+        let_field_of!(obj, origin);
+        let_field_of!(obj, x_axis "xAxis");
+        let_field_of!(obj, y_axis "yAxis");
+        let_field_of!(obj, z_axis "zAxis");
+        let_field_of!(obj, meta "__meta");
+        Some(Self {
+            id,
+            value,
+            origin,
+            x_axis,
+            y_axis,
+            z_axis,
+            meta,
+        })
+    }
+}
+
+impl<'a> FromKclValue<'a> for crate::executor::PlaneType {
+    fn from_kcl_val(arg: &'a KclValue) -> Option<Self> {
+        let plane_type = match arg.as_str()? {
+            "XY" | "xy" => Self::XY,
+            "XZ" | "xz" => Self::XZ,
+            "YZ" | "yz" => Self::YZ,
+            "Custom" => Self::Custom,
+            _ => return None,
+        };
+        Some(plane_type)
+    }
+}
+
 impl<'a> FromKclValue<'a> for kittycad_modeling_cmds::units::UnitLength {
     fn from_kcl_val(arg: &'a KclValue) -> Option<Self> {
         let s = arg.as_str()?;
@@ -1032,6 +1071,15 @@ impl<'a> FromKclValue<'a> for super::sketch::ArcData {
     }
 }
 
+impl<'a> FromKclValue<'a> for super::sketch::ArcToData {
+    fn from_kcl_val(arg: &'a KclValue) -> Option<Self> {
+        let obj = arg.as_object()?;
+        let_field_of!(obj, end);
+        let_field_of!(obj, interior);
+        Some(Self { end, interior })
+    }
+}
+
 impl<'a> FromKclValue<'a> for super::revolve::RevolveData {
     fn from_kcl_val(arg: &'a KclValue) -> Option<Self> {
         let obj = arg.as_object()?;
@@ -1264,11 +1312,15 @@ impl<'a> FromKclValue<'a> for crate::executor::Solid {
 
 impl<'a> FromKclValue<'a> for super::sketch::SketchData {
     fn from_kcl_val(arg: &'a KclValue) -> Option<Self> {
-        let case1 = super::sketch::PlaneData::from_kcl_val;
-        let case2 = crate::executor::Solid::from_kcl_val;
+        // Order is critical since PlaneData is a subset of Plane.
+        let case1 = crate::executor::Plane::from_kcl_val;
+        let case2 = super::sketch::PlaneData::from_kcl_val;
+        let case3 = crate::executor::Solid::from_kcl_val;
         case1(arg)
+            .map(Box::new)
             .map(Self::Plane)
-            .or_else(|| case2(arg).map(Box::new).map(Self::Solid))
+            .or_else(|| case2(arg).map(Self::PlaneOrientation))
+            .or_else(|| case3(arg).map(Box::new).map(Self::Solid))
     }
 }
 

src/wasm-lib/kcl/src/std/array.rs

@@ -107,14 +107,14 @@ pub async fn reduce(exec_state: &mut ExecState, args: Args) -> Result<KclValue,
 ///
 /// // This function adds an array of numbers.
 /// // It uses the `reduce` function, to call the `add` function on every
-/// // element of the `array` parameter. The starting value is 0.
-/// fn sum = (array) => { return reduce(array, 0, add) }
+/// // element of the `arr` parameter. The starting value is 0.
+/// fn sum = (arr) => { return reduce(arr, 0, add) }
 ///
 /// /*
 /// The above is basically like this pseudo-code:
-/// fn sum(array):
+/// fn sum(arr):
 ///     let sumSoFar = 0
-///     for i in array:
+///     for i in arr:
 ///         sumSoFar = add(sumSoFar, i)
 ///     return sumSoFar
 /// */
@@ -127,8 +127,8 @@ pub async fn reduce(exec_state: &mut ExecState, args: Args) -> Result<KclValue,
 /// // This example works just like the previous example above, but it uses
 /// // an anonymous `add` function as its parameter, instead of declaring a
 /// // named function outside.
-/// array = [1, 2, 3]
-/// sum = reduce(array, 0, (i, result_so_far) => { return i + result_so_far })
+/// arr = [1, 2, 3]
+/// sum = reduce(arr, 0, (i, result_so_far) => { return i + result_so_far })
 ///
 /// // We use `assertEqual` to check that our `sum` function gives the
 /// // expected result. It's good to check your work!

src/wasm-lib/kcl/src/std/import.rs

@@ -144,6 +144,9 @@ pub async fn import(exec_state: &mut ExecState, args: Args) -> Result<KclValue,
 /// Note: The import command currently only works when using the native
 /// Modeling App.
 ///
+/// For importing KCL functions using the `import` statement, see the docs on
+/// [KCL modules](/docs/kcl/modules).
+///
 /// ```no_run
 /// const model = import("tests/inputs/cube.obj")
 /// ```
@@ -163,6 +166,15 @@ pub async fn import(exec_state: &mut ExecState, args: Args) -> Result<KclValue,
 /// ```no_run
 /// const model = import("tests/inputs/cube.step")
 /// ```
+///
+/// ```no_run
+/// import height, buildSketch from 'common.kcl'
+///
+/// plane = 'XZ'
+/// margin = 2
+/// s1 = buildSketch(plane, [0, 0])
+/// s2 = buildSketch(plane, [0, height() + margin])
+/// ```
 #[stdlib {
     name = "import",
     tags = [],

src/wasm-lib/kcl/src/std/mod.rs

@@ -91,6 +91,7 @@ lazy_static! {
         Box::new(crate::std::sketch::ProfileStart),
         Box::new(crate::std::sketch::Close),
         Box::new(crate::std::sketch::Arc),
+        Box::new(crate::std::sketch::ArcTo),
         Box::new(crate::std::sketch::TangentialArc),
         Box::new(crate::std::sketch::TangentialArcTo),
         Box::new(crate::std::sketch::TangentialArcToRelative),

src/wasm-lib/kcl/src/std/planes.rs

@@ -1,17 +1,20 @@
 //! Standard library plane helpers.
 
 use derive_docs::stdlib;
+use kcmc::{each_cmd as mcmd, length_unit::LengthUnit, shared::Color, ModelingCmd};
+use kittycad_modeling_cmds as kcmc;
 use schemars::JsonSchema;
 use serde::{Deserialize, Serialize};
 
 use crate::{
     errors::KclError,
-    executor::{ExecState, KclValue, Plane},
+    executor::{ExecState, KclValue, Plane, PlaneType},
     std::{sketch::PlaneData, Args},
 };
 
 /// One of the standard planes.
-#[derive(Debug, Clone, Copy, Deserialize, Serialize, PartialEq, JsonSchema)]
+#[derive(Debug, Clone, Copy, Deserialize, Serialize, PartialEq, ts_rs::TS, JsonSchema)]
+#[ts(export)]
 #[serde(rename_all = "camelCase")]
 pub enum StandardPlane {
     /// The XY plane.
@@ -50,8 +53,8 @@ impl From<StandardPlane> for PlaneData {
 /// Offset a plane by a distance along its normal.
 pub async fn offset_plane(exec_state: &mut ExecState, args: Args) -> Result<KclValue, KclError> {
     let (std_plane, offset): (StandardPlane, f64) = args.get_data_and_float()?;
-    let plane_data = inner_offset_plane(std_plane, offset, exec_state).await?;
-    let plane = Plane::from_plane_data(plane_data, exec_state);
+    let plane = inner_offset_plane(std_plane, offset, exec_state).await?;
+    make_offset_plane_in_engine(&plane, exec_state, &args).await?;
     Ok(KclValue::Plane(Box::new(plane)))
 }
 
@@ -144,11 +147,14 @@ async fn inner_offset_plane(
     std_plane: StandardPlane,
     offset: f64,
     exec_state: &mut ExecState,
-) -> Result<PlaneData, KclError> {
+) -> Result<Plane, KclError> {
     // Convert to the plane type.
     let plane_data: PlaneData = std_plane.into();
     // Convert to a plane.
     let mut plane = Plane::from_plane_data(plane_data, exec_state);
+    // Though offset planes are derived from standard planes, they are not
+    // standard planes themselves.
+    plane.value = PlaneType::Custom;
 
     match std_plane {
         StandardPlane::XY => {
@@ -171,10 +177,44 @@ async fn inner_offset_plane(
         }
     }
 
-    Ok(PlaneData::Plane {
-        origin: Box::new(plane.origin),
-        x_axis: Box::new(plane.x_axis),
-        y_axis: Box::new(plane.y_axis),
-        z_axis: Box::new(plane.z_axis),
-    })
+    Ok(plane)
+}
+
+// Engine-side effectful creation of an actual plane object.
+// offset planes are shown by default, and hidden by default if they
+// are used as a sketch plane. That hiding command is sent within inner_start_profile_at
+async fn make_offset_plane_in_engine(plane: &Plane, exec_state: &mut ExecState, args: &Args) -> Result<(), KclError> {
+    // Create new default planes.
+    let default_size = 100.0;
+    let color = Color {
+        r: 0.6,
+        g: 0.6,
+        b: 0.6,
+        a: 0.3,
+    };
+
+    args.batch_modeling_cmd(
+        plane.id,
+        ModelingCmd::from(mcmd::MakePlane {
+            clobber: false,
+            origin: plane.origin.into(),
+            size: LengthUnit(default_size),
+            x_axis: plane.x_axis.into(),
+            y_axis: plane.y_axis.into(),
+            hide: Some(false),
+        }),
+    )
+    .await?;
+
+    // Set the color.
+    args.batch_modeling_cmd(
+        exec_state.id_generator.next_uuid(),
+        ModelingCmd::from(mcmd::PlaneSetColor {
+            color,
+            plane_id: plane.id,
+        }),
+    )
+    .await?;
+
+    Ok(())
 }

src/wasm-lib/kcl/src/std/sketch.rs

@@ -894,7 +894,7 @@ pub async fn start_sketch_at(exec_state: &mut ExecState, args: Args) -> Result<K
 async fn inner_start_sketch_at(data: [f64; 2], exec_state: &mut ExecState, args: Args) -> Result<Sketch, KclError> {
     // Let's assume it's the XY plane for now, this is just for backwards compatibility.
     let xy_plane = PlaneData::XY;
-    let sketch_surface = inner_start_sketch_on(SketchData::Plane(xy_plane), None, exec_state, &args).await?;
+    let sketch_surface = inner_start_sketch_on(SketchData::PlaneOrientation(xy_plane), None, exec_state, &args).await?;
     let sketch = inner_start_profile_at(data, sketch_surface, None, exec_state, args).await?;
     Ok(sketch)
 }
@@ -905,11 +905,12 @@ async fn inner_start_sketch_at(data: [f64; 2], exec_state: &mut ExecState, args:
 #[ts(export)]
 #[serde(rename_all = "camelCase", untagged)]
 pub enum SketchData {
-    Plane(PlaneData),
+    PlaneOrientation(PlaneData),
+    Plane(Box<Plane>),
     Solid(Box<Solid>),
 }
 
-/// Data for a plane.
+/// Orientation data that can be used to construct a plane, not a plane in itself.
 #[derive(Debug, Clone, Deserialize, Serialize, PartialEq, ts_rs::TS, JsonSchema)]
 #[ts(export)]
 #[serde(rename_all = "camelCase")]
@@ -1069,10 +1070,11 @@ async fn inner_start_sketch_on(
     args: &Args,
 ) -> Result<SketchSurface, KclError> {
     match data {
-        SketchData::Plane(plane_data) => {
-            let plane = start_sketch_on_plane(plane_data, exec_state, args).await?;
+        SketchData::PlaneOrientation(plane_data) => {
+            let plane = make_sketch_plane_from_orientation(plane_data, exec_state, args).await?;
             Ok(SketchSurface::Plane(plane))
         }
+        SketchData::Plane(plane) => Ok(SketchSurface::Plane(plane)),
         SketchData::Solid(solid) => {
             let Some(tag) = tag else {
                 return Err(KclError::Type(KclErrorDetails {
@@ -1106,7 +1108,7 @@ async fn start_sketch_on_face(
     }))
 }
 
-async fn start_sketch_on_plane(
+async fn make_sketch_plane_from_orientation(
     data: PlaneData,
     exec_state: &mut ExecState,
     args: &Args,
@@ -1122,10 +1124,10 @@ async fn start_sketch_on_plane(
 
     plane.id = match data {
         PlaneData::XY => default_planes.xy,
-        PlaneData::XZ => default_planes.xz,
-        PlaneData::YZ => default_planes.yz,
         PlaneData::NegXY => default_planes.neg_xy,
+        PlaneData::XZ => default_planes.xz,
         PlaneData::NegXZ => default_planes.neg_xz,
+        PlaneData::YZ => default_planes.yz,
         PlaneData::NegYZ => default_planes.neg_yz,
         PlaneData::Plane {
             origin,
@@ -1210,12 +1212,27 @@ pub(crate) async fn inner_start_profile_at(
     exec_state: &mut ExecState,
     args: Args,
 ) -> Result<Sketch, KclError> {
-    if let SketchSurface::Face(face) = &sketch_surface {
+    match &sketch_surface {
+        SketchSurface::Face(face) => {
             // Flush the batch for our fillets/chamfers if there are any.
             // If we do not do these for sketch on face, things will fail with face does not exist.
             args.flush_batch_for_solid_set(exec_state, face.solid.clone().into())
                 .await?;
         }
+        SketchSurface::Plane(plane) if !plane.is_standard() => {
+            // Hide whatever plane we are sketching on.
+            // This is especially helpful for offset planes, which would be visible otherwise.
+            args.batch_end_cmd(
+                exec_state.id_generator.next_uuid(),
+                ModelingCmd::from(mcmd::ObjectVisible {
+                    object_id: plane.id,
+                    hidden: true,
+                }),
+            )
+            .await?;
+        }
+        _ => {}
+    }
 
     // Enter sketch mode on the surface.
     // We call this here so you can reuse the sketch surface for multiple sketches.
@@ -1469,6 +1486,17 @@ pub enum ArcData {
     },
 }
 
+/// Data to draw a three point arc (arcTo).
+#[derive(Debug, Clone, Deserialize, Serialize, PartialEq, ts_rs::TS, JsonSchema)]
+#[ts(export)]
+#[serde(rename_all = "camelCase")]
+pub struct ArcToData {
+    /// End point of the arc. A point in 3D space
+    pub end: [f64; 2],
+    /// Interior point of the arc. A point in 3D space
+    pub interior: [f64; 2],
+}
+
 /// Draw an arc.
 pub async fn arc(exec_state: &mut ExecState, args: Args) -> Result<KclValue, KclError> {
     let (data, sketch, tag): (ArcData, Sketch, Option<TagNode>) = args.get_data_and_sketch_and_tag()?;
@@ -1499,7 +1527,7 @@ pub async fn arc(exec_state: &mut ExecState, args: Args) -> Result<KclValue, Kcl
 ///        radius: 16
 ///      }, %)
 ///   |> close(%)
-// const example = extrude(10, exampleSketch)
+/// const example = extrude(10, exampleSketch)
 /// ```
 #[stdlib {
     name = "arc",
@@ -1578,6 +1606,104 @@ pub(crate) async fn inner_arc(
     Ok(new_sketch)
 }
 
+/// Draw a three point arc.
+pub async fn arc_to(exec_state: &mut ExecState, args: Args) -> Result<KclValue, KclError> {
+    let (data, sketch, tag): (ArcToData, Sketch, Option<TagNode>) = args.get_data_and_sketch_and_tag()?;
+
+    let new_sketch = inner_arc_to(data, sketch, tag, exec_state, args).await?;
+    Ok(KclValue::Sketch {
+        value: Box::new(new_sketch),
+    })
+}
+
+/// Draw a 3 point arc.
+///
+/// The arc is constructed such that the start point is the current position of the sketch and two more points defined as the end and interior point.
+/// The interior point is placed between the start point and end point. The radius of the arc will be controlled by how far the interior point is placed from
+/// the start and end.
+///
+/// ```no_run
+/// const exampleSketch = startSketchOn('XZ')
+///   |> startProfileAt([0, 0], %)
+///   |> arcTo({
+///         end: [10,0],
+///         interior: [5,5]
+///      }, %)
+///   |> close(%)
+/// const example = extrude(10, exampleSketch)
+/// ```
+#[stdlib {
+    name = "arcTo",
+}]
+pub(crate) async fn inner_arc_to(
+    data: ArcToData,
+    sketch: Sketch,
+    tag: Option<TagNode>,
+    exec_state: &mut ExecState,
+    args: Args,
+) -> Result<Sketch, KclError> {
+    let from: Point2d = sketch.current_pen_position()?;
+    let id = exec_state.id_generator.next_uuid();
+
+    // The start point is taken from the path you are extending.
+    args.batch_modeling_cmd(
+        id,
+        ModelingCmd::from(mcmd::ExtendPath {
+            path: sketch.id.into(),
+            segment: PathSegment::ArcTo {
+                end: kcmc::shared::Point3d {
+                    x: LengthUnit(data.end[0]),
+                    y: LengthUnit(data.end[1]),
+                    z: LengthUnit(0.0),
+                },
+                interior: kcmc::shared::Point3d {
+                    x: LengthUnit(data.interior[0]),
+                    y: LengthUnit(data.interior[1]),
+                    z: LengthUnit(0.0),
+                },
+                relative: false,
+            },
+        }),
+    )
+    .await?;
+
+    let start = [from.x, from.y];
+    let interior = [data.interior[0], data.interior[1]];
+    let end = [data.end[0], data.end[1]];
+
+    // compute the center of the circle since we do not have the value returned from the engine
+    let center = calculate_circle_center(start, interior, end);
+
+    // compute the radius since we do not have the value returned from the engine
+    // Pick any of the 3 points since they all lie along the circle
+    let sum_of_square_differences =
+        (center[0] - start[0] * center[0] - start[0]) + (center[1] - start[1] * center[1] - start[1]);
+    let radius = sum_of_square_differences.sqrt();
+
+    let current_path = Path::Arc {
+        base: BasePath {
+            from: from.into(),
+            to: data.end,
+            tag: tag.clone(),
+            geo_meta: GeoMeta {
+                id,
+                metadata: args.source_range.into(),
+            },
+        },
+        center,
+        radius,
+    };
+
+    let mut new_sketch = sketch.clone();
+    if let Some(tag) = &tag {
+        new_sketch.add_tag(tag, &current_path);
+    }
+
+    new_sketch.paths.push(current_path);
+
+    Ok(new_sketch)
+}
+
 /// Data to draw a tangential arc.
 #[derive(Debug, Clone, Deserialize, Serialize, PartialEq, JsonSchema, ts_rs::TS)]
 #[ts(export)]
@@ -1897,6 +2023,42 @@ async fn inner_tangential_arc_to_relative(
     Ok(new_sketch)
 }
 
+// Calculate the center of 3 points
+// To calculate the center of the 3 point circle 2 perpendicular lines are created
+// These perpendicular lines will intersect at the center of the circle.
+fn calculate_circle_center(p1: [f64; 2], p2: [f64; 2], p3: [f64; 2]) -> [f64; 2] {
+    // y2 - y1
+    let y_2_1 = p2[1] - p1[1];
+    // y3 - y2
+    let y_3_2 = p3[1] - p2[1];
+    // x2 - x1
+    let x_2_1 = p2[0] - p1[0];
+    // x3 - x2
+    let x_3_2 = p3[0] - p2[0];
+
+    // Slope of two perpendicular lines
+    let slope_a = y_2_1 / x_2_1;
+    let slope_b = y_3_2 / x_3_2;
+
+    // Values for line intersection
+    // y1 - y3
+    let y_1_3 = p1[1] - p3[1];
+    // x1 + x2
+    let x_1_2 = p1[0] + p2[0];
+    // x2 + x3
+    let x_2_3 = p2[0] + p3[0];
+    // y1 + y2
+    let y_1_2 = p1[1] + p2[1];
+
+    // Solve for the intersection of these two lines
+    let numerator = (slope_a * slope_b * y_1_3) + (slope_b * x_1_2) - (slope_a * x_2_3);
+    let x = numerator / (2.0 * (slope_b - slope_a));
+
+    let y = ((-1.0 / slope_a) * (x - (x_1_2 / 2.0))) + (y_1_2 / 2.0);
+
+    [x, y]
+}
+
 /// Data to draw a bezier curve.
 #[derive(Debug, Clone, Deserialize, Serialize, PartialEq, ts_rs::TS, JsonSchema)]
 #[ts(export)]
@@ -2073,7 +2235,7 @@ mod tests {
 
     use pretty_assertions::assert_eq;
 
-    use crate::{executor::TagIdentifier, std::sketch::PlaneData};
+    use crate::{executor::TagIdentifier, std::sketch::calculate_circle_center, std::sketch::PlaneData};
 
     #[test]
     fn test_deserialize_plane_data() {
@@ -2144,4 +2306,11 @@ mod tests {
             crate::std::sketch::FaceTag::StartOrEnd(crate::std::sketch::StartOrEnd::Start)
         );
     }
+
+    #[test]
+    fn test_circle_center() {
+        let actual = calculate_circle_center([0.0, 0.0], [5.0, 5.0], [10.0, 0.0]);
+        assert_eq!(actual[0], 5.0);
+        assert_eq!(actual[1], 0.0);
+    }
 }

src/wasm-lib/kcl/src/token.rs

@@ -17,6 +17,8 @@ mod tokeniser;
 
 // Re-export
 pub use tokeniser::Input;
+#[cfg(test)]
+pub(crate) use tokeniser::RESERVED_WORDS;
 
