Bump to v0.5.0 (#430)

* Add in a Metrics request/response handler

Signed-off-by: Paul Tagliamonte <paul@kittycad.io>

* Update @kittycad/lib to 0.0.37

Signed-off-by: Paul Tagliamonte <paul@kittycad.io>

* Fix up type issues

Signed-off-by: Paul Tagliamonte <paul@kittycad.io>

* yarn fmt

* Remove VITE_KC_CONNECTION_WEBRTC_REPORT_STATS_MS

Signed-off-by: Paul Tagliamonte <paul@kittycad.io>

---------

Signed-off-by: Paul Tagliamonte <paul@kittycad.io>
Co-authored-by: Kurt Hutten <k.hutten@protonmail.ch>

.env.development

@@ -3,5 +3,4 @@ VITE_KC_API_BASE_URL=https://api.dev.kittycad.io
 VITE_KC_SITE_BASE_URL=https://dev.kittycad.io
 VITE_KC_SKIP_AUTH=false
 VITE_KC_CONNECTION_TIMEOUT_MS=5000
-VITE_KC_CONNECTION_WEBRTC_REPORT_STATS_MS=0
 VITE_KC_SENTRY_DSN=

.env.production

@@ -3,5 +3,4 @@ VITE_KC_API_BASE_URL=https://api.kittycad.io
 VITE_KC_SITE_BASE_URL=https://kittycad.io
 VITE_KC_SKIP_AUTH=false
 VITE_KC_CONNECTION_TIMEOUT_MS=15000
-VITE_KC_CONNECTION_WEBRTC_REPORT_STATS_MS=30000
 VITE_KC_SENTRY_DSN=https://a814f2f66734989a90367f48feee28ca@o1042111.ingest.sentry.io/4505789425844224

.github/workflows/ci.yml

@@ -1,4 +1,4 @@
-name: CI 
+name: CI
 
 on:
   pull_request:
@@ -13,17 +13,31 @@ jobs:
   check-format:
     runs-on: 'ubuntu-20.04'
     steps:
-
       - uses: actions/checkout@v3
-
       - uses: actions/setup-node@v3
         with:
           node-version-file: '.nvmrc'
-
+          cache: 'yarn'
       - run: yarn install
-
       - run: yarn fmt-check
 
+  check-types:
+    runs-on: ubuntu-20.04
+
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-node@v3
+        with:
+          node-version-file: '.nvmrc'
+          cache: 'yarn'
+      - run: yarn install
+      - uses: Swatinem/rust-cache@v2
+        with:
+          workspaces: "./src/wasm-lib"
+
+      - run: yarn build:wasm
+      - run: yarn tsc
+
 
   build-test-web:
     runs-on: ubuntu-20.04
@@ -36,12 +50,15 @@ jobs:
       - uses: actions/setup-node@v3
         with:
           node-version-file: '.nvmrc'
+          cache: 'yarn'
 
       - run: yarn install
 
-      - run: yarn build:wasm
+      - uses: Swatinem/rust-cache@v2
+        with:
+          workspaces: "./src/wasm-lib"
 
-      - run: yarn tsc
+      - run: yarn build:wasm
 
       - run: yarn simpleserver:ci
 
@@ -49,14 +66,12 @@ jobs:
 
       - run: yarn test:cov
 
-      - run: yarn test:rust
-      
       - id: export_version
         run: echo "version=`cat package.json | jq -r '.version'`" >> "$GITHUB_OUTPUT"
 
 
   build-apps:
-    needs: [check-format, build-test-web]
+    needs: [check-format, build-test-web, check-types]
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
@@ -87,6 +102,10 @@ jobs:
         with:
           workspaces: './src-tauri -> target'
 
+      - uses: Swatinem/rust-cache@v2
+        with:
+          workspaces: "./src/wasm-lib"
+
       - name: wasm prep
         shell: bash
         run: |
@@ -110,15 +129,22 @@ jobs:
       - name: Fix format
         run: yarn fmt
 
+      - name: install apple silicon target mac
+        if: matrix.os == 'macos-latest'
+        run: |
+          rustup target add aarch64-apple-darwin
+
       - name: Build the app for the current platform (no upload)
         uses: tauri-apps/tauri-action@v0
         env:
           TAURI_PRIVATE_KEY: ${{ secrets.TAURI_PRIVATE_KEY }}
           TAURI_KEY_PASSWORD: ${{ secrets.TAURI_KEY_PASSWORD }}
+        with:
+          args: ${{ matrix.os == 'macos-latest' && '--target universal-apple-darwin' || '' }}
 
       - uses: actions/upload-artifact@v3
         with:
-          path: src-tauri/target/release/bundle/*/*
+          path: ${{ matrix.os == 'macos-latest' && 'src-tauri/target/universal-apple-darwin/release/bundle/*/*' || 'src-tauri/target/release/bundle/*/*' }}
 
 
   publish-apps-release:
@@ -153,6 +179,10 @@ jobs:
                   "signature": $darwin_sig,
                   "url": $darwin_url
                 },
+                "darwin-aarch64": {
+                  "signature": $darwin_sig,
+                  "url": $darwin_url
+                },
                 "linux-x86_64": {
                   "signature": $linux_sig,
                   "url": $linux_url
@@ -174,15 +204,15 @@ jobs:
         uses: google-github-actions/setup-gcloud@v1.1.1
         with:
           project_id: kittycadapi
-      
+
       - name: Upload release files to public bucket
         uses: google-github-actions/upload-cloud-storage@v1.0.3
         with:
           path: artifact
           glob: '*/*itty*'
           parent: false
-          destination: dl.kittycad.io/releases/modeling-app/v${{ env.VERSION_NO_V }} 
-      
+          destination: dl.kittycad.io/releases/modeling-app/v${{ env.VERSION_NO_V }}
+
       - name: Upload update endpoint to public bucket
         uses: google-github-actions/upload-cloud-storage@v1.0.3
         with:

.prettierignore

@@ -5,3 +5,5 @@ coverage
 # Ignore Rust projects:
 *.rs
 target
+src/wasm-lib/pkg
+src/wasm-lib/kcl/bindings

README.md

@@ -86,3 +86,24 @@ The PR may serve as a place to discuss the human-readable changelog and extra QA
 3. Create a new release and tag pointing to the bump version commit