 /// The types of tokens.
 #[derive(Debug, PartialEq, Eq, Copy, Clone, Deserialize, Serialize, ts_rs::TS, JsonSchema, FromStr, Display)]

src/wasm-lib/kcl/src/token/tokeniser.rs

@@ -1,6 +1,8 @@
+use fnv::FnvHashMap;
+use lazy_static::lazy_static;
 use winnow::{
     ascii::{digit1, multispace1},
-    combinator::{alt, opt, peek, preceded, repeat, terminated},
+    combinator::{alt, opt, peek, preceded, repeat},
     error::{ContextError, ParseError},
     prelude::*,
     stream::{Location, Stream},
@@ -13,6 +15,52 @@ use crate::{
     token::{Token, TokenType},
 };
 
+lazy_static! {
+    pub(crate) static ref RESERVED_WORDS: FnvHashMap<&'static str, TokenType> = {
+        let mut set = FnvHashMap::default();
+        set.insert("if", TokenType::Keyword);
+        set.insert("else", TokenType::Keyword);
+        set.insert("for", TokenType::Keyword);
+        set.insert("while", TokenType::Keyword);
+        set.insert("return", TokenType::Keyword);
+        set.insert("break", TokenType::Keyword);
+        set.insert("continue", TokenType::Keyword);
+        set.insert("fn", TokenType::Keyword);
+        set.insert("let", TokenType::Keyword);
+        set.insert("mut", TokenType::Keyword);
+        set.insert("as", TokenType::Keyword);
+        set.insert("loop", TokenType::Keyword);
+        set.insert("true", TokenType::Keyword);
+        set.insert("false", TokenType::Keyword);
+        set.insert("nil", TokenType::Keyword);
+        // This isn't a type because brackets are used for the type.
+        set.insert("array", TokenType::Keyword);
+        set.insert("and", TokenType::Keyword);
+        set.insert("or", TokenType::Keyword);
+        set.insert("not", TokenType::Keyword);
+        set.insert("var", TokenType::Keyword);
+        set.insert("const", TokenType::Keyword);
+        // "import" is special because of import().
+        set.insert("export", TokenType::Keyword);
+        set.insert("interface", TokenType::Keyword);
+        set.insert("new", TokenType::Keyword);
+        set.insert("self", TokenType::Keyword);
+        set.insert("record", TokenType::Keyword);
+        set.insert("struct", TokenType::Keyword);
+        set.insert("object", TokenType::Keyword);
+        set.insert("_", TokenType::Keyword);
+
+        set.insert("string", TokenType::Type);
+        set.insert("number", TokenType::Type);
+        set.insert("bool", TokenType::Type);
+        set.insert("sketch", TokenType::Type);
+        set.insert("sketch_surface", TokenType::Type);
+        set.insert("solid", TokenType::Type);
+
+        set
+    };
+}
+
 pub fn lexer(i: &str, module_id: ModuleId) -> Result<Vec<Token>, ParseError<Input<'_>, ContextError>> {
     let state = State::new(module_id);
     let input = Input {
@@ -50,7 +98,7 @@ pub fn token(i: &mut Input<'_>) -> PResult<Token> {
         '$' => dollar,
         '!' => alt((operator, bang)),
         ' ' | '\t' | '\n' => whitespace,
-        _ => alt((operator, keyword,type_, word))
+        _ => alt((operator, keyword_type_or_word))
     }
     .parse_next(i)
     {
@@ -287,47 +335,16 @@ fn import_keyword(i: &mut Input<'_>) -> PResult<Token> {
     ))
 }
 
-fn unambiguous_keywords(i: &mut Input<'_>) -> PResult<Token> {
-    // These are the keywords themselves.
-    let keyword_candidates = alt((
-        "if", "else", "for", "while", "return", "break", "continue", "fn", "let", "mut", "loop", "true", "false",
-        "nil", "and", "or", "not", "var", "const", "export",
-    ));
-    // Look ahead. If any of these characters follow the keyword, then it's not a keyword, it's just
-    // the start of a normal word.
-    let keyword = terminated(
-        keyword_candidates,
-        peek(none_of(('a'..='z', 'A'..='Z', '-', '_', '0'..='9'))),
-    );
-    let (value, range) = keyword.with_span().parse_next(i)?;
-    Ok(Token::from_range(
-        range,
-        i.state.module_id,
-        TokenType::Keyword,
-        value.to_owned(),
-    ))
+fn unambiguous_keyword_type_or_word(i: &mut Input<'_>) -> PResult<Token> {
+    let mut w = word.parse_next(i)?;
+    if let Some(token_type) = RESERVED_WORDS.get(w.value.as_str()) {
+        w.token_type = *token_type;
+    }
+    Ok(w)
 }
 
-fn keyword(i: &mut Input<'_>) -> PResult<Token> {
-    alt((import_keyword, unambiguous_keywords)).parse_next(i)
-}
-
-fn type_(i: &mut Input<'_>) -> PResult<Token> {
-    // These are the types themselves.
-    let type_candidates = alt(("string", "number", "bool", "sketch", "sketch_surface", "solid"));
-    // Look ahead. If any of these characters follow the type, then it's not a type, it's just
-    // the start of a normal word.
-    let type_ = terminated(
-        type_candidates,
-        peek(none_of(('a'..='z', 'A'..='Z', '-', '_', '0'..='9'))),
-    );
-    let (value, range) = type_.with_span().parse_next(i)?;
-    Ok(Token::from_range(
-        range,
-        i.state.module_id,
-        TokenType::Type,
-        value.to_owned(),
-    ))
+fn keyword_type_or_word(i: &mut Input<'_>) -> PResult<Token> {
+    alt((import_keyword, unambiguous_keyword_type_or_word)).parse_next(i)
 }
 
 #[cfg(test)]

src/wasm-lib/kcl/tests/array_elem_push_fail/ast.snap

@@ -0,0 +1,157 @@
+---
+source: kcl/src/simulation_tests.rs
+description: Result of parsing array_elem_push_fail.kcl
+snapshot_kind: text
+---
+{
+  "Ok": {
+    "body": [
+      {
+        "declarations": [
+          {
+            "end": 15,
+            "id": {
+              "end": 3,
+              "name": "arr",
+              "start": 0,
+              "type": "Identifier"
+            },
+            "init": {
+              "elements": [
+                {
+                  "end": 8,
+                  "raw": "1",
+                  "start": 7,
+                  "type": "Literal",
+                  "type": "Literal",
+                  "value": 1
+                },
+                {
+                  "end": 11,
+                  "raw": "2",
+                  "start": 10,
+                  "type": "Literal",
+                  "type": "Literal",
+                  "value": 2
+                },
+                {
+                  "end": 14,
+                  "raw": "3",
+                  "start": 13,
+                  "type": "Literal",
+                  "type": "Literal",
+                  "value": 3
+                }
+              ],
+              "end": 15,
+              "start": 6,
+              "type": "ArrayExpression",
+              "type": "ArrayExpression"
+            },
+            "start": 0,
+            "type": "VariableDeclarator"
+          }
+        ],
+        "end": 15,
+        "kind": "const",
+        "start": 0,
+        "type": "VariableDeclaration",
+        "type": "VariableDeclaration"
+      },
+      {
+        "declarations": [
+          {
+            "end": 40,
+            "id": {
+              "end": 25,
+              "name": "pushedArr",
+              "start": 16,
+              "type": "Identifier"
+            },
+            "init": {
+              "arguments": [
+                {
+                  "end": 36,
+                  "name": "arr",
+                  "start": 33,
+                  "type": "Identifier",
+                  "type": "Identifier"
+                },
+                {
+                  "end": 39,
+                  "raw": "4",
+                  "start": 38,
+                  "type": "Literal",
+                  "type": "Literal",
+                  "value": 4
+                }
+              ],
+              "callee": {
+                "end": 32,
+                "name": "push",
+                "start": 28,
+                "type": "Identifier"
+              },
+              "end": 40,
+              "optional": false,
+              "start": 28,
+              "type": "CallExpression",
+              "type": "CallExpression"
+            },
+            "start": 16,
+            "type": "VariableDeclarator"
+          }
+        ],
+        "end": 40,
+        "kind": "const",
+        "start": 16,
+        "type": "VariableDeclaration",
+        "type": "VariableDeclaration"
+      },
+      {
+        "declarations": [
+          {
+            "end": 54,
+            "id": {
+              "end": 45,
+              "name": "fail",
+              "start": 41,
+              "type": "Identifier"
+            },
+            "init": {
+              "computed": false,
+              "end": 54,
+              "object": {
+                "end": 51,
+                "name": "arr",
+                "start": 48,
+                "type": "Identifier",
+                "type": "Identifier"
+              },
+              "property": {
+                "end": 53,
+                "raw": "3",
+                "start": 52,
+                "type": "Literal",
+                "type": "Literal",
+                "value": 3
+              },
+              "start": 48,
+              "type": "MemberExpression",
+              "type": "MemberExpression"
+            },
+            "start": 41,
+            "type": "VariableDeclarator"
+          }
+        ],
+        "end": 54,
+        "kind": "const",
+        "start": 41,
+        "type": "VariableDeclaration",
+        "type": "VariableDeclaration"
+      }
+    ],
+    "end": 55,
+    "start": 0
+  }
+}

src/wasm-lib/kcl/tests/array_elem_push_fail/execution_error.snap

@@ -0,0 +1,6 @@
+---
+source: kcl/src/simulation_tests.rs
+description: Error from executing array_elem_push_fail.kcl
+snapshot_kind: text
+---
+undefined value: KclErrorDetails { source_ranges: [SourceRange([48, 54, 0])], message: "The array doesn't have any item at index 3" }

src/wasm-lib/kcl/tests/array_elem_push_fail/input.kcl

@@ -0,0 +1,3 @@
+arr = [1, 2, 3]
+pushedArr = push(arr, 4)
+fail = arr[3]

src/wasm-lib/kcl/tests/array_elem_push_fail/tokens.snap

@@ -0,0 +1,219 @@
+---
+source: kcl/src/simulation_tests.rs
+description: Result of tokenizing array_elem_push_fail.kcl
+snapshot_kind: text
+---
+{
+  "Ok": [
+    {
+      "type": "word",
+      "start": 0,
+      "end": 3,
+      "value": "arr"
+    },
+    {
+      "type": "whitespace",
+      "start": 3,
+      "end": 4,
+      "value": " "
+    },
+    {
+      "type": "operator",
+      "start": 4,
+      "end": 5,
+      "value": "="
+    },
+    {
+      "type": "whitespace",
+      "start": 5,
+      "end": 6,
+      "value": " "
+    },
+    {
+      "type": "brace",
+      "start": 6,
+      "end": 7,
+      "value": "["
+    },
+    {
+      "type": "number",
+      "start": 7,
+      "end": 8,
+      "value": "1"
+    },
+    {
+      "type": "comma",
+      "start": 8,
+      "end": 9,
+      "value": ","
+    },
+    {
+      "type": "whitespace",
+      "start": 9,
+      "end": 10,
+      "value": " "
+    },
+    {
+      "type": "number",
+      "start": 10,
+      "end": 11,
+      "value": "2"
+    },
+    {
+      "type": "comma",
+      "start": 11,
+      "end": 12,
+      "value": ","
+    },
+    {
+      "type": "whitespace",
+      "start": 12,
+      "end": 13,
+      "value": " "
+    },
+    {
+      "type": "number",
+      "start": 13,
+      "end": 14,
+      "value": "3"
+    },
+    {
+      "type": "brace",
+      "start": 14,
+      "end": 15,
+      "value": "]"
+    },
+    {
+      "type": "whitespace",
+      "start": 15,
+      "end": 16,
+      "value": "\n"
+    },
+    {
+      "type": "word",
+      "start": 16,
+      "end": 25,
+      "value": "pushedArr"
+    },
+    {
+      "type": "whitespace",
+      "start": 25,
+      "end": 26,
+      "value": " "
+    },
+    {
+      "type": "operator",
+      "start": 26,
+      "end": 27,
+      "value": "="
+    },
+    {
+      "type": "whitespace",
+      "start": 27,
+      "end": 28,
+      "value": " "
+    },
+    {
+      "type": "word",
+      "start": 28,
+      "end": 32,
+      "value": "push"
+    },
+    {
+      "type": "brace",
+      "start": 32,
+      "end": 33,
+      "value": "("
+    },
+    {
+      "type": "word",
+      "start": 33,
+      "end": 36,
+      "value": "arr"
+    },
+    {
+      "type": "comma",
+      "start": 36,
+      "end": 37,
+      "value": ","
+    },
+    {
+      "type": "whitespace",
+      "start": 37,
+      "end": 38,
+      "value": " "
+    },
+    {
+      "type": "number",
+      "start": 38,
+      "end": 39,
+      "value": "4"
+    },
+    {
+      "type": "brace",
+      "start": 39,
+      "end": 40,
+      "value": ")"
+    },
+    {
+      "type": "whitespace",
+      "start": 40,
+      "end": 41,
+      "value": "\n"
+    },
+    {
+      "type": "word",
+      "start": 41,
+      "end": 45,
+      "value": "fail"
+    },
+    {
+      "type": "whitespace",
+      "start": 45,
+      "end": 46,
+      "value": " "
+    },
+    {
+      "type": "operator",
+      "start": 46,
+      "end": 47,
+      "value": "="
+    },
+    {
+      "type": "whitespace",
+      "start": 47,
+      "end": 48,
+      "value": " "
+    },
+    {
+      "type": "word",
+      "start": 48,
+      "end": 51,
+      "value": "arr"
+    },
+    {
+      "type": "brace",
+      "start": 51,
+      "end": 52,
+      "value": "["
+    },
+    {
+      "type": "number",
+      "start": 52,
+      "end": 53,
+      "value": "3"
+    },
+    {
+      "type": "brace",
+      "start": 53,
+      "end": 54,
+      "value": "]"
+    },
+    {
+      "type": "whitespace",
+      "start": 54,
+      "end": 55,
+      "value": "\n"
+    }
+  ]
+}

src/wasm-lib/kcl/tests/array_index_oob/ast.snap

@@ -0,0 +1,82 @@
+---
+source: kcl/src/simulation_tests.rs
+description: Result of parsing array_index_oob.kcl
+snapshot_kind: text
+---
+{
+  "Ok": {
+    "body": [
+      {
+        "declarations": [
+          {
+            "end": 8,
+            "id": {
+              "end": 3,
+              "name": "arr",
+              "start": 0,
+              "type": "Identifier"
+            },
+            "init": {
+              "elements": [],
+              "end": 8,
+              "start": 6,
+              "type": "ArrayExpression",
+              "type": "ArrayExpression"
+            },
+            "start": 0,
+            "type": "VariableDeclarator"
+          }
+        ],
+        "end": 8,
+        "kind": "const",
+        "start": 0,
+        "type": "VariableDeclaration",
+        "type": "VariableDeclaration"
+      },
+      {
+        "declarations": [
+          {
+            "end": 19,
+            "id": {
+              "end": 10,
+              "name": "x",
+              "start": 9,
+              "type": "Identifier"
+            },
+            "init": {
+              "computed": false,
+              "end": 19,
+              "object": {
+                "end": 16,
+                "name": "arr",
+                "start": 13,
+                "type": "Identifier",
+                "type": "Identifier"
+              },
+              "property": {
+                "end": 18,
+                "raw": "0",
+                "start": 17,
+                "type": "Literal",
+                "type": "Literal",
+                "value": 0
+              },
+              "start": 13,
+              "type": "MemberExpression",
+              "type": "MemberExpression"
+            },
+            "start": 9,
+            "type": "VariableDeclarator"
+          }
+        ],
+        "end": 19,
+        "kind": "const",
+        "start": 9,
+        "type": "VariableDeclaration",
+        "type": "VariableDeclaration"
+      }
+    ],
+    "end": 20,
+    "start": 0
+  }
+}

src/wasm-lib/kcl/tests/array_index_oob/execution_error.snap

@@ -0,0 +1,6 @@
+---
+source: kcl/src/simulation_tests.rs
+description: Error from executing array_index_oob.kcl
+snapshot_kind: text
+---
+undefined value: KclErrorDetails { source_ranges: [SourceRange([13, 19, 0])], message: "The array doesn't have any item at index 0" }

src/wasm-lib/kcl/tests/array_index_oob/input.kcl

@@ -0,0 +1,2 @@
+arr = []
+x = arr[0]

src/wasm-lib/kcl/tests/array_index_oob/tokens.snap

@@ -0,0 +1,105 @@
+---
+source: kcl/src/simulation_tests.rs
+description: Result of tokenizing array_index_oob.kcl
+snapshot_kind: text
+---
+{
+  "Ok": [
+    {
+      "type": "word",
+      "start": 0,
+      "end": 3,
+      "value": "arr"
+    },
+    {
+      "type": "whitespace",
+      "start": 3,
+      "end": 4,
+      "value": " "
+    },
+    {
+      "type": "operator",
+      "start": 4,
+      "end": 5,
+      "value": "="
+    },
+    {
+      "type": "whitespace",
+      "start": 5,
+      "end": 6,
+      "value": " "
+    },
+    {
+      "type": "brace",
+      "start": 6,
+      "end": 7,
+      "value": "["
+    },
+    {
+      "type": "brace",
+      "start": 7,
+      "end": 8,
+      "value": "]"
+    },
+    {
+      "type": "whitespace",
+      "start": 8,
+      "end": 9,
+      "value": "\n"
+    },
+    {
+      "type": "word",
+      "start": 9,
+      "end": 10,
+      "value": "x"
+    },
+    {
+      "type": "whitespace",
+      "start": 10,
+      "end": 11,
+      "value": " "
+    },
+    {
+      "type": "operator",
+      "start": 11,
+      "end": 12,
+      "value": "="
+    },
+    {
+      "type": "whitespace",
+      "start": 12,
+      "end": 13,
+      "value": " "
+    },
+    {
+      "type": "word",
+      "start": 13,
+      "end": 16,
+      "value": "arr"
+    },
+    {
+      "type": "brace",
+      "start": 16,
+      "end": 17,
+      "value": "["
+    },
+    {
+      "type": "number",
+      "start": 17,
+      "end": 18,
+      "value": "0"
+    },
+    {
+      "type": "brace",
+      "start": 18,
+      "end": 19,
+      "value": "]"
+    },
+    {
+      "type": "whitespace",
+      "start": 19,
+      "end": 20,
+      "value": "\n"
+    }
+  ]
+}

src/wasm-lib/kcl/tests/basic_fillet_cube_close_opposite/ast.snap

@@ -0,0 +1,418 @@
+---
+source: kcl/src/simulation_tests.rs
+description: Result of parsing basic_fillet_cube_close_opposite.kcl
+snapshot_kind: text
+---
+{
+  "Ok": {
+    "body": [
+      {
+        "declarations": [
+          {
+            "end": 277,
+            "id": {
+              "end": 7,
+              "name": "part001",
+              "start": 0,
+              "type": "Identifier"
+            },
+            "init": {
+              "body": [
+                {
+                  "arguments": [
+                    {
+                      "end": 28,
+                      "raw": "'XY'",
+                      "start": 24,
+                      "type": "Literal",
+                      "type": "Literal",
+                      "value": "XY"
+                    }
+                  ],
+                  "callee": {
+                    "end": 23,
+                    "name": "startSketchOn",
+                    "start": 10,
+                    "type": "Identifier"
+                  },
+                  "end": 29,
+                  "optional": false,
+                  "start": 10,
+                  "type": "CallExpression",
+                  "type": "CallExpression"
+                },
+                {
+                  "arguments": [
+                    {
+                      "elements": [
+                        {
+                          "end": 52,
+                          "raw": "0",
+                          "start": 51,
+                          "type": "Literal",
+                          "type": "Literal",
+                          "value": 0
+                        },
+                        {
+                          "end": 55,
+                          "raw": "0",
+                          "start": 54,
+                          "type": "Literal",
+                          "type": "Literal",
+                          "value": 0
+                        }
+                      ],
+                      "end": 56,
+                      "start": 50,
+                      "type": "ArrayExpression",
+                      "type": "ArrayExpression"
+                    },
+                    {
+                      "end": 59,
+                      "start": 58,
+                      "type": "PipeSubstitution",
+                      "type": "PipeSubstitution"
+                    }
+                  ],
+                  "callee": {
+                    "end": 49,
+                    "name": "startProfileAt",
+                    "start": 35,
+                    "type": "Identifier"
+                  },
+                  "end": 60,
+                  "optional": false,
+                  "start": 35,
+                  "type": "CallExpression",
+                  "type": "CallExpression"
+                },
+                {
+                  "arguments": [
+                    {
+                      "elements": [
+                        {
+                          "end": 73,
+                          "raw": "0",
+                          "start": 72,
+                          "type": "Literal",
+                          "type": "Literal",
+                          "value": 0
+                        },
+                        {
+                          "end": 77,
+                          "raw": "10",
+                          "start": 75,
+                          "type": "Literal",
+                          "type": "Literal",
+                          "value": 10
+                        }
+                      ],
+                      "end": 78,
+                      "start": 71,
+                      "type": "ArrayExpression",
+                      "type": "ArrayExpression"
+                    },
+                    {
+                      "end": 81,
+                      "start": 80,
+                      "type": "PipeSubstitution",
+                      "type": "PipeSubstitution"
+                    },
+                    {
+                      "end": 89,
+                      "start": 83,
+                      "type": "TagDeclarator",
+                      "type": "TagDeclarator",
+                      "value": "thing"
+                    }
+                  ],
+                  "callee": {
+                    "end": 70,
+                    "name": "line",
+                    "start": 66,
+                    "type": "Identifier"
+                  },
+                  "end": 90,
+                  "optional": false,
+                  "start": 66,
+                  "type": "CallExpression",
+                  "type": "CallExpression"
+                },
+                {
+                  "arguments": [
+                    {
+                      "elements": [
+                        {
+                          "end": 104,
+                          "raw": "10",
+                          "start": 102,
+                          "type": "Literal",
+                          "type": "Literal",
+                          "value": 10
+                        },
+                        {
+                          "end": 107,
+                          "raw": "0",
+                          "start": 106,
+                          "type": "Literal",
+                          "type": "Literal",
+                          "value": 0
+                        }
+                      ],
+                      "end": 108,
+                      "start": 101,
+                      "type": "ArrayExpression",
+                      "type": "ArrayExpression"
+                    },
+                    {
+                      "end": 111,
+                      "start": 110,
+                      "type": "PipeSubstitution",
+                      "type": "PipeSubstitution"
+                    }
+                  ],
+                  "callee": {
+                    "end": 100,
+                    "name": "line",
+                    "start": 96,
+                    "type": "Identifier"
+                  },
+                  "end": 112,
+                  "optional": false,
+                  "start": 96,
+                  "type": "CallExpression",
+                  "type": "CallExpression"
+                },
+                {
+                  "arguments": [
+                    {
+                      "elements": [
+                        {
+                          "end": 125,
+                          "raw": "0",
+                          "start": 124,
+                          "type": "Literal",
+                          "type": "Literal",
+                          "value": 0
+                        },
+                        {
+                          "argument": {
+                            "end": 130,
+                            "raw": "10",
+                            "start": 128,
+                            "type": "Literal",
+                            "type": "Literal",
+                            "value": 10
+                          },
+                          "end": 130,
+                          "operator": "-",
+                          "start": 127,
+                          "type": "UnaryExpression",
+                          "type": "UnaryExpression"
+                        }
+                      ],
+                      "end": 131,
+                      "start": 123,
+                      "type": "ArrayExpression",
+                      "type": "ArrayExpression"
+                    },
+                    {
+                      "end": 134,
+                      "start": 133,
+                      "type": "PipeSubstitution",
+                      "type": "PipeSubstitution"
+                    },
+                    {
+                      "end": 143,
+                      "start": 136,
+                      "type": "TagDeclarator",
+                      "type": "TagDeclarator",
+                      "value": "thing2"
+                    }
+                  ],
+                  "callee": {
+                    "end": 122,
+                    "name": "line",
+                    "start": 118,
+                    "type": "Identifier"
+                  },
+                  "end": 144,
+                  "optional": false,
+                  "start": 118,
+                  "type": "CallExpression",
+                  "type": "CallExpression"
+                },
+                {
+                  "arguments": [
+                    {
+                      "end": 157,
+                      "start": 156,
+                      "type": "PipeSubstitution",
+                      "type": "PipeSubstitution"
+                    },
+                    {
+                      "end": 166,
+                      "start": 159,
+                      "type": "TagDeclarator",
+                      "type": "TagDeclarator",
+                      "value": "thing3"
+                    }
+                  ],
+                  "callee": {
+                    "end": 155,
+                    "name": "close",
+                    "start": 150,
+                    "type": "Identifier"
+                  },
+                  "end": 167,
+                  "optional": false,
+                  "start": 150,
+                  "type": "CallExpression",
+                  "type": "CallExpression"
+                },
+                {
+                  "arguments": [
+                    {
+                      "end": 183,
+                      "raw": "10",
+                      "start": 181,
+                      "type": "Literal",
+                      "type": "Literal",
+                      "value": 10
+                    },
+                    {
+                      "end": 186,
+                      "start": 185,
+                      "type": "PipeSubstitution",
+                      "type": "PipeSubstitution"
+                    }
+                  ],
+                  "callee": {
+                    "end": 180,
+                    "name": "extrude",
+                    "start": 173,
+                    "type": "Identifier"
+                  },
+                  "end": 187,
+                  "optional": false,
+                  "start": 173,
+                  "type": "CallExpression",
+                  "type": "CallExpression"
+                },
+                {
+                  "arguments": [
+                    {
+                      "end": 273,
+                      "properties": [
+                        {
+                          "end": 218,
+                          "key": {
+                            "end": 215,
+                            "name": "radius",
+                            "start": 209,
+                            "type": "Identifier"
+                          },
+                          "start": 209,
+                          "type": "ObjectProperty",
+                          "value": {
+                            "end": 218,
+                            "raw": "2",
+                            "start": 217,
+                            "type": "Literal",
+                            "type": "Literal",
+                            "value": 2
+                          }
+                        },
+                        {
+                          "end": 266,
+                          "key": {
+                            "end": 231,
+                            "name": "tags",
+                            "start": 227,
+                            "type": "Identifier"
+                          },
+                          "start": 227,
+                          "type": "ObjectProperty",
+                          "value": {
+                            "elements": [
+                              {
+                                "end": 240,
+                                "name": "thing3",
+                                "start": 234,
+                                "type": "Identifier",
+                                "type": "Identifier"
+                              },
+                              {
+                                "arguments": [
+                                  {
+                                    "end": 264,
+                                    "name": "thing3",
+                                    "start": 258,
+                                    "type": "Identifier",
+                                    "type": "Identifier"
+                                  }
+                                ],
+                                "callee": {
+                                  "end": 257,
+                                  "name": "getOppositeEdge",
+                                  "start": 242,
+                                  "type": "Identifier"
+                                },
+                                "end": 265,
+                                "optional": false,
+                                "start": 242,
+                                "type": "CallExpression",
+                                "type": "CallExpression"
+                              }
+                            ],
+                            "end": 266,
+                            "start": 233,
+                            "type": "ArrayExpression",
+                            "type": "ArrayExpression"
+                          }
+                        }
+                      ],
+                      "start": 200,
+                      "type": "ObjectExpression",
+                      "type": "ObjectExpression"
+                    },
+                    {
+                      "end": 276,
+                      "start": 275,
+                      "type": "PipeSubstitution",
+                      "type": "PipeSubstitution"
+                    }
+                  ],
+                  "callee": {
+                    "end": 199,
+                    "name": "fillet",
+                    "start": 193,
+                    "type": "Identifier"
+                  },
+                  "end": 277,
+                  "optional": false,
+                  "start": 193,
+                  "type": "CallExpression",
+                  "type": "CallExpression"
+                }
+              ],
+              "end": 277,
+              "start": 10,
+              "type": "PipeExpression",
+              "type": "PipeExpression"
+            },
+            "start": 0,
+            "type": "VariableDeclarator"
+          }
+        ],
+        "end": 277,
+        "kind": "const",
+        "start": 0,
+        "type": "VariableDeclaration",
+        "type": "VariableDeclaration"
+      }
+    ],
+    "end": 278,
+    "start": 0
+  }
+}

src/wasm-lib/kcl/tests/basic_fillet_cube_close_opposite/input.kcl

@@ -0,0 +1,11 @@
+part001 = startSketchOn('XY')
+  |> startProfileAt([0, 0], %)
+  |> line([0, 10], %, $thing)
+  |> line([10, 0], %)
+  |> line([0, -10], %, $thing2)
+  |> close(%, $thing3)
+  |> extrude(10, %)
+  |> fillet({
+       radius: 2,
+       tags: [thing3, getOppositeEdge(thing3)]
+     }, %)

src/wasm-lib/kcl/tests/basic_fillet_cube_close_opposite/program_memory.snap

@@ -0,0 +1,644 @@
+---
+source: kcl/src/simulation_tests.rs
+description: Program memory after executing basic_fillet_cube_close_opposite.kcl
+snapshot_kind: text
+---
+{
+  "environments": [
+    {
+      "bindings": {
+        "HALF_TURN": {
+          "type": "Number",
+          "value": 180.0,
+          "__meta": []
+        },
+        "QUARTER_TURN": {
+          "type": "Number",
+          "value": 90.0,
+          "__meta": []
+        },
+        "THREE_QUARTER_TURN": {
+          "type": "Number",
+          "value": 270.0,
+          "__meta": []
+        },
+        "ZERO": {
+          "type": "Number",
+          "value": 0.0,
+          "__meta": []
+        },
+        "part001": {
+          "type": "Solid",
+          "type": "Solid",
+          "id": "[uuid]",
+          "value": [
+            {
+              "faceId": "[uuid]",
+              "id": "[uuid]",
+              "sourceRange": [
+                66,
+                90,
+                0
+              ],
+              "tag": {
+                "end": 89,
+                "start": 83,
+                "type": "TagDeclarator",
+                "value": "thing"
+              },
+              "type": "extrudePlane"
+            },
+            {
+              "faceId": "[uuid]",
+              "id": "[uuid]",
+              "sourceRange": [
+                96,
+                112,
+                0
+              ],
+              "tag": null,
+              "type": "extrudePlane"
+            },
+            {
+              "faceId": "[uuid]",
+              "id": "[uuid]",
+              "sourceRange": [
+                118,
+                144,
+                0
+              ],
+              "tag": {
+                "end": 143,
+                "start": 136,
+                "type": "TagDeclarator",
+                "value": "thing2"
+              },
+              "type": "extrudePlane"
+            },
+            {
+              "faceId": "[uuid]",
+              "id": "[uuid]",
+              "sourceRange": [
+                150,
+                167,
+                0
+              ],
+              "tag": {
+                "end": 166,
+                "start": 159,
+                "type": "TagDeclarator",
+                "value": "thing3"
+              },
+              "type": "extrudePlane"
+            }
+          ],
+          "sketch": {
+            "type": "Sketch",
+            "id": "[uuid]",
+            "paths": [
+              {
+                "__geoMeta": {
+                  "id": "[uuid]",
+                  "sourceRange": [
+                    66,
+                    90,
+                    0
+                  ]
+                },
+                "from": [
+                  0.0,
+                  0.0
+                ],
+                "tag": {
+                  "end": 89,
+                  "start": 83,
+                  "type": "TagDeclarator",
+                  "value": "thing"
+                },
+                "to": [
+                  0.0,
+                  10.0
+                ],
+                "type": "ToPoint"
+              },
+              {
+                "__geoMeta": {
+                  "id": "[uuid]",
+                  "sourceRange": [
+                    96,
+                    112,
+                    0
+                  ]
+                },
+                "from": [
+                  0.0,
+                  10.0
+                ],
+                "tag": null,
+                "to": [
+                  10.0,
+                  10.0
+                ],
+                "type": "ToPoint"
+              },
+              {
+                "__geoMeta": {
+                  "id": "[uuid]",
+                  "sourceRange": [
+                    118,
+                    144,
+                    0
+                  ]
+                },
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+}

src/wasm-lib/kcl/tests/basic_fillet_cube_close_opposite/tokens.snap

@@ -0,0 +1,789 @@
+---
+source: kcl/src/simulation_tests.rs
+description: Result of tokenizing basic_fillet_cube_close_opposite.kcl
+snapshot_kind: text
+---
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+      "start": 0,
+      "end": 7,
+      "value": "part001"
+    },
+    {
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+      "end": 8,
+      "value": " "
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+      "value": "="
+    },
+    {
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+      "end": 10,
+      "value": " "
+    },
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+      "start": 10,
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+      "value": "startSketchOn"
+    },
+    {
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+      "start": 23,
+      "end": 24,
+      "value": "("
+    },
+    {
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+      "start": 24,
+      "end": 28,
+      "value": "'XY'"
+    },
+    {
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+      "end": 29,
+      "value": ")"
+    },
+    {
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+      "end": 32,
+      "value": "\n  "
+    },
+    {
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+      "end": 34,
+      "value": "|>"
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+      "end": 35,
+      "value": " "
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+    {
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+      "start": 35,
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+      "value": "startProfileAt"
+    },
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+      "value": "("
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+    {
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+      "value": "["
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+      "value": "0"
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+      "value": " "
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+      "end": 55,
+      "value": "0"
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+      "value": "]"
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+      "value": "0"
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+    {
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+    {
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+    },
+    {
+      "type": "whitespace",
+      "start": 167,
+      "end": 170,
+      "value": "\n  "
+    },
+    {
+      "type": "operator",
+      "start": 170,
+      "end": 172,
+      "value": "|>"
+    },
+    {
+      "type": "whitespace",
+      "start": 172,
+      "end": 173,
+      "value": " "
+    },
+    {
+      "type": "word",
+      "start": 173,
+      "end": 180,
+      "value": "extrude"
+    },
+    {
+      "type": "brace",
+      "start": 180,
+      "end": 181,
+      "value": "("
+    },
+    {
+      "type": "number",
+      "start": 181,
+      "end": 183,
+      "value": "10"
+    },
+    {
+      "type": "comma",
+      "start": 183,
+      "end": 184,
+      "value": ","
+    },
+    {
+      "type": "whitespace",
+      "start": 184,
+      "end": 185,
+      "value": " "
+    },
+    {
+      "type": "operator",
+      "start": 185,
+      "end": 186,
+      "value": "%"
+    },
+    {
+      "type": "brace",
+      "start": 186,
+      "end": 187,
+      "value": ")"
+    },
+    {
+      "type": "whitespace",
+      "start": 187,
+      "end": 190,
+      "value": "\n  "
+    },
+    {
+      "type": "operator",
+      "start": 190,
+      "end": 192,
+      "value": "|>"
+    },
+    {
+      "type": "whitespace",
+      "start": 192,
+      "end": 193,
+      "value": " "
+    },
+    {
+      "type": "word",
+      "start": 193,
+      "end": 199,
+      "value": "fillet"
+    },
+    {
+      "type": "brace",
+      "start": 199,
+      "end": 200,
+      "value": "("
+    },
+    {
+      "type": "brace",
+      "start": 200,
+      "end": 201,
+      "value": "{"
+    },
+    {
+      "type": "whitespace",
+      "start": 201,
+      "end": 209,
+      "value": "\n       "
+    },
+    {
+      "type": "word",
+      "start": 209,
+      "end": 215,
+      "value": "radius"
+    },
+    {
+      "type": "colon",
+      "start": 215,
+      "end": 216,
+      "value": ":"
+    },
+    {
+      "type": "whitespace",
+      "start": 216,
+      "end": 217,
+      "value": " "
+    },
+    {
+      "type": "number",
+      "start": 217,
+      "end": 218,
+      "value": "2"
+    },
+    {
+      "type": "comma",
+      "start": 218,
+      "end": 219,
+      "value": ","
+    },
+    {
+      "type": "whitespace",
+      "start": 219,
+      "end": 227,
+      "value": "\n       "
+    },
+    {
+      "type": "word",
+      "start": 227,
+      "end": 231,
+      "value": "tags"
+    },
+    {
+      "type": "colon",
+      "start": 231,
+      "end": 232,
+      "value": ":"
+    },
+    {
+      "type": "whitespace",
+      "start": 232,
+      "end": 233,
+      "value": " "
+    },
+    {
+      "type": "brace",
+      "start": 233,
+      "end": 234,
+      "value": "["
+    },
+    {
+      "type": "word",
+      "start": 234,
+      "end": 240,
+      "value": "thing3"
+    },
+    {
+      "type": "comma",
+      "start": 240,
+      "end": 241,
+      "value": ","
+    },
+    {
+      "type": "whitespace",
+      "start": 241,
+      "end": 242,
+      "value": " "
+    },
+    {
+      "type": "word",
+      "start": 242,
+      "end": 257,
+      "value": "getOppositeEdge"
+    },
+    {
+      "type": "brace",
+      "start": 257,
+      "end": 258,
+      "value": "("
+    },
+    {
+      "type": "word",
+      "start": 258,
+      "end": 264,
+      "value": "thing3"
+    },
+    {
+      "type": "brace",
+      "start": 264,
+      "end": 265,
+      "value": ")"
+    },
+    {
+      "type": "brace",
+      "start": 265,
+      "end": 266,
+      "value": "]"
+    },
+    {
+      "type": "whitespace",
+      "start": 266,
+      "end": 272,
+      "value": "\n     "
+    },
+    {
+      "type": "brace",
+      "start": 272,
+      "end": 273,
+      "value": "}"
+    },
+    {
+      "type": "comma",
+      "start": 273,
+      "end": 274,
+      "value": ","
+    },
+    {
+      "type": "whitespace",
+      "start": 274,
+      "end": 275,
+      "value": " "
+    },
+    {
+      "type": "operator",
+      "start": 275,
+      "end": 276,
+      "value": "%"
+    },
+    {
+      "type": "brace",
+      "start": 276,
+      "end": 277,
+      "value": ")"
+    },
+    {
+      "type": "whitespace",
+      "start": 277,
+      "end": 278,
+      "value": "\n"
+    }
+  ]
+}

src/wasm-lib/kcl/tests/basic_fillet_cube_end/ast.snap

@@ -0,0 +1,411 @@
+---
+source: kcl/src/simulation_tests.rs
+description: Result of parsing basic_fillet_cube_end.kcl
+snapshot_kind: text
+---
+{
+  "Ok": {
+    "body": [
+      {
+        "declarations": [
+          {
+            "end": 266,
+            "id": {
+              "end": 7,
+              "name": "part001",
+              "start": 0,
+              "type": "Identifier"
+            },
+            "init": {
+              "body": [
+                {
+                  "arguments": [
+                    {
+                      "end": 28,
+                      "raw": "'XY'",
+                      "start": 24,
+                      "type": "Literal",
+                      "type": "Literal",
+                      "value": "XY"
+                    }
+                  ],
+                  "callee": {
+                    "end": 23,
+                    "name": "startSketchOn",
+                    "start": 10,
+                    "type": "Identifier"
+                  },
+                  "end": 29,
+                  "optional": false,
+                  "start": 10,
+                  "type": "CallExpression",
+                  "type": "CallExpression"
+                },
+                {
+                  "arguments": [
+                    {
+                      "elements": [
+                        {
+                          "end": 52,
+                          "raw": "0",
+                          "start": 51,
+                          "type": "Literal",
+                          "type": "Literal",
+                          "value": 0
+                        },
+                        {
+                          "end": 55,
+                          "raw": "0",
+                          "start": 54,
+                          "type": "Literal",
+                          "type": "Literal",
+                          "value": 0
+                        }
+                      ],
+                      "end": 56,
+                      "start": 50,
+                      "type": "ArrayExpression",
+                      "type": "ArrayExpression"
+                    },
+                    {
+                      "end": 59,
+                      "start": 58,
+                      "type": "PipeSubstitution",
+                      "type": "PipeSubstitution"
+                    }
+                  ],
+                  "callee": {
+                    "end": 49,
+                    "name": "startProfileAt",
+                    "start": 35,
+                    "type": "Identifier"
+                  },
+                  "end": 60,
+                  "optional": false,
+                  "start": 35,
+                  "type": "CallExpression",
+                  "type": "CallExpression"
+                },
+                {
+                  "arguments": [
+                    {
+                      "elements": [
+                        {
+                          "end": 73,
+                          "raw": "0",
+                          "start": 72,
+                          "type": "Literal",
+                          "type": "Literal",
+                          "value": 0
+                        },
+                        {
+                          "end": 77,
+                          "raw": "10",
+                          "start": 75,
+                          "type": "Literal",
+                          "type": "Literal",
+                          "value": 10
+                        }
+                      ],
+                      "end": 78,
+                      "start": 71,
+                      "type": "ArrayExpression",
+                      "type": "ArrayExpression"
+                    },
+                    {
+                      "end": 81,
+                      "start": 80,
+                      "type": "PipeSubstitution",
+                      "type": "PipeSubstitution"
+                    },
+                    {
+                      "end": 89,
+                      "start": 83,
+                      "type": "TagDeclarator",
+                      "type": "TagDeclarator",
+                      "value": "thing"
+                    }
+                  ],
+                  "callee": {
+                    "end": 70,
+                    "name": "line",
+                    "start": 66,
+                    "type": "Identifier"
+                  },
+                  "end": 90,
+                  "optional": false,
+                  "start": 66,
+                  "type": "CallExpression",
+                  "type": "CallExpression"
+                },
+                {
+                  "arguments": [
+                    {
+                      "elements": [
+                        {
+                          "end": 104,
+                          "raw": "10",
+                          "start": 102,
+                          "type": "Literal",
+                          "type": "Literal",
+                          "value": 10
+                        },
+                        {
+                          "end": 107,
+                          "raw": "0",
+                          "start": 106,
+                          "type": "Literal",
+                          "type": "Literal",
+                          "value": 0
+                        }
+                      ],
+                      "end": 108,
+                      "start": 101,
+                      "type": "ArrayExpression",
+                      "type": "ArrayExpression"
+                    },
+                    {
+                      "end": 111,
+                      "start": 110,
+                      "type": "PipeSubstitution",
+                      "type": "PipeSubstitution"
+                    }
+                  ],
+                  "callee": {
+                    "end": 100,
+                    "name": "line",
+                    "start": 96,
+                    "type": "Identifier"
+                  },
+                  "end": 112,
+                  "optional": false,
+                  "start": 96,
+                  "type": "CallExpression",
+                  "type": "CallExpression"
+                },
+                {
+                  "arguments": [
+                    {
+                      "elements": [
+                        {
+                          "end": 125,
+                          "raw": "0",
+                          "start": 124,
+                          "type": "Literal",
+                          "type": "Literal",
+                          "value": 0
+                        },
+                        {
+                          "argument": {
+                            "end": 130,
+                            "raw": "10",
+                            "start": 128,
+                            "type": "Literal",
+                            "type": "Literal",
+                            "value": 10
+                          },
+                          "end": 130,
+                          "operator": "-",
+                          "start": 127,
+                          "type": "UnaryExpression",
+                          "type": "UnaryExpression"
+                        }
+                      ],
+                      "end": 131,
+                      "start": 123,
+                      "type": "ArrayExpression",
+                      "type": "ArrayExpression"
+                    },
+                    {
+                      "end": 134,
+                      "start": 133,
+                      "type": "PipeSubstitution",
+                      "type": "PipeSubstitution"
+                    },
+                    {
+                      "end": 143,
+                      "start": 136,
+                      "type": "TagDeclarator",
+                      "type": "TagDeclarator",
+                      "value": "thing2"
+                    }
+                  ],
+                  "callee": {
+                    "end": 122,
+                    "name": "line",
+                    "start": 118,
+                    "type": "Identifier"
+                  },
+                  "end": 144,
+                  "optional": false,
+                  "start": 118,
+                  "type": "CallExpression",
+                  "type": "CallExpression"
+                },
+                {
+                  "arguments": [
+                    {
+                      "end": 157,
+                      "start": 156,
+                      "type": "PipeSubstitution",
+                      "type": "PipeSubstitution"
+                    }
+                  ],
+                  "callee": {
+                    "end": 155,
+                    "name": "close",
+                    "start": 150,
+                    "type": "Identifier"
+                  },
+                  "end": 158,
+                  "optional": false,
+                  "start": 150,
+                  "type": "CallExpression",
+                  "type": "CallExpression"
+                },
+                {
+                  "arguments": [
+                    {
+                      "end": 174,
+                      "raw": "10",
+                      "start": 172,
+                      "type": "Literal",
+                      "type": "Literal",
+                      "value": 10
+                    },
+                    {
+                      "end": 177,
+                      "start": 176,
+                      "type": "PipeSubstitution",
+                      "type": "PipeSubstitution"
+                    }
+                  ],
+                  "callee": {
+                    "end": 171,
+                    "name": "extrude",
+                    "start": 164,
+                    "type": "Identifier"
+                  },
+                  "end": 178,
+                  "optional": false,
+                  "start": 164,
+                  "type": "CallExpression",
+                  "type": "CallExpression"
+                },
+                {
+                  "arguments": [
+                    {
+                      "end": 262,
+                      "properties": [
+                        {
+                          "end": 209,
+                          "key": {
+                            "end": 206,
+                            "name": "radius",
+                            "start": 200,
+                            "type": "Identifier"
+                          },
+                          "start": 200,
+                          "type": "ObjectProperty",
+                          "value": {
+                            "end": 209,
+                            "raw": "2",
+                            "start": 208,
+                            "type": "Literal",
+                            "type": "Literal",
+                            "value": 2
+                          }
+                        },
+                        {
+                          "end": 255,
+                          "key": {
+                            "end": 222,
+                            "name": "tags",
+                            "start": 218,
+                            "type": "Identifier"
+                          },
+                          "start": 218,
+                          "type": "ObjectProperty",
+                          "value": {
+                            "elements": [
+                              {
+                                "end": 230,
+                                "name": "thing",
+                                "start": 225,
+                                "type": "Identifier",
+                                "type": "Identifier"
+                              },
+                              {
+                                "arguments": [
+                                  {
+                                    "end": 253,
+                                    "name": "thing",
+                                    "start": 248,
+                                    "type": "Identifier",
+                                    "type": "Identifier"
+                                  }
+                                ],
+                                "callee": {
+                                  "end": 247,
+                                  "name": "getOppositeEdge",
+                                  "start": 232,
+                                  "type": "Identifier"
+                                },
+                                "end": 254,
+                                "optional": false,
+                                "start": 232,
+                                "type": "CallExpression",
+                                "type": "CallExpression"
+                              }
+                            ],
+                            "end": 255,
+                            "start": 224,
+                            "type": "ArrayExpression",
+                            "type": "ArrayExpression"
+                          }
+                        }
+                      ],
+                      "start": 191,
+                      "type": "ObjectExpression",
+                      "type": "ObjectExpression"
+                    },
+                    {
+                      "end": 265,
+                      "start": 264,
+                      "type": "PipeSubstitution",
+                      "type": "PipeSubstitution"
+                    }
+                  ],
+                  "callee": {
+                    "end": 190,
+                    "name": "fillet",
+                    "start": 184,
+                    "type": "Identifier"
+                  },
+                  "end": 266,
+                  "optional": false,
+                  "start": 184,
+                  "type": "CallExpression",
+                  "type": "CallExpression"
+                }
+              ],
+              "end": 266,
+              "start": 10,
+              "type": "PipeExpression",
+              "type": "PipeExpression"
+            },
+            "start": 0,
+            "type": "VariableDeclarator"
+          }
+        ],
+        "end": 266,
+        "kind": "const",
+        "start": 0,
+        "type": "VariableDeclaration",
+        "type": "VariableDeclaration"
+      }
+    ],
+    "end": 267,
+    "start": 0
+  }
+}

src/wasm-lib/kcl/tests/basic_fillet_cube_end/input.kcl

@@ -0,0 +1,11 @@
+part001 = startSketchOn('XY')
+  |> startProfileAt([0, 0], %)
+  |> line([0, 10], %, $thing)
+  |> line([10, 0], %)
+  |> line([0, -10], %, $thing2)
+  |> close(%)
+  |> extrude(10, %)
+  |> fillet({
+       radius: 2,
+       tags: [thing, getOppositeEdge(thing)]
+     }, %)

src/wasm-lib/kcl/tests/basic_fillet_cube_end/program_memory.snap

@@ -0,0 +1,515 @@
+---
+source: kcl/src/simulation_tests.rs
+description: Program memory after executing basic_fillet_cube_end.kcl
+snapshot_kind: text
+---
+{
+  "environments": [
+    {
+      "bindings": {
+        "HALF_TURN": {
+          "type": "Number",
+          "value": 180.0,
+          "__meta": []
+        },
+        "QUARTER_TURN": {
+          "type": "Number",
+          "value": 90.0,
+          "__meta": []
+        },
+        "THREE_QUARTER_TURN": {
+          "type": "Number",
+          "value": 270.0,
+          "__meta": []
+        },
+        "ZERO": {
+          "type": "Number",
+          "value": 0.0,
+          "__meta": []
+        },
+        "part001": {
+          "type": "Solid",
+          "type": "Solid",
+          "id": "[uuid]",
+          "value": [
+            {
+              "faceId": "[uuid]",
+              "id": "[uuid]",
+              "sourceRange": [
+                66,
+                90,
+                0
+              ],
+              "tag": {
+                "end": 89,
+                "start": 83,
+                "type": "TagDeclarator",
+                "value": "thing"
+              },
+              "type": "extrudePlane"
+            },
+            {
+              "faceId": "[uuid]",
+              "id": "[uuid]",
+              "sourceRange": [
+                96,
+                112,
+                0
+              ],
+              "tag": null,
+              "type": "extrudePlane"
+            },
+            {
+              "faceId": "[uuid]",
+              "id": "[uuid]",
+              "sourceRange": [
+                118,
+                144,
+                0
+              ],
+              "tag": {
+                "end": 143,
+                "start": 136,
+                "type": "TagDeclarator",
+                "value": "thing2"
+              },
+              "type": "extrudePlane"
+            },
+            {
+              "faceId": "[uuid]",
+              "id": "[uuid]",
+              "sourceRange": [
+                150,
+                158,
+                0
+              ],
+              "tag": null,
+              "type": "extrudePlane"
+            }
+          ],
+          "sketch": {
+            "type": "Sketch",
+            "id": "[uuid]",
+            "paths": [
+              {
+                "__geoMeta": {
+                  "id": "[uuid]",
+                  "sourceRange": [
+                    66,
+                    90,
+                    0
+                  ]
+                },
+                "from": [
+                  0.0,
+                  0.0
+                ],
+                "tag": {
+                  "end": 89,
+                  "start": 83,
+                  "type": "TagDeclarator",
+                  "value": "thing"
+                },
+                "to": [
+                  0.0,
+                  10.0
+                ],
+                "type": "ToPoint"
+              },
+              {
+                "__geoMeta": {
+                  "id": "[uuid]",
+                  "sourceRange": [
+                    96,
+                    112,
+                    0
+                  ]
+                },
+                "from": [
+                  0.0,
+                  10.0
+                ],
+                "tag": null,
+                "to": [
+                  10.0,
+                  10.0
+                ],
+                "type": "ToPoint"
+              },
+              {
+                "__geoMeta": {
+                  "id": "[uuid]",
+                  "sourceRange": [
+                    118,
+                    144,
+                    0
+                  ]
+                },
+                "from": [
+                  10.0,
+                  10.0
+                ],
+                "tag": {
+                  "end": 143,
+                  "start": 136,
+                  "type": "TagDeclarator",
+                  "value": "thing2"
+                },
+                "to": [
+                  10.0,
+                  0.0
+                ],
+                "type": "ToPoint"
+              },
+              {
+                "__geoMeta": {
+                  "id": "[uuid]",
+                  "sourceRange": [
+                    150,
+                    158,
+                    0
+                  ]
+                },
+                "from": [
+                  10.0,
+                  0.0
+                ],
+                "tag": null,
+                "to": [
+                  0.0,
+                  0.0
+                ],
+                "type": "ToPoint"
+              }
+            ],
+            "on": {
+              "type": "plane",
+              "id": "[uuid]",
+              "value": "XY",
+              "origin": {
+                "x": 0.0,
+                "y": 0.0,
+                "z": 0.0
+              },
+              "xAxis": {
+                "x": 1.0,
+                "y": 0.0,
+                "z": 0.0
+              },
+              "yAxis": {
+                "x": 0.0,
+                "y": 1.0,
+                "z": 0.0
+              },
+              "zAxis": {
+                "x": 0.0,
+                "y": 0.0,
+                "z": 1.0
+              },
+              "__meta": []
+            },
+            "start": {
+              "from": [
+                0.0,
+                0.0
+              ],
+              "to": [
+                0.0,
+                0.0
+              ],
+              "tag": null,
+              "__geoMeta": {
+                "id": "[uuid]",
+                "sourceRange": [
+                  35,
+                  60,
+                  0
+                ]
+              }
+            },
+            "tags": {
+              "thing": {
+                "type": "TagIdentifier",
+                "value": "thing",
+                "info": {
+                  "type": "TagEngineInfo",
+                  "id": "[uuid]",
+                  "sketch": "[uuid]",
+                  "path": {
+                    "__geoMeta": {
+                      "id": "[uuid]",
+                      "sourceRange": [
+                        66,
+                        90,
+                        0
+                      ]
+                    },
+                    "from": [
+                      0.0,
+                      0.0
+                    ],
+                    "tag": {
+                      "end": 89,
+                      "start": 83,
+                      "type": "TagDeclarator",
+                      "value": "thing"
+                    },
+                    "to": [
+                      0.0,
+                      10.0
+                    ],
+                    "type": "ToPoint"
+                  },
+                  "surface": {
+                    "faceId": "[uuid]",
+                    "id": "[uuid]",
+                    "sourceRange": [
+                      66,
+                      90,
+                      0
+                    ],
+                    "tag": {
+                      "end": 89,
+                      "start": 83,
+                      "type": "TagDeclarator",
+                      "value": "thing"
+                    },
+                    "type": "extrudePlane"
+                  }
+                },
+                "__meta": [
+                  {
+                    "sourceRange": [
+                      83,
+                      89,
+                      0
+                    ]
+                  }
+                ]
+              },
+              "thing2": {
+                "type": "TagIdentifier",
+                "value": "thing2",
+                "info": {
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+}

src/wasm-lib/kcl/tests/basic_fillet_cube_end/tokens.snap

@@ -0,0 +1,765 @@
+---
+source: kcl/src/simulation_tests.rs
+description: Result of tokenizing basic_fillet_cube_end.kcl
+snapshot_kind: text
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+}

src/wasm-lib/kcl/tests/basic_fillet_cube_next_adjacent/ast.snap

@@ -0,0 +1,418 @@
+---
+source: kcl/src/simulation_tests.rs
+description: Result of parsing basic_fillet_cube_next_adjacent.kcl
+snapshot_kind: text
+---
+{
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+                      "type": "Literal",
+                      "value": "XY"
+                    }
+                  ],
+                  "callee": {
+                    "end": 23,
+                    "name": "startSketchOn",
+                    "start": 10,
+                    "type": "Identifier"
+                  },
+                  "end": 29,
+                  "optional": false,
+                  "start": 10,
+                  "type": "CallExpression",
+                  "type": "CallExpression"
+                },
+                {
+                  "arguments": [
+                    {
+                      "elements": [
+                        {
+                          "end": 52,
+                          "raw": "0",
+                          "start": 51,
+                          "type": "Literal",
+                          "type": "Literal",
+                          "value": 0
+                        },
+                        {
+                          "end": 55,
+                          "raw": "0",
+                          "start": 54,
+                          "type": "Literal",
+                          "type": "Literal",
+                          "value": 0
+                        }
+                      ],
+                      "end": 56,
+                      "start": 50,
+                      "type": "ArrayExpression",
+                      "type": "ArrayExpression"
+                    },
+                    {
+                      "end": 59,
+                      "start": 58,
+                      "type": "PipeSubstitution",
+                      "type": "PipeSubstitution"
+                    }
+                  ],
+                  "callee": {
+                    "end": 49,
+                    "name": "startProfileAt",
+                    "start": 35,
+                    "type": "Identifier"
+                  },
+                  "end": 60,
+                  "optional": false,
+                  "start": 35,
+                  "type": "CallExpression",
+                  "type": "CallExpression"
+                },
+                {
+                  "arguments": [
+                    {
+                      "elements": [
+                        {
+                          "end": 73,
+                          "raw": "0",
+                          "start": 72,
+                          "type": "Literal",
+                          "type": "Literal",
+                          "value": 0
+                        },
+                        {
+                          "end": 77,
+                          "raw": "10",
+                          "start": 75,
+                          "type": "Literal",
+                          "type": "Literal",
+                          "value": 10
+                        }
+                      ],
+                      "end": 78,
+                      "start": 71,
+                      "type": "ArrayExpression",
+                      "type": "ArrayExpression"
+                    },
+                    {
+                      "end": 81,
+                      "start": 80,
+                      "type": "PipeSubstitution",
+                      "type": "PipeSubstitution"
+                    },
+                    {
+                      "end": 89,
+                      "start": 83,
+                      "type": "TagDeclarator",
+                      "type": "TagDeclarator",
+                      "value": "thing"
+                    }
+                  ],
+                  "callee": {
+                    "end": 70,
+                    "name": "line",
+                    "start": 66,
+                    "type": "Identifier"
+                  },
+                  "end": 90,
+                  "optional": false,
+                  "start": 66,
+                  "type": "CallExpression",
+                  "type": "CallExpression"
+                },
+                {
+                  "arguments": [
+                    {
+                      "elements": [
+                        {
+                          "end": 104,
+                          "raw": "10",
+                          "start": 102,
+                          "type": "Literal",
+                          "type": "Literal",
+                          "value": 10
+                        },
+                        {
+                          "end": 107,
+                          "raw": "0",
+                          "start": 106,
+                          "type": "Literal",
+                          "type": "Literal",
+                          "value": 0
+                        }
+                      ],
+                      "end": 108,
+                      "start": 101,
+                      "type": "ArrayExpression",
+                      "type": "ArrayExpression"
+                    },
+                    {
+                      "end": 111,
+                      "start": 110,
+                      "type": "PipeSubstitution",
+                      "type": "PipeSubstitution"
+                    },
+                    {
+                      "end": 120,
+                      "start": 113,
+                      "type": "TagDeclarator",
+                      "type": "TagDeclarator",
+                      "value": "thing1"
+                    }
+                  ],
+                  "callee": {
+                    "end": 100,
+                    "name": "line",
+                    "start": 96,
+                    "type": "Identifier"
+                  },
+                  "end": 121,
+                  "optional": false,
+                  "start": 96,
+                  "type": "CallExpression",
+                  "type": "CallExpression"
+                },
+                {
+                  "arguments": [
+                    {
+                      "elements": [
+                        {
+                          "end": 134,
+                          "raw": "0",
+                          "start": 133,
+                          "type": "Literal",
+                          "type": "Literal",
+                          "value": 0
+                        },
+                        {
+                          "argument": {
+                            "end": 139,
+                            "raw": "10",
+                            "start": 137,
+                            "type": "Literal",
+                            "type": "Literal",
+                            "value": 10
+                          },
+                          "end": 139,
+                          "operator": "-",
+                          "start": 136,
+                          "type": "UnaryExpression",
+                          "type": "UnaryExpression"
+                        }
+                      ],
+                      "end": 140,
+                      "start": 132,
+                      "type": "ArrayExpression",
+                      "type": "ArrayExpression"
+                    },
+                    {
+                      "end": 143,
+                      "start": 142,
+                      "type": "PipeSubstitution",
+                      "type": "PipeSubstitution"
+                    },
+                    {
+                      "end": 152,
+                      "start": 145,
+                      "type": "TagDeclarator",
+                      "type": "TagDeclarator",
+                      "value": "thing2"
+                    }
+                  ],
+                  "callee": {
+                    "end": 131,
+                    "name": "line",
+                    "start": 127,
+                    "type": "Identifier"
+                  },
+                  "end": 153,
+                  "optional": false,
+                  "start": 127,
+                  "type": "CallExpression",
+                  "type": "CallExpression"
+                },
+                {
+                  "arguments": [
+                    {
+                      "end": 166,
+                      "start": 165,
+                      "type": "PipeSubstitution",
+                      "type": "PipeSubstitution"
+                    },
+                    {
+                      "end": 175,
+                      "start": 168,
+                      "type": "TagDeclarator",
+                      "type": "TagDeclarator",
+                      "value": "thing3"
+                    }
+                  ],
+                  "callee": {
+                    "end": 164,
+                    "name": "close",
+                    "start": 159,
+                    "type": "Identifier"
+                  },
+                  "end": 176,
+                  "optional": false,
+                  "start": 159,
+                  "type": "CallExpression",
+                  "type": "CallExpression"
+                },
+                {
+                  "arguments": [
+                    {
+                      "end": 192,
+                      "raw": "10",
+                      "start": 190,
+                      "type": "Literal",
+                      "type": "Literal",
+                      "value": 10
+                    },
+                    {
+                      "end": 195,
+                      "start": 194,
+                      "type": "PipeSubstitution",
+                      "type": "PipeSubstitution"
+                    }
+                  ],
+                  "callee": {
+                    "end": 189,
+                    "name": "extrude",
+                    "start": 182,
+                    "type": "Identifier"
+                  },
+                  "end": 196,
+                  "optional": false,
+                  "start": 182,
+                  "type": "CallExpression",
+                  "type": "CallExpression"
+                },
+                {
+                  "arguments": [
+                    {
+                      "end": 278,
+                      "properties": [
+                        {
+                          "end": 227,
+                          "key": {
+                            "end": 224,
+                            "name": "radius",
+                            "start": 218,
+                            "type": "Identifier"
+                          },
+                          "start": 218,
+                          "type": "ObjectProperty",
+                          "value": {
+                            "end": 227,
+                            "raw": "2",
+                            "start": 226,
+                            "type": "Literal",
+                            "type": "Literal",
+                            "value": 2
+                          }
+                        },
+                        {
+                          "end": 271,
+                          "key": {
+                            "end": 240,
+                            "name": "tags",
+                            "start": 236,
+                            "type": "Identifier"
+                          },
+                          "start": 236,
+                          "type": "ObjectProperty",
+                          "value": {
+                            "elements": [
+                              {
+                                "arguments": [
+                                  {
+                                    "end": 269,
+                                    "name": "thing3",
+                                    "start": 263,
+                                    "type": "Identifier",
+                                    "type": "Identifier"
+                                  }
+                                ],
+                                "callee": {
+                                  "end": 262,
+                                  "name": "getNextAdjacentEdge",
+                                  "start": 243,
+                                  "type": "Identifier"
+                                },
+                                "end": 270,
+                                "optional": false,
+                                "start": 243,
+                                "type": "CallExpression",
+                                "type": "CallExpression"
+                              }
+                            ],
+                            "end": 271,
+                            "start": 242,
+                            "type": "ArrayExpression",
+                            "type": "ArrayExpression"
+                          }
+                        }
+                      ],
+                      "start": 209,
+                      "type": "ObjectExpression",
+                      "type": "ObjectExpression"
+                    },
+                    {
+                      "end": 281,
+                      "start": 280,
+                      "type": "PipeSubstitution",
+                      "type": "PipeSubstitution"
+                    }
+                  ],
+                  "callee": {
+                    "end": 208,
+                    "name": "fillet",
+                    "start": 202,
+                    "type": "Identifier"
+                  },
+                  "end": 282,
+                  "optional": false,
+                  "start": 202,
+                  "type": "CallExpression",
+                  "type": "CallExpression"
+                }
+              ],
+              "end": 282,
+              "start": 10,
+              "type": "PipeExpression",
+              "type": "PipeExpression"
+            },
+            "start": 0,
+            "type": "VariableDeclarator"
+          }
+        ],
+        "end": 282,
+        "kind": "const",
+        "start": 0,
+        "type": "VariableDeclaration",
+        "type": "VariableDeclaration"
+      }
+    ],
+    "end": 283,
+    "start": 0
+  }
+}

src/wasm-lib/kcl/tests/basic_fillet_cube_next_adjacent/input.kcl

@@ -0,0 +1,11 @@
+part001 = startSketchOn('XY')
+  |> startProfileAt([0, 0], %)
+  |> line([0, 10], %, $thing)
+  |> line([10, 0], %, $thing1)
+  |> line([0, -10], %, $thing2)
+  |> close(%, $thing3)
+  |> extrude(10, %)
+  |> fillet({
+       radius: 2,
+       tags: [getNextAdjacentEdge(thing3)]
+     }, %)

src/wasm-lib/kcl/tests/basic_fillet_cube_next_adjacent/program_memory.snap

@@ -0,0 +1,766 @@
+---
+source: kcl/src/simulation_tests.rs
+description: Program memory after executing basic_fillet_cube_next_adjacent.kcl
+snapshot_kind: text
+---
+{
+  "environments": [
+    {
+      "bindings": {
+        "HALF_TURN": {
+          "type": "Number",
+          "value": 180.0,
+          "__meta": []
+        },
+        "QUARTER_TURN": {
+          "type": "Number",
+          "value": 90.0,
+          "__meta": []
+        },
+        "THREE_QUARTER_TURN": {
+          "type": "Number",
+          "value": 270.0,
+          "__meta": []
+        },
+        "ZERO": {
+          "type": "Number",
+          "value": 0.0,
+          "__meta": []
+        },
+        "part001": {
+          "type": "Solid",
+          "type": "Solid",
+          "id": "[uuid]",
+          "value": [
+            {
+              "faceId": "[uuid]",
+              "id": "[uuid]",
+              "sourceRange": [
+                66,
+                90,
+                0
+              ],
+              "tag": {
+                "end": 89,
+                "start": 83,
+                "type": "TagDeclarator",
+                "value": "thing"
+              },
+              "type": "extrudePlane"
+            },
+            {
+              "faceId": "[uuid]",
+              "id": "[uuid]",
+              "sourceRange": [
+                96,
+                121,
+                0
+              ],
+              "tag": {
+                "end": 120,
+                "start": 113,
+                "type": "TagDeclarator",
+                "value": "thing1"
+              },
+              "type": "extrudePlane"
+            },
+            {
+              "faceId": "[uuid]",
+              "id": "[uuid]",
+              "sourceRange": [
+                127,
+                153,
+                0
+              ],
+              "tag": {
+                "end": 152,
+                "start": 145,
+                "type": "TagDeclarator",
+                "value": "thing2"
+              },
+              "type": "extrudePlane"
+            },
+            {
+              "faceId": "[uuid]",
+              "id": "[uuid]",
+              "sourceRange": [
+                159,
+                176,
+                0
+              ],
+              "tag": {
+                "end": 175,
+                "start": 168,
+                "type": "TagDeclarator",
+                "value": "thing3"
+              },
+              "type": "extrudePlane"
+            }
+          ],
+          "sketch": {
+            "type": "Sketch",
+            "id": "[uuid]",
+            "paths": [
+              {
+                "__geoMeta": {
+                  "id": "[uuid]",
+                  "sourceRange": [
+                    66,
+                    90,
+                    0
+                  ]
+                },
+                "from": [
+                  0.0,
+                  0.0
+                ],
+                "tag": {
+                  "end": 89,
+                  "start": 83,
+                  "type": "TagDeclarator",
+                  "value": "thing"
+                },
+                "to": [
+                  0.0,
+                  10.0
+                ],
+                "type": "ToPoint"
+              },
+              {
+                "__geoMeta": {
+                  "id": "[uuid]",
+                  "sourceRange": [
+                    96,
+                    121,
+                    0
+                  ]
+                },
+                "from": [
+                  0.0,
+                  10.0
+                ],
+                "tag": {
+                  "end": 120,
+                  "start": 113,
+                  "type": "TagDeclarator",
+                  "value": "thing1"
+                },
+                "to": [
+                  10.0,
+                  10.0
+                ],
+                "type": "ToPoint"
+              },
+              {
+                "__geoMeta": {
+                  "id": "[uuid]",
+                  "sourceRange": [
+                    127,
+                    153,
+                    0
+                  ]
+                },
+                "from": [
+                  10.0,
+                  10.0
+                ],
+                "tag": {
+                  "end": 152,
+                  "start": 145,
+                  "type": "TagDeclarator",
+                  "value": "thing2"
+                },
+                "to": [
+                  10.0,
+                  0.0
+                ],
+                "type": "ToPoint"
+              },
+              {
+                "__geoMeta": {
+                  "id": "[uuid]",
+                  "sourceRange": [
+                    159,
+                    176,
+                    0
+                  ]
+                },
+                "from": [
+                  10.0,
+                  0.0
+                ],
+                "tag": {
+                  "end": 175,
+                  "start": 168,
+                  "type": "TagDeclarator",
+                  "value": "thing3"
+                },
+                "to": [
+                  0.0,
+                  0.0
+                ],
+                "type": "ToPoint"
+              }
+            ],
+            "on": {
+              "type": "plane",
+              "id": "[uuid]",
+              "value": "XY",
+              "origin": {
+                "x": 0.0,
+                "y": 0.0,
+                "z": 0.0
+              },
+              "xAxis": {
+                "x": 1.0,
+                "y": 0.0,
+                "z": 0.0
+              },
+              "yAxis": {
+                "x": 0.0,
+                "y": 1.0,
+                "z": 0.0
+              },
+              "zAxis": {
+                "x": 0.0,
+                "y": 0.0,
+                "z": 1.0
+              },
+              "__meta": []
+            },
+            "start": {
+              "from": [
+                0.0,
+                0.0
+              ],
+              "to": [
+                0.0,
+                0.0
+              ],
+              "tag": null,
+              "__geoMeta": {
+                "id": "[uuid]",
+                "sourceRange": [
+                  35,
+                  60,
+                  0
+                ]
+              }
+            },
+            "tags": {
+              "thing": {
+                "type": "TagIdentifier",
+                "value": "thing",
+                "info": {
+                  "type": "TagEngineInfo",
+                  "id": "[uuid]",
+                  "sketch": "[uuid]",
+                  "path": {
+                    "__geoMeta": {
+                      "id": "[uuid]",
+                      "sourceRange": [
+                        66,
+                        90,
+                        0
+                      ]
+                    },
+                    "from": [
+                      0.0,
+                      0.0
+                    ],
+                    "tag": {
+                      "end": 89,
+                      "start": 83,
+                      "type": "TagDeclarator",
+                      "value": "thing"
+                    },
+                    "to": [
+                      0.0,
+                      10.0
+                    ],
+                    "type": "ToPoint"
+                  },
+                  "surface": {
+                    "faceId": "[uuid]",
+                    "id": "[uuid]",
+                    "sourceRange": [
+                      66,
+                      90,
+                      0
+                    ],
+                    "tag": {
+                      "end": 89,
+                      "start": 83,
+                      "type": "TagDeclarator",
+                      "value": "thing"
+                    },
+                    "type": "extrudePlane"
+                  }
+                },
+                "__meta": [
+                  {
+                    "sourceRange": [
+                      83,
+                      89,
+                      0
+                    ]
+                  }
+                ]
+              },
+              "thing1": {
+                "type": "TagIdentifier",
+                "value": "thing1",
+                "info": {
+                  "type": "TagEngineInfo",
+                  "id": "[uuid]",
+                  "sketch": "[uuid]",
+                  "path": {
+                    "__geoMeta": {
+                      "id": "[uuid]",
+                      "sourceRange": [
+                        96,
+                        121,
+                        0
+                      ]
+                    },
+                    "from": [
+                      0.0,
+                      10.0
+                    ],
+                    "tag": {
+                      "end": 120,
+                      "start": 113,
+                      "type": "TagDeclarator",
+                      "value": "thing1"
+                    },
+                    "to": [
+                      10.0,
+                      10.0
+                    ],
+                    "type": "ToPoint"
+                  },
+                  "surface": {
+                    "faceId": "[uuid]",
+                    "id": "[uuid]",
+                    "sourceRange": [
+                      96,
+                      121,
+                      0
+                    ],
+                    "tag": {
+                      "end": 120,
+                      "start": 113,
+                      "type": "TagDeclarator",
+                      "value": "thing1"
+                    },
+                    "type": "extrudePlane"
+                  }
+                },
+                "__meta": [
+                  {
+                    "sourceRange": [
+                      113,
+                      120,
+                      0
+                    ]
+                  }
+                ]
+              },
+              "thing2": {
+                "type": "TagIdentifier",
+                "value": "thing2",
+                "info": {
+                  "type": "TagEngineInfo",
+                  "id": "[uuid]",
+                  "sketch": "[uuid]",
+                  "path": {
+                    "__geoMeta": {
+                      "id": "[uuid]",
+                      "sourceRange": [
+                        127,
+                        153,
+                        0
+                      ]
+                    },
+                    "from": [
+                      10.0,
+                      10.0
+                    ],
+                    "tag": {
+                      "end": 152,
+                      "start": 145,
+                      "type": "TagDeclarator",
+                      "value": "thing2"
+                    },
+                    "to": [
+                      10.0,
+                      0.0
+                    ],
+                    "type": "ToPoint"
+                  },
+                  "surface": {
+                    "faceId": "[uuid]",
+                    "id": "[uuid]",
+                    "sourceRange": [
+                      127,
+                      153,
+                      0
+                    ],
+                    "tag": {
+                      "end": 152,
+                      "start": 145,
+                      "type": "TagDeclarator",
+                      "value": "thing2"
+                    },
+                    "type": "extrudePlane"
+                  }
+                },
+                "__meta": [
+                  {
+                    "sourceRange": [
+                      145,
+                      152,
+                      0
+                    ]
+                  }
+                ]
+              },
+              "thing3": {
+                "type": "TagIdentifier",
+                "value": "thing3",
+                "info": {
+                  "type": "TagEngineInfo",
+                  "id": "[uuid]",
+                  "sketch": "[uuid]",
+                  "path": {
+                    "__geoMeta": {
+                      "id": "[uuid]",
+                      "sourceRange": [
+                        159,
+                        176,
+                        0
+                      ]
+                    },
+                    "from": [
+                      10.0,
+                      0.0
+                    ],
+                    "tag": {
+                      "end": 175,
+                      "start": 168,
+                      "type": "TagDeclarator",
+                      "value": "thing3"
+                    },
+                    "to": [
+                      0.0,
+                      0.0
+                    ],
+                    "type": "ToPoint"
+                  },
+                  "surface": {
+                    "faceId": "[uuid]",
+                    "id": "[uuid]",
+                    "sourceRange": [
+                      159,
+                      176,
+                      0
+                    ],
+                    "tag": {
+                      "end": 175,
+                      "start": 168,
+                      "type": "TagDeclarator",
+                      "value": "thing3"
+                    },
+                    "type": "extrudePlane"
+                  }
+                },
+                "__meta": [
+                  {
+                    "sourceRange": [
+                      168,
+                      175,
+                      0
+                    ]
+                  }
+                ]
+              }
+            },
+            "__meta": [
+              {
+                "sourceRange": [
+                  35,
+                  60,
+                  0
+                ]
+              }
+            ]
+          },
+          "height": 10.0,
+          "startCapId": "[uuid]",
+          "endCapId": "[uuid]",
+          "edgeCuts": [
+            {
+              "type": "fillet",
+              "id": "[uuid]",
+              "radius": 2.0,
+              "edgeId": "[uuid]",
+              "tag": null
+            }
+          ],
+          "__meta": [
+            {
+              "sourceRange": [
+                35,
+                60,
+                0
+              ]
+            }
+          ]
+        },
+        "thing": {
+          "type": "TagIdentifier",
+          "type": "TagIdentifier",
+          "value": "thing",
+          "info": {
+            "type": "TagEngineInfo",
+            "id": "[uuid]",
+            "sketch": "[uuid]",
+            "path": {
+              "__geoMeta": {
+                "id": "[uuid]",
+                "sourceRange": [
+                  66,
+                  90,
+                  0
+                ]
+              },
+              "from": [
+                0.0,
+                0.0
+              ],
+              "tag": {
+                "end": 89,
+                "start": 83,
+                "type": "TagDeclarator",
+                "value": "thing"
+              },
+              "to": [
+                0.0,
+                10.0
+              ],
+              "type": "ToPoint"
+            },
+            "surface": {
+              "faceId": "[uuid]",
+              "id": "[uuid]",
+              "sourceRange": [
+                66,
+                90,
+                0
+              ],
+              "tag": {
+                "end": 89,
+                "start": 83,
+                "type": "TagDeclarator",
+                "value": "thing"
+              },
+              "type": "extrudePlane"
+            }
+          },
+          "__meta": [
+            {
+              "sourceRange": [
+                83,
+                89,
+                0
+              ]
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src/wasm-lib/kcl/tests/basic_fillet_cube_next_adjacent/tokens.snap

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src/wasm-lib/kcl/tests/basic_fillet_cube_previous_adjacent/ast.snap

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+---
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+description: Result of parsing basic_fillet_cube_previous_adjacent.kcl
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+                      "start": 24,
+                      "type": "Literal",
+                      "type": "Literal",
+                      "value": "XY"
+                    }
+                  ],
+                  "callee": {
+                    "end": 23,
+                    "name": "startSketchOn",
+                    "start": 10,
+                    "type": "Identifier"
+                  },
+                  "end": 29,
+                  "optional": false,
+                  "start": 10,
+                  "type": "CallExpression",
+                  "type": "CallExpression"
+                },
+                {
+                  "arguments": [
+                    {
+                      "elements": [
+                        {
+                          "end": 52,
+                          "raw": "0",
+                          "start": 51,
+                          "type": "Literal",
+                          "type": "Literal",
+                          "value": 0
+                        },
+                        {
+                          "end": 55,
+                          "raw": "0",
+                          "start": 54,
+                          "type": "Literal",
+                          "type": "Literal",
+                          "value": 0
+                        }
+                      ],
+                      "end": 56,
+                      "start": 50,
+                      "type": "ArrayExpression",
+                      "type": "ArrayExpression"
+                    },
+                    {
+                      "end": 59,
+                      "start": 58,
+                      "type": "PipeSubstitution",
+                      "type": "PipeSubstitution"
+                    }
+                  ],
+                  "callee": {
+                    "end": 49,
+                    "name": "startProfileAt",
+                    "start": 35,
+                    "type": "Identifier"
+                  },
+                  "end": 60,
+                  "optional": false,
+                  "start": 35,
+                  "type": "CallExpression",
+                  "type": "CallExpression"
+                },
+                {
+                  "arguments": [
+                    {
+                      "elements": [
+                        {
+                          "end": 73,
+                          "raw": "0",
+                          "start": 72,
+                          "type": "Literal",
+                          "type": "Literal",
+                          "value": 0
+                        },
+                        {
+                          "end": 77,
+                          "raw": "10",
+                          "start": 75,
+                          "type": "Literal",
+                          "type": "Literal",
+                          "value": 10
+                        }
+                      ],
+                      "end": 78,
+                      "start": 71,
+                      "type": "ArrayExpression",
+                      "type": "ArrayExpression"
+                    },
+                    {
+                      "end": 81,
+                      "start": 80,
+                      "type": "PipeSubstitution",
+                      "type": "PipeSubstitution"
+                    },
+                    {
+                      "end": 89,
+                      "start": 83,
+                      "type": "TagDeclarator",
+                      "type": "TagDeclarator",
+                      "value": "thing"
+                    }
+                  ],
+                  "callee": {
+                    "end": 70,
+                    "name": "line",
+                    "start": 66,
+                    "type": "Identifier"
+                  },
+                  "end": 90,
+                  "optional": false,
+                  "start": 66,
+                  "type": "CallExpression",
+                  "type": "CallExpression"
+                },
+                {
+                  "arguments": [
+                    {
+                      "elements": [
+                        {
+                          "end": 104,
+                          "raw": "10",
+                          "start": 102,
+                          "type": "Literal",
+                          "type": "Literal",
+                          "value": 10
+                        },
+                        {
+                          "end": 107,
+                          "raw": "0",
+                          "start": 106,
+                          "type": "Literal",
+                          "type": "Literal",
+                          "value": 0
+                        }
+                      ],
+                      "end": 108,
+                      "start": 101,
+                      "type": "ArrayExpression",
+                      "type": "ArrayExpression"
+                    },
+                    {
+                      "end": 111,
+                      "start": 110,
+                      "type": "PipeSubstitution",
+                      "type": "PipeSubstitution"
+                    },
+                    {
+                      "end": 120,
+                      "start": 113,
+                      "type": "TagDeclarator",
+                      "type": "TagDeclarator",
+                      "value": "thing1"
+                    }
+                  ],
+                  "callee": {
+                    "end": 100,
+                    "name": "line",
+                    "start": 96,
+                    "type": "Identifier"
+                  },
+                  "end": 121,
+                  "optional": false,
+                  "start": 96,
+                  "type": "CallExpression",
+                  "type": "CallExpression"
+                },
+                {
+                  "arguments": [
+                    {
+                      "elements": [
+                        {
+                          "end": 134,
+                          "raw": "0",
+                          "start": 133,
+                          "type": "Literal",
+                          "type": "Literal",
+                          "value": 0
+                        },
+                        {
+                          "argument": {
+                            "end": 139,
+                            "raw": "10",
+                            "start": 137,
+                            "type": "Literal",
+                            "type": "Literal",
+                            "value": 10
+                          },
+                          "end": 139,
+                          "operator": "-",
+                          "start": 136,
+                          "type": "UnaryExpression",
+                          "type": "UnaryExpression"
+                        }
+                      ],
+                      "end": 140,
+                      "start": 132,
+                      "type": "ArrayExpression",
+                      "type": "ArrayExpression"
+                    },
+                    {
+                      "end": 143,
+                      "start": 142,
+                      "type": "PipeSubstitution",
+                      "type": "PipeSubstitution"
+                    },
+                    {
+                      "end": 152,
+                      "start": 145,
+                      "type": "TagDeclarator",
+                      "type": "TagDeclarator",
+                      "value": "thing2"
+                    }
+                  ],
+                  "callee": {
+                    "end": 131,
+                    "name": "line",
+                    "start": 127,
+                    "type": "Identifier"
+                  },
+                  "end": 153,
+                  "optional": false,
+                  "start": 127,
+                  "type": "CallExpression",
+                  "type": "CallExpression"
+                },
+                {
+                  "arguments": [
+                    {
+                      "end": 166,
+                      "start": 165,
+                      "type": "PipeSubstitution",
+                      "type": "PipeSubstitution"
+                    },
+                    {
+                      "end": 175,
+                      "start": 168,
+                      "type": "TagDeclarator",
+                      "type": "TagDeclarator",
+                      "value": "thing3"
+                    }
+                  ],
+                  "callee": {
+                    "end": 164,
+                    "name": "close",
+                    "start": 159,
+                    "type": "Identifier"
+                  },
+                  "end": 176,
+                  "optional": false,
+                  "start": 159,
+                  "type": "CallExpression",
+                  "type": "CallExpression"
+                },
+                {
+                  "arguments": [
+                    {
+                      "end": 192,
+                      "raw": "10",
+                      "start": 190,
+                      "type": "Literal",
+                      "type": "Literal",
+                      "value": 10
+                    },
+                    {
+                      "end": 195,
+                      "start": 194,
+                      "type": "PipeSubstitution",
+                      "type": "PipeSubstitution"
+                    }
+                  ],
+                  "callee": {
+                    "end": 189,
+                    "name": "extrude",
+                    "start": 182,
+                    "type": "Identifier"
+                  },
+                  "end": 196,
+                  "optional": false,
+                  "start": 182,
+                  "type": "CallExpression",
+                  "type": "CallExpression"
+                },
+                {
+                  "arguments": [
+                    {
+                      "end": 282,
+                      "properties": [
+                        {
+                          "end": 227,
+                          "key": {
+                            "end": 224,
+                            "name": "radius",
+                            "start": 218,
+                            "type": "Identifier"
+                          },
+                          "start": 218,
+                          "type": "ObjectProperty",
+                          "value": {
+                            "end": 227,
+                            "raw": "2",
+                            "start": 226,
+                            "type": "Literal",
+                            "type": "Literal",
+                            "value": 2
+                          }
+                        },
+                        {
+                          "end": 275,
+                          "key": {
+                            "end": 240,
+                            "name": "tags",
+                            "start": 236,
+                            "type": "Identifier"
+                          },
+                          "start": 236,
+                          "type": "ObjectProperty",
+                          "value": {
+                            "elements": [
+                              {
+                                "arguments": [
+                                  {
+                                    "end": 273,
+                                    "name": "thing3",
+                                    "start": 267,
+                                    "type": "Identifier",
+                                    "type": "Identifier"
+                                  }
+                                ],
+                                "callee": {
+                                  "end": 266,
+                                  "name": "getPreviousAdjacentEdge",
+                                  "start": 243,
+                                  "type": "Identifier"
+                                },
+                                "end": 274,
+                                "optional": false,
+                                "start": 243,
+                                "type": "CallExpression",
+                                "type": "CallExpression"
+                              }
+                            ],
+                            "end": 275,
+                            "start": 242,
+                            "type": "ArrayExpression",
+                            "type": "ArrayExpression"
+                          }
+                        }
+                      ],
+                      "start": 209,
+                      "type": "ObjectExpression",
+                      "type": "ObjectExpression"
+                    },
+                    {
+                      "end": 285,
+                      "start": 284,
+                      "type": "PipeSubstitution",
+                      "type": "PipeSubstitution"
+                    }
+                  ],
+                  "callee": {
+                    "end": 208,
+                    "name": "fillet",
+                    "start": 202,
+                    "type": "Identifier"
+                  },
+                  "end": 286,
+                  "optional": false,
+                  "start": 202,
+                  "type": "CallExpression",
+                  "type": "CallExpression"
+                }
+              ],
+              "end": 286,
+              "start": 10,
+              "type": "PipeExpression",
+              "type": "PipeExpression"
+            },
+            "start": 0,
+            "type": "VariableDeclarator"
+          }
+        ],
+        "end": 286,
+        "kind": "const",
+        "start": 0,
+        "type": "VariableDeclaration",
+        "type": "VariableDeclaration"
+      }
+    ],
+    "end": 287,
+    "start": 0
+  }
+}

src/wasm-lib/kcl/tests/basic_fillet_cube_previous_adjacent/input.kcl

@@ -0,0 +1,11 @@
+part001 = startSketchOn('XY')
+  |> startProfileAt([0, 0], %)
+  |> line([0, 10], %, $thing)
+  |> line([10, 0], %, $thing1)
+  |> line([0, -10], %, $thing2)
+  |> close(%, $thing3)
+  |> extrude(10, %)
+  |> fillet({
+       radius: 2,
+       tags: [getPreviousAdjacentEdge(thing3)]
+     }, %)

src/wasm-lib/kcl/tests/basic_fillet_cube_previous_adjacent/program_memory.snap

@@ -0,0 +1,766 @@
+---
+source: kcl/src/simulation_tests.rs
+description: Program memory after executing basic_fillet_cube_previous_adjacent.kcl
+snapshot_kind: text
+---
+{
+  "environments": [
+    {
+      "bindings": {
+        "HALF_TURN": {
+          "type": "Number",
+          "value": 180.0,
+          "__meta": []
+        },
+        "QUARTER_TURN": {
+          "type": "Number",
+          "value": 90.0,
+          "__meta": []
+        },
+        "THREE_QUARTER_TURN": {
+          "type": "Number",
+          "value": 270.0,
+          "__meta": []
+        },
+        "ZERO": {
+          "type": "Number",
+          "value": 0.0,
+          "__meta": []
+        },
+        "part001": {
+          "type": "Solid",
+          "type": "Solid",
+          "id": "[uuid]",
+          "value": [
+            {
+              "faceId": "[uuid]",
+              "id": "[uuid]",
+              "sourceRange": [
+                66,
+                90,
+                0
+              ],
+              "tag": {
+                "end": 89,
+                "start": 83,
+                "type": "TagDeclarator",
+                "value": "thing"
+              },
+              "type": "extrudePlane"
+            },
+            {
+              "faceId": "[uuid]",
+              "id": "[uuid]",
+              "sourceRange": [
+                96,
+                121,
+                0
+              ],
+              "tag": {
+                "end": 120,
+                "start": 113,
+                "type": "TagDeclarator",
+                "value": "thing1"
+              },
+              "type": "extrudePlane"
+            },
+            {
+              "faceId": "[uuid]",
+              "id": "[uuid]",
+              "sourceRange": [
+                127,
+                153,
+                0
+              ],
+              "tag": {
+                "end": 152,
+                "start": 145,
+                "type": "TagDeclarator",
+                "value": "thing2"
+              },
+              "type": "extrudePlane"
+            },
+            {
+              "faceId": "[uuid]",
+              "id": "[uuid]",
+              "sourceRange": [
+                159,
+                176,
+                0
+              ],
+              "tag": {
+                "end": 175,
+                "start": 168,
+                "type": "TagDeclarator",
+                "value": "thing3"
+              },
+              "type": "extrudePlane"
+            }
+          ],
+          "sketch": {
+            "type": "Sketch",
+            "id": "[uuid]",
+            "paths": [
+              {
+                "__geoMeta": {
+                  "id": "[uuid]",
+                  "sourceRange": [
+                    66,
+                    90,
+                    0
+                  ]
+                },
+                "from": [
+                  0.0,
+                  0.0
+                ],
+                "tag": {
+                  "end": 89,
+                  "start": 83,
+                  "type": "TagDeclarator",
+                  "value": "thing"
+                },
+                "to": [
+                  0.0,
+                  10.0
+                ],
+                "type": "ToPoint"
+              },
+              {
+                "__geoMeta": {
+                  "id": "[uuid]",
+                  "sourceRange": [
+                    96,
+                    121,
+                    0
+                  ]
+                },
+                "from": [
+                  0.0,
+                  10.0
+                ],
+                "tag": {
+                  "end": 120,
+                  "start": 113,
+                  "type": "TagDeclarator",
+                  "value": "thing1"
+                },
+                "to": [
+                  10.0,
+                  10.0
+                ],
+                "type": "ToPoint"
+              },
+              {
+                "__geoMeta": {
+                  "id": "[uuid]",
+                  "sourceRange": [
+                    127,
+                    153,
+                    0
+                  ]
+                },
+                "from": [
+                  10.0,
+                  10.0
+                ],
+                "tag": {
+                  "end": 152,
+                  "start": 145,
+                  "type": "TagDeclarator",
+                  "value": "thing2"
+                },
+                "to": [
+                  10.0,
+                  0.0
+                ],
+                "type": "ToPoint"
+              },
+              {
+                "__geoMeta": {
+                  "id": "[uuid]",
+                  "sourceRange": [
+                    159,
+                    176,
+                    0
+                  ]
+                },
+                "from": [
+                  10.0,
+                  0.0
+                ],
+                "tag": {
+                  "end": 175,
+                  "start": 168,
+                  "type": "TagDeclarator",
+                  "value": "thing3"
+                },
+                "to": [
+                  0.0,
+                  0.0
+                ],
+                "type": "ToPoint"
+              }
+            ],
+            "on": {
+              "type": "plane",
+              "id": "[uuid]",
+              "value": "XY",
+              "origin": {
+                "x": 0.0,
+                "y": 0.0,
+                "z": 0.0
+              },
+              "xAxis": {
+                "x": 1.0,
+                "y": 0.0,
+                "z": 0.0
+              },
+              "yAxis": {
+                "x": 0.0,
+                "y": 1.0,
+                "z": 0.0
+              },
+              "zAxis": {
+                "x": 0.0,
+                "y": 0.0,
+                "z": 1.0
+              },
+              "__meta": []
+            },
+            "start": {
+              "from": [
+                0.0,
+                0.0
+              ],
+              "to": [
+                0.0,
+                0.0
+              ],
+              "tag": null,
+              "__geoMeta": {
+                "id": "[uuid]",
+                "sourceRange": [
+                  35,
+                  60,
+                  0
+                ]
+              }
+            },
+            "tags": {
+              "thing": {
+                "type": "TagIdentifier",
+                "value": "thing",
+                "info": {
+                  "type": "TagEngineInfo",
+                  "id": "[uuid]",
+                  "sketch": "[uuid]",
+                  "path": {
+                    "__geoMeta": {
+                      "id": "[uuid]",
+                      "sourceRange": [
+                        66,
+                        90,
+                        0
+                      ]
+                    },
+                    "from": [
+                      0.0,
+                      0.0
+                    ],
+                    "tag": {
+                      "end": 89,
+                      "start": 83,
+                      "type": "TagDeclarator",
+                      "value": "thing"
+                    },
+                    "to": [
+                      0.0,
+                      10.0
+                    ],
+                    "type": "ToPoint"
+                  },
+                  "surface": {
+                    "faceId": "[uuid]",
+                    "id": "[uuid]",
+                    "sourceRange": [
+                      66,
+                      90,
+                      0
+                    ],
+                    "tag": {
+                      "end": 89,
+                      "start": 83,
+                      "type": "TagDeclarator",
+                      "value": "thing"
+                    },
+                    "type": "extrudePlane"
+                  }
+                },
+                "__meta": [
+                  {
+                    "sourceRange": [
+                      83,
+                      89,
+                      0
+                    ]
+                  }
+                ]
+              },
+              "thing1": {
+                "type": "TagIdentifier",
+                "value": "thing1",
+                "info": {
+                  "type": "TagEngineInfo",
+                  "id": "[uuid]",
+                  "sketch": "[uuid]",
+                  "path": {
+                    "__geoMeta": {
+                      "id": "[uuid]",
+                      "sourceRange": [
+                        96,
+                        121,
+                        0
+                      ]
+                    },
+                    "from": [
+                      0.0,
+                      10.0
+                    ],
+                    "tag": {
+                      "end": 120,
+                      "start": 113,
+                      "type": "TagDeclarator",
+                      "value": "thing1"
+                    },
+                    "to": [
+                      10.0,
+                      10.0
+                    ],
+                    "type": "ToPoint"
+                  },
+                  "surface": {
+                    "faceId": "[uuid]",
+                    "id": "[uuid]",
+                    "sourceRange": [
+                      96,
+                      121,
+                      0
+                    ],
+                    "tag": {
+                      "end": 120,
+                      "start": 113,
+                      "type": "TagDeclarator",
+                      "value": "thing1"
+                    },
+                    "type": "extrudePlane"
+                  }
+                },
+                "__meta": [
+                  {
+                    "sourceRange": [
+                      113,
+                      120,
+                      0
+                    ]
+                  }
+                ]
+              },
+              "thing2": {
+                "type": "TagIdentifier",
+                "value": "thing2",
+                "info": {
+                  "type": "TagEngineInfo",
+                  "id": "[uuid]",
+                  "sketch": "[uuid]",
+                  "path": {
+                    "__geoMeta": {
+                      "id": "[uuid]",
+                      "sourceRange": [
+                        127,
+                        153,
+                        0
+                      ]
+                    },
+                    "from": [
+                      10.0,
+                      10.0
+                    ],
+                    "tag": {
+                      "end": 152,
+                      "start": 145,
+                      "type": "TagDeclarator",
+                      "value": "thing2"
+                    },
+                    "to": [
+                      10.0,
+                      0.0
+                    ],
+                    "type": "ToPoint"
+                  },
+                  "surface": {
+                    "faceId": "[uuid]",
+                    "id": "[uuid]",
+                    "sourceRange": [
+                      127,
+                      153,
+                      0
+                    ],
+                    "tag": {
+                      "end": 152,
+                      "start": 145,
+                      "type": "TagDeclarator",
+                      "value": "thing2"
+                    },
+                    "type": "extrudePlane"
+                  }
+                },
+                "__meta": [
+                  {
+                    "sourceRange": [
+                      145,
+                      152,
+                      0
+                    ]
+                  }
+                ]
+              },
+              "thing3": {
+                "type": "TagIdentifier",
+                "value": "thing3",
+                "info": {
+                  "type": "TagEngineInfo",
+                  "id": "[uuid]",
+                  "sketch": "[uuid]",
+                  "path": {
+                    "__geoMeta": {
+                      "id": "[uuid]",
+                      "sourceRange": [
+                        159,
+                        176,
+                        0
+                      ]
+                    },
+                    "from": [
+                      10.0,
+                      0.0
+                    ],
+                    "tag": {
+                      "end": 175,
+                      "start": 168,
+                      "type": "TagDeclarator",
+                      "value": "thing3"
+                    },
+                    "to": [
+                      0.0,
+                      0.0
+                    ],
+                    "type": "ToPoint"
+                  },
+                  "surface": {
+                    "faceId": "[uuid]",
+                    "id": "[uuid]",
+                    "sourceRange": [
+                      159,
+                      176,
+                      0
+                    ],
+                    "tag": {
+                      "end": 175,
+                      "start": 168,
+                      "type": "TagDeclarator",
+                      "value": "thing3"
+                    },
+                    "type": "extrudePlane"
+                  }
+                },
+                "__meta": [
+                  {
+                    "sourceRange": [
+                      168,
+                      175,
+                      0
+                    ]
+                  }
+                ]
+              }
+            },
+            "__meta": [
+              {
+                "sourceRange": [
+                  35,
+                  60,
+                  0
+                ]
+              }
+            ]
+          },
+          "height": 10.0,
+          "startCapId": "[uuid]",
+          "endCapId": "[uuid]",
+          "edgeCuts": [
+            {
+              "type": "fillet",
+              "id": "[uuid]",
+              "radius": 2.0,
+              "edgeId": "[uuid]",
+              "tag": null
+            }
+          ],
+          "__meta": [
+            {
+              "sourceRange": [
+                35,
+                60,
+                0
+              ]
+            }
+          ]
+        },
+        "thing": {
+          "type": "TagIdentifier",
+          "type": "TagIdentifier",
+          "value": "thing",
+          "info": {
+            "type": "TagEngineInfo",
+            "id": "[uuid]",
+            "sketch": "[uuid]",
+            "path": {
+              "__geoMeta": {
+                "id": "[uuid]",
+                "sourceRange": [
+                  66,
+                  90,
+                  0
+                ]
+              },
+              "from": [
+                0.0,
+                0.0
+              ],
+              "tag": {
+                "end": 89,
+                "start": 83,
+                "type": "TagDeclarator",
+                "value": "thing"
+              },
+              "to": [
+                0.0,
+                10.0
+              ],
+              "type": "ToPoint"
+            },
+            "surface": {
+              "faceId": "[uuid]",
+              "id": "[uuid]",
+              "sourceRange": [
+                66,
+                90,
+                0
+              ],
+              "tag": {
+                "end": 89,
+                "start": 83,
+                "type": "TagDeclarator",
+                "value": "thing"
+              },
+              "type": "extrudePlane"
+            }
+          },
+          "__meta": [
+            {
+              "sourceRange": [
+                83,
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+}

src/wasm-lib/kcl/tests/basic_fillet_cube_previous_adjacent/tokens.snap

@@ -0,0 +1,795 @@
+---
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+}

src/wasm-lib/kcl/tests/basic_fillet_cube_start/ast.snap

@@ -0,0 +1,396 @@
+---
+source: kcl/src/simulation_tests.rs
+description: Result of parsing basic_fillet_cube_start.kcl
+snapshot_kind: text
+---
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+                      "raw": "'XY'",
+                      "start": 24,
+                      "type": "Literal",
+                      "type": "Literal",
+                      "value": "XY"
+                    }
+                  ],
+                  "callee": {
+                    "end": 23,
+                    "name": "startSketchOn",
+                    "start": 10,
+                    "type": "Identifier"
+                  },
+                  "end": 29,
+                  "optional": false,
+                  "start": 10,
+                  "type": "CallExpression",
+                  "type": "CallExpression"
+                },
+                {
+                  "arguments": [
+                    {
+                      "elements": [
+                        {
+                          "end": 52,
+                          "raw": "0",
+                          "start": 51,
+                          "type": "Literal",
+                          "type": "Literal",
+                          "value": 0
+                        },
+                        {
+                          "end": 55,
+                          "raw": "0",
+                          "start": 54,
+                          "type": "Literal",
+                          "type": "Literal",
+                          "value": 0
+                        }
+                      ],
+                      "end": 56,
+                      "start": 50,
+                      "type": "ArrayExpression",
+                      "type": "ArrayExpression"
+                    },
+                    {
+                      "end": 59,
+                      "start": 58,
+                      "type": "PipeSubstitution",
+                      "type": "PipeSubstitution"
+                    }
+                  ],
+                  "callee": {
+                    "end": 49,
+                    "name": "startProfileAt",
+                    "start": 35,
+                    "type": "Identifier"
+                  },
+                  "end": 60,
+                  "optional": false,
+                  "start": 35,
+                  "type": "CallExpression",
+                  "type": "CallExpression"
+                },
+                {
+                  "arguments": [
+                    {
+                      "elements": [
+                        {
+                          "end": 73,
+                          "raw": "0",
+                          "start": 72,
+                          "type": "Literal",
+                          "type": "Literal",
+                          "value": 0
+                        },
+                        {
+                          "end": 77,
+                          "raw": "10",
+                          "start": 75,
+                          "type": "Literal",
+                          "type": "Literal",
+                          "value": 10
+                        }
+                      ],
+                      "end": 78,
+                      "start": 71,
+                      "type": "ArrayExpression",
+                      "type": "ArrayExpression"
+                    },
+                    {
+                      "end": 81,
+                      "start": 80,
+                      "type": "PipeSubstitution",
+                      "type": "PipeSubstitution"
+                    },
+                    {
+                      "end": 89,
+                      "start": 83,
+                      "type": "TagDeclarator",
+                      "type": "TagDeclarator",
+                      "value": "thing"
+                    }
+                  ],
+                  "callee": {
+                    "end": 70,
+                    "name": "line",
+                    "start": 66,
+                    "type": "Identifier"
+                  },
+                  "end": 90,
+                  "optional": false,
+                  "start": 66,
+                  "type": "CallExpression",
+                  "type": "CallExpression"
+                },
+                {
+                  "arguments": [
+                    {
+                      "elements": [
+                        {
+                          "end": 104,
+                          "raw": "10",
+                          "start": 102,
+                          "type": "Literal",
+                          "type": "Literal",
+                          "value": 10
+                        },
+                        {
+                          "end": 107,
+                          "raw": "0",
+                          "start": 106,
+                          "type": "Literal",
+                          "type": "Literal",
+                          "value": 0
+                        }
+                      ],
+                      "end": 108,
+                      "start": 101,
+                      "type": "ArrayExpression",
+                      "type": "ArrayExpression"
+                    },
+                    {
+                      "end": 111,
+                      "start": 110,
+                      "type": "PipeSubstitution",
+                      "type": "PipeSubstitution"
+                    }
+                  ],
+                  "callee": {
+                    "end": 100,
+                    "name": "line",
+                    "start": 96,
+                    "type": "Identifier"
+                  },
+                  "end": 112,
+                  "optional": false,
+                  "start": 96,
+                  "type": "CallExpression",
+                  "type": "CallExpression"
+                },
+                {
+                  "arguments": [
+                    {
+                      "elements": [
+                        {
+                          "end": 125,
+                          "raw": "0",
+                          "start": 124,
+                          "type": "Literal",
+                          "type": "Literal",
+                          "value": 0
+                        },
+                        {
+                          "argument": {
+                            "end": 130,
+                            "raw": "10",
+                            "start": 128,
+                            "type": "Literal",
+                            "type": "Literal",
+                            "value": 10
+                          },
+                          "end": 130,
+                          "operator": "-",
+                          "start": 127,
+                          "type": "UnaryExpression",
+                          "type": "UnaryExpression"
+                        }
+                      ],
+                      "end": 131,
+                      "start": 123,
+                      "type": "ArrayExpression",
+                      "type": "ArrayExpression"
+                    },
+                    {
+                      "end": 134,
+                      "start": 133,
+                      "type": "PipeSubstitution",
+                      "type": "PipeSubstitution"
+                    },
+                    {
+                      "end": 143,
+                      "start": 136,
+                      "type": "TagDeclarator",
+                      "type": "TagDeclarator",
+                      "value": "thing2"
+                    }
+                  ],
+                  "callee": {
+                    "end": 122,
+                    "name": "line",
+                    "start": 118,
+                    "type": "Identifier"
+                  },
+                  "end": 144,
+                  "optional": false,
+                  "start": 118,
+                  "type": "CallExpression",
+                  "type": "CallExpression"
+                },
+                {
+                  "arguments": [
+                    {
+                      "end": 157,
+                      "start": 156,
+                      "type": "PipeSubstitution",
+                      "type": "PipeSubstitution"
+                    }
+                  ],
+                  "callee": {
+                    "end": 155,
+                    "name": "close",
+                    "start": 150,
+                    "type": "Identifier"
+                  },
+                  "end": 158,
+                  "optional": false,
+                  "start": 150,
+                  "type": "CallExpression",
+                  "type": "CallExpression"
+                },
+                {
+                  "arguments": [
+                    {
+                      "end": 174,
+                      "raw": "10",
+                      "start": 172,
+                      "type": "Literal",
+                      "type": "Literal",
+                      "value": 10
+                    },
+                    {
+                      "end": 177,
+                      "start": 176,
+                      "type": "PipeSubstitution",
+                      "type": "PipeSubstitution"
+                    }
+                  ],
+                  "callee": {
+                    "end": 171,
+                    "name": "extrude",
+                    "start": 164,
+                    "type": "Identifier"
+                  },
+                  "end": 178,
+                  "optional": false,
+                  "start": 164,
+                  "type": "CallExpression",
+                  "type": "CallExpression"
+                },
+                {
+                  "arguments": [
+                    {
+                      "end": 227,
+                      "properties": [
+                        {
+                          "end": 202,
+                          "key": {
+                            "end": 199,
+                            "name": "radius",
+                            "start": 193,
+                            "type": "Identifier"
+                          },
+                          "start": 193,
+                          "type": "ObjectProperty",
+                          "value": {
+                            "end": 202,
+                            "raw": "2",
+                            "start": 201,
+                            "type": "Literal",
+                            "type": "Literal",
+                            "value": 2
+                          }
+                        },
+                        {
+                          "end": 225,
+                          "key": {
+                            "end": 208,
+                            "name": "tags",
+                            "start": 204,
+                            "type": "Identifier"
+                          },
+                          "start": 204,
+                          "type": "ObjectProperty",
+                          "value": {
+                            "elements": [
+                              {
+                                "end": 216,
+                                "name": "thing",
+                                "start": 211,
+                                "type": "Identifier",
+                                "type": "Identifier"
+                              },
+                              {
+                                "end": 224,
+                                "name": "thing2",
+                                "start": 218,
+                                "type": "Identifier",
+                                "type": "Identifier"
+                              }
+                            ],
+                            "end": 225,
+                            "start": 210,
+                            "type": "ArrayExpression",
+                            "type": "ArrayExpression"
+                          }
+                        }
+                      ],
+                      "start": 191,
+                      "type": "ObjectExpression",
+                      "type": "ObjectExpression"
+                    },
+                    {
+                      "end": 230,
+                      "start": 229,
+                      "type": "PipeSubstitution",
+                      "type": "PipeSubstitution"
+                    }
+                  ],
+                  "callee": {
+                    "end": 190,
+                    "name": "fillet",
+                    "start": 184,
+                    "type": "Identifier"
+                  },
+                  "end": 231,
+                  "optional": false,
+                  "start": 184,
+                  "type": "CallExpression",
+                  "type": "CallExpression"
+                }
+              ],
+              "end": 231,
+              "start": 10,
+              "type": "PipeExpression",
+              "type": "PipeExpression"
+            },
+            "start": 0,
+            "type": "VariableDeclarator"
+          }
+        ],
+        "end": 231,
+        "kind": "const",
+        "start": 0,
+        "type": "VariableDeclaration",
+        "type": "VariableDeclaration"
+      }
+    ],
+    "end": 232,
+    "start": 0
+  }
+}

src/wasm-lib/kcl/tests/basic_fillet_cube_start/input.kcl

@@ -0,0 +1,8 @@
+part001 = startSketchOn('XY')
+  |> startProfileAt([0, 0], %)
+  |> line([0, 10], %, $thing)
+  |> line([10, 0], %)
+  |> line([0, -10], %, $thing2)
+  |> close(%)
+  |> extrude(10, %)
+  |> fillet({ radius: 2, tags: [thing, thing2] }, %)

src/wasm-lib/kcl/tests/basic_fillet_cube_start/program_memory.snap

@@ -0,0 +1,515 @@
+---
+source: kcl/src/simulation_tests.rs
+description: Program memory after executing basic_fillet_cube_start.kcl
+snapshot_kind: text
+---
+{
+  "environments": [
+    {
+      "bindings": {
+        "HALF_TURN": {
+          "type": "Number",
+          "value": 180.0,
+          "__meta": []
+        },
+        "QUARTER_TURN": {
+          "type": "Number",
+          "value": 90.0,
+          "__meta": []
+        },
+        "THREE_QUARTER_TURN": {
+          "type": "Number",
+          "value": 270.0,
+          "__meta": []
+        },
+        "ZERO": {
+          "type": "Number",
+          "value": 0.0,
+          "__meta": []
+        },
+        "part001": {
+          "type": "Solid",
+          "type": "Solid",
+          "id": "[uuid]",
+          "value": [
+            {
+              "faceId": "[uuid]",
+              "id": "[uuid]",
+              "sourceRange": [
+                66,
+                90,
+                0
+              ],
+              "tag": {
+                "end": 89,
+                "start": 83,
+                "type": "TagDeclarator",
+                "value": "thing"
+              },
+              "type": "extrudePlane"
+            },
+            {
+              "faceId": "[uuid]",
+              "id": "[uuid]",
+              "sourceRange": [
+                96,
+                112,
+                0
+              ],
+              "tag": null,
+              "type": "extrudePlane"
+            },
+            {
+              "faceId": "[uuid]",
+              "id": "[uuid]",
+              "sourceRange": [
+                118,
+                144,
+                0
+              ],
+              "tag": {
+                "end": 143,
+                "start": 136,
+                "type": "TagDeclarator",
+                "value": "thing2"
+              },
+              "type": "extrudePlane"
+            },
+            {
+              "faceId": "[uuid]",
+              "id": "[uuid]",
+              "sourceRange": [
+                150,
+                158,
+                0
+              ],
+              "tag": null,
+              "type": "extrudePlane"
+            }
+          ],
+          "sketch": {
+            "type": "Sketch",
+            "id": "[uuid]",
+            "paths": [
+              {
+                "__geoMeta": {
+                  "id": "[uuid]",
+                  "sourceRange": [
+                    66,
+                    90,
+                    0
+                  ]
+                },
+                "from": [
+                  0.0,
+                  0.0
+                ],
+                "tag": {
+                  "end": 89,
+                  "start": 83,
+                  "type": "TagDeclarator",
+                  "value": "thing"
+                },
+                "to": [
+                  0.0,
+                  10.0
+                ],
+                "type": "ToPoint"
+              },
+              {
+                "__geoMeta": {
+                  "id": "[uuid]",
+                  "sourceRange": [
+                    96,
+                    112,
+                    0
+                  ]
+                },
+                "from": [
+                  0.0,
+                  10.0
+                ],
+                "tag": null,
+                "to": [
+                  10.0,
+                  10.0
+                ],
+                "type": "ToPoint"
+              },
+              {
+                "__geoMeta": {
+                  "id": "[uuid]",
+                  "sourceRange": [
+                    118,
+                    144,
+                    0
+                  ]
+                },
+                "from": [
+                  10.0,
+                  10.0
+                ],
+                "tag": {
+                  "end": 143,
+                  "start": 136,
+                  "type": "TagDeclarator",
+                  "value": "thing2"
+                },
+                "to": [
+                  10.0,
+                  0.0
+                ],
+                "type": "ToPoint"
+              },
+              {
+                "__geoMeta": {
+                  "id": "[uuid]",
+                  "sourceRange": [
+                    150,
+                    158,
+                    0
+                  ]
+                },
+                "from": [
+                  10.0,
+                  0.0
+                ],
+                "tag": null,
+                "to": [
+                  0.0,
+                  0.0
+                ],
+                "type": "ToPoint"
+              }
+            ],
+            "on": {
+              "type": "plane",
+              "id": "[uuid]",
+              "value": "XY",
+              "origin": {
+                "x": 0.0,
+                "y": 0.0,
+                "z": 0.0
+              },
+              "xAxis": {
+                "x": 1.0,
+                "y": 0.0,
+                "z": 0.0
+              },
+              "yAxis": {
+                "x": 0.0,
+                "y": 1.0,
+                "z": 0.0
+              },
+              "zAxis": {
+                "x": 0.0,
+                "y": 0.0,
+                "z": 1.0
+              },
+              "__meta": []
+            },
+            "start": {
+              "from": [
+                0.0,
+                0.0
+              ],
+              "to": [
+                0.0,
+                0.0
+              ],
+              "tag": null,
+              "__geoMeta": {
+                "id": "[uuid]",
+                "sourceRange": [
+                  35,
+                  60,
+                  0
+                ]
+              }
+            },
+            "tags": {
+              "thing": {
+                "type": "TagIdentifier",
+                "value": "thing",
+                "info": {
+                  "type": "TagEngineInfo",
+                  "id": "[uuid]",
+                  "sketch": "[uuid]",
+                  "path": {
+                    "__geoMeta": {
+                      "id": "[uuid]",
+                      "sourceRange": [
+                        66,
+                        90,
+                        0
+                      ]
+                    },
+                    "from": [
+                      0.0,
+                      0.0
+                    ],
+                    "tag": {
+                      "end": 89,
+                      "start": 83,
+                      "type": "TagDeclarator",
+                      "value": "thing"
+                    },
+                    "to": [
+                      0.0,
+                      10.0
+                    ],
+                    "type": "ToPoint"
+                  },
+                  "surface": {
+                    "faceId": "[uuid]",
+                    "id": "[uuid]",
+                    "sourceRange": [
+                      66,
+                      90,
+                      0
+                    ],
+                    "tag": {
+                      "end": 89,
+                      "start": 83,
+                      "type": "TagDeclarator",
+                      "value": "thing"
+                    },
+                    "type": "extrudePlane"
+                  }
+                },
+                "__meta": [
+                  {
+                    "sourceRange": [
+                      83,
+                      89,
+                      0
+                    ]
+                  }
+                ]
+              },
+              "thing2": {
+                "type": "TagIdentifier",
+                "value": "thing2",
+                "info": {
+                  "type": "TagEngineInfo",
+                  "id": "[uuid]",
+                  "sketch": "[uuid]",
+                  "path": {
+                    "__geoMeta": {
+                      "id": "[uuid]",
+                      "sourceRange": [
+                        118,
+                        144,
+                        0
+                      ]
+                    },
+                    "from": [
+                      10.0,
+                      10.0
+                    ],
+                    "tag": {
+                      "end": 143,
+                      "start": 136,
+                      "type": "TagDeclarator",
+                      "value": "thing2"
+                    },
+                    "to": [
+                      10.0,
+                      0.0
+                    ],
+                    "type": "ToPoint"
+                  },
+                  "surface": {
+                    "faceId": "[uuid]",
+                    "id": "[uuid]",
+                    "sourceRange": [
+                      118,
+                      144,
+                      0
+                    ],
+                    "tag": {
+                      "end": 143,
+                      "start": 136,
+                      "type": "TagDeclarator",
+                      "value": "thing2"
+                    },
+                    "type": "extrudePlane"
+                  }
+                },
+                "__meta": [
+                  {
+                    "sourceRange": [
+                      136,
+                      143,
+                      0
+                    ]
+                  }
+                ]
+              }
+            },
+            "__meta": [
+              {
+                "sourceRange": [
+                  35,
+                  60,
+                  0
+                ]
+              }
+            ]
+          },
+          "height": 10.0,
+          "startCapId": "[uuid]",
+          "endCapId": "[uuid]",
+          "edgeCuts": [
+            {
+              "type": "fillet",
+              "id": "[uuid]",
+              "radius": 2.0,
+              "edgeId": "[uuid]",
+              "tag": null
+            },
+            {
+              "type": "fillet",
+              "id": "[uuid]",
+              "radius": 2.0,
+              "edgeId": "[uuid]",
+              "tag": null
+            }
+          ],
+          "__meta": [
+            {
+              "sourceRange": [
+                35,
+                60,
+                0
+              ]
+            }
+          ]
+        },
+        "thing": {
+          "type": "TagIdentifier",
+          "type": "TagIdentifier",
+          "value": "thing",
+          "info": {
+            "type": "TagEngineInfo",
+            "id": "[uuid]",
+            "sketch": "[uuid]",
+            "path": {
+              "__geoMeta": {
+                "id": "[uuid]",
+                "sourceRange": [
+                  66,
+                  90,
+                  0
+                ]
+              },
+              "from": [
+                0.0,
+                0.0
+              ],
+              "tag": {
+                "end": 89,
+                "start": 83,
+                "type": "TagDeclarator",
+                "value": "thing"
+              },
+              "to": [
+                0.0,
+                10.0
+              ],
+              "type": "ToPoint"
+            },
+            "surface": {
+              "faceId": "[uuid]",
+              "id": "[uuid]",
+              "sourceRange": [
+                66,
+                90,
+                0
+              ],
+              "tag": {
+                "end": 89,
+                "start": 83,
+                "type": "TagDeclarator",
+                "value": "thing"
+              },
+              "type": "extrudePlane"
+            }
+          },
+          "__meta": [
+            {
+              "sourceRange": [
+                83,
+                89,
+                0
+              ]
+            }
+          ]
+        },
+        "thing2": {
+          "type": "TagIdentifier",
+          "type": "TagIdentifier",
+          "value": "thing2",
+          "info": {
+            "type": "TagEngineInfo",
+            "id": "[uuid]",
+            "sketch": "[uuid]",
+            "path": {
+              "__geoMeta": {
+                "id": "[uuid]",
+                "sourceRange": [
+                  118,
+                  144,
+                  0
+                ]
+              },
+              "from": [
+                10.0,
+                10.0
+              ],
+              "tag": {
+                "end": 143,
+                "start": 136,
+                "type": "TagDeclarator",
+                "value": "thing2"
+              },
+              "to": [
+                10.0,
+                0.0
+              ],
+              "type": "ToPoint"
+            },
+            "surface": {
+              "faceId": "[uuid]",
+              "id": "[uuid]",
+              "sourceRange": [
+                118,
+                144,
+                0
+              ],
+              "tag": {
+                "end": 143,
+                "start": 136,
+                "type": "TagDeclarator",
+                "value": "thing2"
+              },
+              "type": "extrudePlane"
+            }
+          },
+          "__meta": [
+            {
+              "sourceRange": [
+                136,
+                143,
+                0
+              ]
+            }
+          ]
+        }
+      },
+      "parent": null
+    }
+  ],
+  "currentEnv": 0,
+  "return": null
+}

src/wasm-lib/kcl/tests/basic_fillet_cube_start/tokens.snap

@@ -0,0 +1,747 @@
+---
+source: kcl/src/simulation_tests.rs
+description: Result of tokenizing basic_fillet_cube_start.kcl
+snapshot_kind: text
+---
+{
+  "Ok": [
+    {
+      "type": "word",
+      "start": 0,
+      "end": 7,
+      "value": "part001"
+    },
+    {
+      "type": "whitespace",
+      "start": 7,
+      "end": 8,
+      "value": " "
+    },
+    {
+      "type": "operator",
+      "start": 8,
+      "end": 9,
+      "value": "="
+    },
+    {
+      "type": "whitespace",
+      "start": 9,
+      "end": 10,
+      "value": " "
+    },
+    {
+      "type": "word",
+      "start": 10,
+      "end": 23,
+      "value": "startSketchOn"
+    },
+    {
+      "type": "brace",
+      "start": 23,
+      "end": 24,
+      "value": "("
+    },
+    {
+      "type": "string",
+      "start": 24,
+      "end": 28,
+      "value": "'XY'"
+    },
+    {
+      "type": "brace",
+      "start": 28,
+      "end": 29,
+      "value": ")"
+    },
+    {
+      "type": "whitespace",
+      "start": 29,
+      "end": 32,
+      "value": "\n  "
+    },
+    {
+      "type": "operator",
+      "start": 32,
+      "end": 34,
+      "value": "|>"
+    },
+    {
+      "type": "whitespace",
+      "start": 34,
+      "end": 35,
+      "value": " "
+    },
+    {
+      "type": "word",
+      "start": 35,
+      "end": 49,
+      "value": "startProfileAt"
+    },
+    {
+      "type": "brace",
+      "start": 49,
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src/wasm-lib/kcl/tests/big_number_angle_to_match_length_x/ast.snap

@@ -0,0 +1,291 @@
+---
+source: kcl/src/simulation_tests.rs
+description: Result of parsing big_number_angle_to_match_length_x.kcl
+snapshot_kind: text
+---
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+              "type": "PipeExpression",
+              "type": "PipeExpression"
+            },
+            "start": 0,
+            "type": "VariableDeclarator"
+          }
+        ],
+        "end": 188,
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+        "start": 0,
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+        "type": "VariableDeclaration"
+      }
+    ],
+    "end": 189,
+    "start": 0
+  }
+}

src/wasm-lib/kcl/tests/big_number_angle_to_match_length_x/input.kcl

@@ -0,0 +1,6 @@
+part001 = startSketchOn('XY')
+  |> startProfileAt([0, 0], %)
+  |> line([1, 3.82], %, $seg01)
+  |> angledLineToX([-angleToMatchLengthX(seg01, 3, %), 3], %)
+  |> close(%)
+  |> extrude(10, %)

src/wasm-lib/kcl/tests/big_number_angle_to_match_length_x/program_memory.snap

@@ -0,0 +1,339 @@
+---
+source: kcl/src/simulation_tests.rs
+description: Program memory after executing big_number_angle_to_match_length_x.kcl
+snapshot_kind: text
+---
+{
+  "environments": [
+    {
+      "bindings": {
+        "HALF_TURN": {
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src/wasm-lib/kcl/tests/big_number_angle_to_match_length_y/ast.snap

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+                                "type": "Literal",
+                                "type": "Literal",
+                                "value": 3
+                              },
+                              {
+                                "end": 145,
+                                "start": 144,
+                                "type": "PipeSubstitution",
+                                "type": "PipeSubstitution"
+                              }
+                            ],
+                            "callee": {
+                              "end": 133,
+                              "name": "angleToMatchLengthY",
+                              "start": 114,
+                              "type": "Identifier"
+                            },
+                            "end": 146,
+                            "optional": false,
+                            "start": 114,
+                            "type": "CallExpression",
+                            "type": "CallExpression"
+                          },
+                          "end": 146,
+                          "operator": "-",
+                          "start": 113,
+                          "type": "UnaryExpression",
+                          "type": "UnaryExpression"
+                        },
+                        {
+                          "end": 149,
+                          "raw": "3",
+                          "start": 148,
+                          "type": "Literal",
+                          "type": "Literal",
+                          "value": 3
+                        }
+                      ],
+                      "end": 150,
+                      "start": 112,
+                      "type": "ArrayExpression",
+                      "type": "ArrayExpression"
+                    },
+                    {
+                      "end": 153,
+                      "start": 152,
+                      "type": "PipeSubstitution",
+                      "type": "PipeSubstitution"
+                    }
+                  ],
+                  "callee": {
+                    "end": 111,
+                    "name": "angledLineToX",
+                    "start": 98,
+                    "type": "Identifier"
+                  },
+                  "end": 154,
+                  "optional": false,
+                  "start": 98,
+                  "type": "CallExpression",
+                  "type": "CallExpression"
+                },
+                {
+                  "arguments": [
+                    {
+                      "end": 167,
+                      "start": 166,
+                      "type": "PipeSubstitution",
+                      "type": "PipeSubstitution"
+                    }
+                  ],
+                  "callee": {
+                    "end": 165,
+                    "name": "close",
+                    "start": 160,
+                    "type": "Identifier"
+                  },
+                  "end": 168,
+                  "optional": false,
+                  "start": 160,
+                  "type": "CallExpression",
+                  "type": "CallExpression"
+                },
+                {
+                  "arguments": [
+                    {
+                      "end": 184,
+                      "raw": "10",
+                      "start": 182,
+                      "type": "Literal",
+                      "type": "Literal",
+                      "value": 10
+                    },
+                    {
+                      "end": 187,
+                      "start": 186,
+                      "type": "PipeSubstitution",
+                      "type": "PipeSubstitution"
+                    }
+                  ],
+                  "callee": {
+                    "end": 181,
+                    "name": "extrude",
+                    "start": 174,
+                    "type": "Identifier"
+                  },
+                  "end": 188,
+                  "optional": false,
+                  "start": 174,
+                  "type": "CallExpression",
+                  "type": "CallExpression"
+                }
+              ],
+              "end": 188,
+              "start": 10,
+              "type": "PipeExpression",
+              "type": "PipeExpression"
+            },
+            "start": 0,
+            "type": "VariableDeclarator"
+          }
+        ],
+        "end": 188,
+        "kind": "const",
+        "start": 0,
+        "type": "VariableDeclaration",
+        "type": "VariableDeclaration"
+      }
+    ],
+    "end": 189,
+    "start": 0
+  }
+}

src/wasm-lib/kcl/tests/big_number_angle_to_match_length_y/input.kcl

@@ -0,0 +1,6 @@
+part001 = startSketchOn('XY')
+  |> startProfileAt([0, 0], %)
+  |> line([1, 3.82], %, $seg01)
+  |> angledLineToX([-angleToMatchLengthY(seg01, 3, %), 3], %)
+  |> close(%)
+  |> extrude(10, %)

src/wasm-lib/kcl/tests/big_number_angle_to_match_length_y/program_memory.snap

@@ -0,0 +1,339 @@
+---
+source: kcl/src/simulation_tests.rs
+description: Program memory after executing big_number_angle_to_match_length_y.kcl
+snapshot_kind: text
+---
+{
+  "environments": [
+    {
+      "bindings": {
+        "HALF_TURN": {
+          "type": "Number",
+          "value": 180.0,
+          "__meta": []
+        },
+        "QUARTER_TURN": {
+          "type": "Number",
+          "value": 90.0,
+          "__meta": []
+        },
+        "THREE_QUARTER_TURN": {
+          "type": "Number",
+          "value": 270.0,
+          "__meta": []
+        },
+        "ZERO": {
+          "type": "Number",
+          "value": 0.0,
+          "__meta": []
+        },
+        "part001": {
+          "type": "Solid",
+          "type": "Solid",
+          "id": "[uuid]",
+          "value": [
+            {
+              "faceId": "[uuid]",
+              "id": "[uuid]",
+              "sourceRange": [
+                66,
+                92,
+                0
+              ],
+              "tag": {
+                "end": 91,
+                "start": 85,
+                "type": "TagDeclarator",
+                "value": "seg01"
+              },
+              "type": "extrudePlane"
+            },
+            {
+              "faceId": "[uuid]",
+              "id": "[uuid]",
+              "sourceRange": [
+                98,
+                154,
+                0
+              ],
+              "tag": null,
+              "type": "extrudePlane"
+            },
+            {
+              "faceId": "[uuid]",
+              "id": "[uuid]",
+              "sourceRange": [
+                160,
+                168,
+                0
+              ],
+              "tag": null,
+              "type": "extrudePlane"
+            }
+          ],
+          "sketch": {
+            "type": "Sketch",
+            "id": "[uuid]",
+            "paths": [
+              {
+                "__geoMeta": {
+                  "id": "[uuid]",
+                  "sourceRange": [
+                    66,
+                    92,
+                    0
+                  ]
+                },
+                "from": [
+                  0.0,
+                  0.0
+                ],
+                "tag": {
+                  "end": 91,
+                  "start": 85,
+                  "type": "TagDeclarator",
+                  "value": "seg01"
+                },
+                "to": [
+                  1.0,
+                  3.82
+                ],
+                "type": "ToPoint"
+              },
+              {
+                "__geoMeta": {
+                  "id": "[uuid]",
+                  "sourceRange": [
+                    98,
+                    154,
+                    0
+                  ]
+                },
+                "from": [
+                  1.0,
+                  3.82
+                ],
+                "tag": null,
+                "to": [
+                  3.0,
+                  3.3954
+                ],
+                "type": "ToPoint"
+              },
+              {
+                "__geoMeta": {
+                  "id": "[uuid]",
+                  "sourceRange": [
+                    160,
+                    168,
+                    0
+                  ]
+                },
+                "from": [
+                  3.0,
+                  3.3954
+                ],
+                "tag": null,
+                "to": [
+                  0.0,
+                  0.0
+                ],
+                "type": "ToPoint"
+              }
+            ],
+            "on": {
+              "type": "plane",
+              "id": "[uuid]",
+              "value": "XY",
+              "origin": {
+                "x": 0.0,
+                "y": 0.0,
+                "z": 0.0
+              },
+              "xAxis": {
+                "x": 1.0,
+                "y": 0.0,
+                "z": 0.0
+              },
+              "yAxis": {
+                "x": 0.0,
+                "y": 1.0,
+                "z": 0.0
+              },
+              "zAxis": {
+                "x": 0.0,
+                "y": 0.0,
+                "z": 1.0
+              },
+              "__meta": []
+            },
+            "start": {
+              "from": [
+                0.0,
+                0.0
+              ],
+              "to": [
+                0.0,
+                0.0
+              ],
+              "tag": null,
+              "__geoMeta": {
+                "id": "[uuid]",
+                "sourceRange": [
+                  35,
+                  60,
+                  0
+                ]
+              }
+            },
+            "tags": {
+              "seg01": {
+                "type": "TagIdentifier",
+                "value": "seg01",
+                "info": {
+                  "type": "TagEngineInfo",
+                  "id": "[uuid]",
+                  "sketch": "[uuid]",
+                  "path": {
+                    "__geoMeta": {
+                      "id": "[uuid]",
+                      "sourceRange": [
+                        66,
+                        92,
+                        0
+                      ]
+                    },
+                    "from": [
+                      0.0,
+                      0.0
+                    ],
+                    "tag": {
+                      "end": 91,
+                      "start": 85,
+                      "type": "TagDeclarator",
+                      "value": "seg01"
+                    },
+                    "to": [
+                      1.0,
+                      3.82
+                    ],
+                    "type": "ToPoint"
+                  },
+                  "surface": {
+                    "faceId": "[uuid]",
+                    "id": "[uuid]",
+                    "sourceRange": [
+                      66,
+                      92,
+                      0
+                    ],
+                    "tag": {
+                      "end": 91,
+                      "start": 85,
+                      "type": "TagDeclarator",
+                      "value": "seg01"
+                    },
+                    "type": "extrudePlane"
+                  }
+                },
+                "__meta": [
+                  {
+                    "sourceRange": [
+                      85,
+                      91,
+                      0
+                    ]
+                  }
+                ]
+              }
+            },
+            "__meta": [
+              {
+                "sourceRange": [
+                  35,
+                  60,
+                  0
+                ]
+              }
+            ]
+          },
+          "height": 10.0,
+          "startCapId": "[uuid]",
+          "endCapId": "[uuid]",
+          "__meta": [
+            {
+              "sourceRange": [
+                35,
+                60,
+                0
+              ]
+            }
+          ]
+        },
+        "seg01": {
+          "type": "TagIdentifier",
+          "type": "TagIdentifier",
+          "value": "seg01",
+          "info": {
+            "type": "TagEngineInfo",
+            "id": "[uuid]",
+            "sketch": "[uuid]",
+            "path": {
+              "__geoMeta": {
+                "id": "[uuid]",
+                "sourceRange": [
+                  66,
+                  92,
+                  0
+                ]
+              },
+              "from": [
+                0.0,
+                0.0
+              ],
+              "tag": {
+                "end": 91,
+                "start": 85,
+                "type": "TagDeclarator",
+                "value": "seg01"
+              },
+              "to": [
+                1.0,
+                3.82
+              ],
+              "type": "ToPoint"
+            },
+            "surface": {
+              "faceId": "[uuid]",
+              "id": "[uuid]",
+              "sourceRange": [
+                66,
+                92,
+                0
+              ],
+              "tag": {
+                "end": 91,
+                "start": 85,
+                "type": "TagDeclarator",
+                "value": "seg01"
+              },
+              "type": "extrudePlane"
+            }
+          },
+          "__meta": [
+            {
+              "sourceRange": [
+                85,
+                91,
+                0
+              ]
+            }
+          ]
+        }
+      },
+      "parent": null
+    }
+  ],
+  "currentEnv": 0,
+  "return": null
+}

src/wasm-lib/kcl/tests/big_number_angle_to_match_length_y/tokens.snap

@@ -0,0 +1,519 @@
+---
+source: kcl/src/simulation_tests.rs
+description: Result of tokenizing big_number_angle_to_match_length_y.kcl
+snapshot_kind: text
+---
+{
+  "Ok": [
+    {
+      "type": "word",
+      "start": 0,
+      "end": 7,
+      "value": "part001"
+    },
+    {
+      "type": "whitespace",
+      "start": 7,
+      "end": 8,
+      "value": " "
+    },
+    {
+      "type": "operator",
+      "start": 8,
+      "end": 9,
+      "value": "="
+    },
+    {
+      "type": "whitespace",
+      "start": 9,
+      "end": 10,
+      "value": " "
+    },
+    {
+      "type": "word",
+      "start": 10,
+      "end": 23,
+      "value": "startSketchOn"
+    },
+    {
+      "type": "brace",
+      "start": 23,
+      "end": 24,
+      "value": "("
+    },
+    {
+      "type": "string",
+      "start": 24,
+      "end": 28,
+      "value": "'XY'"
+    },
+    {
+      "type": "brace",
+      "start": 28,
+      "end": 29,
+      "value": ")"
+    },
+    {
+      "type": "whitespace",
+      "start": 29,
+      "end": 32,
+      "value": "\n  "
+    },
+    {
+      "type": "operator",
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+      "end": 34,
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+    },
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+      "end": 35,
+      "value": " "
+    },
+    {
+      "type": "word",
+      "start": 35,
+      "end": 49,
+      "value": "startProfileAt"
+    },
+    {
+      "type": "brace",
+      "start": 49,
+      "end": 50,
+      "value": "("
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+    {
+      "type": "brace",
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+      "end": 51,
+      "value": "["
+    },
+    {
+      "type": "number",
+      "start": 51,
+      "end": 52,
+      "value": "0"
+    },
+    {
+      "type": "comma",
+      "start": 52,
+      "end": 53,
+      "value": ","
+    },
+    {
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+      "end": 54,
+      "value": " "
+    },
+    {
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+      "start": 54,
+      "end": 55,
+      "value": "0"
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+    {
+      "type": "whitespace",
+      "start": 188,
+      "end": 189,
+      "value": "\n"
+    }
+  ]
+}

src/wasm-lib/kcl/tests/circular_pattern3d_a_pattern/ast.snap

@@ -0,0 +1,671 @@
+---
+source: kcl/src/simulation_tests.rs
+description: Result of parsing circular_pattern3d_a_pattern.kcl
+snapshot_kind: text
+---
+{
+  "Ok": {
+    "body": [
+      {
+        "declarations": [
+          {
+            "end": 163,
+            "id": {
+              "end": 13,
+              "name": "exampleSketch",
+              "start": 0,
+              "type": "Identifier"
+            },
+            "init": {
+              "body": [
+                {
+                  "arguments": [
+                    {
+                      "end": 34,
+                      "raw": "'XZ'",
+                      "start": 30,
+                      "type": "Literal",
+                      "type": "Literal",
+                      "value": "XZ"
+                    }
+                  ],
+                  "callee": {
+                    "end": 29,
+                    "name": "startSketchOn",
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+                {
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+                      "elements": [
+                        {
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+                          "value": 0
+                        },
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+                          "type": "Literal",
+                          "type": "Literal",
+                          "value": 0
+                        }
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+                  "type": "CallExpression",
+                  "type": "CallExpression"
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+                {
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+                          "raw": "2",
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+                          "type": "Literal",
+                          "value": 1
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+                          "start": 120,
+                          "type": "Literal",
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+                        {
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+                            "raw": "4",
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+                      "start": 161,
+                      "type": "PipeSubstitution",
+                      "type": "PipeSubstitution"
+                    }
+                  ],
+                  "callee": {
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+                    "type": "Identifier"
+                  },
+                  "end": 163,
+                  "optional": false,
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+        "type": "VariableDeclaration",
+        "type": "VariableDeclaration"
+      },
+      {
+        "declarations": [
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+            "id": {
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+              "name": "pattn1",
+              "start": 165,
+              "type": "Identifier"
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+                  "properties": [
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+                        "name": "axis",
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+                      "value": {
+                        "elements": [
+                          {
+                            "end": 202,
+                            "raw": "1",
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+                          },
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+                            "type": "Literal",
+                            "type": "Literal",
+                            "value": 0
+                          },
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+                            "raw": "0",
+                            "start": 207,
+                            "type": "Literal",
+                            "type": "Literal",
+                            "value": 0
+                          }
+                        ],
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+                        "start": 200,
+                        "type": "ArrayExpression",
+                        "type": "ArrayExpression"
+                      }
+                    },
+                    {
+                      "end": 225,
+                      "key": {
+                        "end": 222,
+                        "name": "instances",
+                        "start": 213,
+                        "type": "Identifier"
+                      },
+                      "start": 213,
+                      "type": "ObjectProperty",
+                      "value": {
+                        "end": 225,
+                        "raw": "7",
+                        "start": 224,
+                        "type": "Literal",
+                        "type": "Literal",
+                        "value": 7
+                      }
+                    },
+                    {
+                      "end": 240,
+                      "key": {
+                        "end": 237,
+                        "name": "distance",
+                        "start": 229,
+                        "type": "Identifier"
+                      },
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+                      "type": "ObjectProperty",
+                      "value": {
+                        "end": 240,
+                        "raw": "6",
+                        "start": 239,
+                        "type": "Literal",
+                        "type": "Literal",
+                        "value": 6
+                      }
+                    }
+                  ],
+                  "start": 190,
+                  "type": "ObjectExpression",
+                  "type": "ObjectExpression"
+                },
+                {
+                  "end": 257,
+                  "name": "exampleSketch",
+                  "start": 244,
+                  "type": "Identifier",
+                  "type": "Identifier"
+                }
+              ],
+              "callee": {
+                "end": 189,
+                "name": "patternLinear3d",
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+                "type": "Identifier"
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+              "start": 174,
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+        ],
+        "end": 258,
+        "kind": "const",
+        "start": 165,
+        "type": "VariableDeclaration",
+        "type": "VariableDeclaration"
+      },
+      {
+        "declarations": [
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+            "id": {
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+              "name": "pattn2",
+              "start": 260,
+              "type": "Identifier"
+            },
+            "init": {
+              "arguments": [
+                {
+                  "end": 398,
+                  "properties": [
+                    {
+                      "end": 306,
+                      "key": {
+                        "end": 295,
+                        "name": "axis",
+                        "start": 291,
+                        "type": "Identifier"
+                      },
+                      "start": 291,
+                      "type": "ObjectProperty",
+                      "value": {
+                        "elements": [
+                          {
+                            "end": 299,
+                            "raw": "0",
+                            "start": 298,
+                            "type": "Literal",
+                            "type": "Literal",
+                            "value": 0
+                          },
+                          {
+                            "end": 302,
+                            "raw": "0",
+                            "start": 301,
+                            "type": "Literal",
+                            "type": "Literal",
+                            "value": 0
+                          },
+                          {
+                            "end": 305,
+                            "raw": "1",
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+                            "type": "Literal",
+                            "type": "Literal",
+                            "value": 1
+                          }
+                        ],
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+                        "start": 297,
+                        "type": "ArrayExpression",
+                        "type": "ArrayExpression"
+                      }
+                    },
+                    {
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+                      "key": {
+                        "end": 316,
+                        "name": "center",
+                        "start": 310,
+                        "type": "Identifier"
+                      },
+                      "start": 310,
+                      "type": "ObjectProperty",
+                      "value": {
+                        "elements": [
+                          {
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+                              "type": "Literal",
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+                            },
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+                            "operator": "-",
+                            "start": 319,
+                            "type": "UnaryExpression",
+                            "type": "UnaryExpression"
+                          },
+                          {
+                            "argument": {
+                              "end": 327,
+                              "raw": "20",
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+                              "value": 20
+                            },
+                            "end": 327,
+                            "operator": "-",
+                            "start": 324,
+                            "type": "UnaryExpression",
+                            "type": "UnaryExpression"
+                          },
+                          {
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+                              "raw": "20",
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+                              "type": "Literal",
+                              "type": "Literal",
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+                            },
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+                            "operator": "-",
+                            "start": 329,
+                            "type": "UnaryExpression",
+                            "type": "UnaryExpression"
+                          }
+                        ],
+                        "end": 333,
+                        "start": 318,
+                        "type": "ArrayExpression",
+                        "type": "ArrayExpression"
+                      }
+                    },
+                    {
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+                      "key": {
+                        "end": 346,
+                        "name": "instances",
+                        "start": 337,
+                        "type": "Identifier"
+                      },
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+                      "type": "ObjectProperty",
+                      "value": {
+                        "end": 350,
+                        "raw": "41",
+                        "start": 348,
+                        "type": "Literal",
+                        "type": "Literal",
+                        "value": 41
+                      }
+                    },
+                    {
+                      "end": 369,
+                      "key": {
+                        "end": 364,
+                        "name": "arcDegrees",
+                        "start": 354,
+                        "type": "Identifier"
+                      },
+                      "start": 354,
+                      "type": "ObjectProperty",
+                      "value": {
+                        "end": 369,
+                        "raw": "360",
+                        "start": 366,
+                        "type": "Literal",
+                        "type": "Literal",
+                        "value": 360
+                      }
+                    },
+                    {
+                      "end": 396,
+                      "key": {
+                        "end": 389,
+                        "name": "rotateDuplicates",
+                        "start": 373,
+                        "type": "Identifier"
+                      },
+                      "start": 373,
+                      "type": "ObjectProperty",
+                      "value": {
+                        "end": 396,
+                        "raw": "false",
+                        "start": 391,
+                        "type": "Literal",
+                        "type": "Literal",
+                        "value": false
+                      }
+                    }
+                  ],
+                  "start": 287,
+                  "type": "ObjectExpression",
+                  "type": "ObjectExpression"
+                },
+                {
+                  "end": 406,
+                  "name": "pattn1",
+                  "start": 400,
+                  "type": "Identifier",
+                  "type": "Identifier"
+                }
+              ],
+              "callee": {
+                "end": 286,
+                "name": "patternCircular3d",
+                "start": 269,
+                "type": "Identifier"
+              },
+              "end": 407,
+              "optional": false,
+              "start": 269,
+              "type": "CallExpression",
+              "type": "CallExpression"
+            },
+            "start": 260,
+            "type": "VariableDeclarator"
+          }
+        ],
+        "end": 407,
+        "kind": "const",
+        "start": 260,
+        "type": "VariableDeclaration",
+        "type": "VariableDeclaration"
+      }
+    ],
+    "end": 408,
+    "nonCodeMeta": {
+      "nonCodeNodes": {
+        "0": [
+          {
+            "end": 165,
+            "start": 163,
+            "type": "NonCodeNode",
+            "value": {
+              "type": "newLine"
+            }
+          }
+        ],
+        "1": [
+          {
+            "end": 260,
+            "start": 258,
+            "type": "NonCodeNode",
+            "value": {
+              "type": "newLine"
+            }
+          }
+        ]
+      },
+      "startNodes": []
+    },
+    "start": 0
+  }
+}

src/wasm-lib/kcl/tests/circular_pattern3d_a_pattern/input.kcl

@@ -0,0 +1,21 @@
+exampleSketch = startSketchOn('XZ')
+  |> startProfileAt([0, 0], %)
+  |> line([0, 2], %)
+  |> line([3, 1], %)
+  |> line([0, -4], %)
+  |> close(%)
+  |> extrude(1, %)
+
+pattn1 = patternLinear3d({
+  axis: [1, 0, 0],
+  instances: 7,
+  distance: 6
+}, exampleSketch)
+
+pattn2 = patternCircular3d({
+  axis: [0, 0, 1],
+  center: [-20, -20, -20],
+  instances: 41,
+  arcDegrees: 360,
+  rotateDuplicates: false
+}, pattn1)

src/wasm-lib/kcl/tests/comparisons_multiple/ast.snap

@@ -0,0 +1,80 @@
+---
+source: kcl/src/simulation_tests.rs
+description: Result of parsing comparisons_multiple.kcl
+snapshot_kind: text
+---
+{
+  "Ok": {
+    "body": [
+      {
+        "end": 46,
+        "expression": {
+          "arguments": [
+            {
+              "end": 18,
+              "left": {
+                "end": 13,
+                "left": {
+                  "end": 8,
+                  "raw": "3",
+                  "start": 7,
+                  "type": "Literal",
+                  "type": "Literal",
+                  "value": 3
+                },
+                "operator": "==",
+                "right": {
+                  "end": 13,
+                  "raw": "3",
+                  "start": 12,
+                  "type": "Literal",
+                  "type": "Literal",
+                  "value": 3
+                },
+                "start": 7,
+                "type": "BinaryExpression",
+                "type": "BinaryExpression"
+              },
+              "operator": "==",
+              "right": {
+                "end": 18,
+                "raw": "3",
+                "start": 17,
+                "type": "Literal",
+                "type": "Literal",
+                "value": 3
+              },
+              "start": 7,
+              "type": "BinaryExpression",
+              "type": "BinaryExpression"
+            },
+            {
+              "end": 45,
+              "raw": "\"this should not compile\"",
+              "start": 20,
+              "type": "Literal",
+              "type": "Literal",
+              "value": "this should not compile"
+            }
+          ],
+          "callee": {
+            "end": 6,
+            "name": "assert",
+            "start": 0,
+            "type": "Identifier"
+          },
+          "end": 46,
+          "optional": false,
+          "start": 0,
+          "type": "CallExpression",
+          "type": "CallExpression"
+        },
+        "start": 0,
+        "type": "ExpressionStatement",
+        "type": "ExpressionStatement"
+      }
+    ],
+    "end": 47,
+    "start": 0
+  }
+}

src/wasm-lib/kcl/tests/comparisons_multiple/execution_error.snap

@@ -0,0 +1,6 @@
+---
+source: kcl/src/simulation_tests.rs
+description: Error from executing comparisons_multiple.kcl
+snapshot_kind: text
+---
+semantic: KclErrorDetails { source_ranges: [SourceRange([7, 13, 0])], message: "Expected a number, but found a boolean (true/false value)" }

src/wasm-lib/kcl/tests/comparisons_multiple/input.kcl

@@ -0,0 +1 @@
+assert(3 == 3 == 3, "this should not compile")

src/wasm-lib/kcl/tests/comparisons_multiple/tokens.snap

@@ -0,0 +1,105 @@
+---
+source: kcl/src/simulation_tests.rs
+description: Result of tokenizing comparisons_multiple.kcl
+snapshot_kind: text
+---
+{
+  "Ok": [
+    {
+      "type": "word",
+      "start": 0,
+      "end": 6,
+      "value": "assert"
+    },
+    {
+      "type": "brace",
+      "start": 6,
+      "end": 7,
+      "value": "("
+    },
+    {
+      "type": "number",
+      "start": 7,
+      "end": 8,
+      "value": "3"
+    },
+    {
+      "type": "whitespace",
+      "start": 8,
+      "end": 9,
+      "value": " "
+    },
+    {
+      "type": "operator",
+      "start": 9,
+      "end": 11,
+      "value": "=="
+    },
+    {
+      "type": "whitespace",
+      "start": 11,
+      "end": 12,
+      "value": " "
+    },
+    {
+      "type": "number",
+      "start": 12,
+      "end": 13,
+      "value": "3"
+    },
+    {
+      "type": "whitespace",
+      "start": 13,
+      "end": 14,
+      "value": " "
+    },
+    {
+      "type": "operator",
+      "start": 14,
+      "end": 16,
+      "value": "=="
+    },
+    {
+      "type": "whitespace",
+      "start": 16,
+      "end": 17,
+      "value": " "
+    },
+    {
+      "type": "number",
+      "start": 17,
+      "end": 18,
+      "value": "3"
+    },
+    {
+      "type": "comma",
+      "start": 18,
+      "end": 19,
+      "value": ","
+    },
+    {
+      "type": "whitespace",
+      "start": 19,
+      "end": 20,
+      "value": " "
+    },
+    {
+      "type": "string",
+      "start": 20,
+      "end": 45,
+      "value": "\"this should not compile\""
+    },
+    {
+      "type": "brace",
+      "start": 45,
+      "end": 46,
+      "value": ")"
+    },
+    {
+      "type": "whitespace",
+      "start": 46,
+      "end": 47,
+      "value": "\n"
+    }
+  ]
+}

src/wasm-lib/kcl/tests/computed_var/ast.snap

@@ -0,0 +1,435 @@
+---
+source: kcl/src/simulation_tests.rs
+description: Result of parsing computed_var.kcl
+snapshot_kind: text
+---
+{
+  "Ok": {
+    "body": [
+      {
+        "declarations": [
+          {
+            "end": 56,
+            "id": {
+              "end": 40,
+              "name": "arr",
+              "start": 37,
+              "type": "Identifier"
+            },
+            "init": {
+              "elements": [
+                {
+                  "end": 45,
+                  "raw": "0",
+                  "start": 44,
+                  "type": "Literal",
+                  "type": "Literal",
+                  "value": 0
+                },
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+}

src/wasm-lib/kcl/tests/computed_var/input.kcl

@@ -0,0 +1,14 @@
+// This tests computed properties.
+
+
+arr = [0, 0, 0, 10]
+i = 3
+ten = arr[i]
+
+assertEqual(ten, 10, 0.000001, "oops")
+
+p = "foo"
+obj = { foo: 1, bar: 0 }
+one = obj[p]
+
+assertEqual(one, 1, 0.0000001, "oops")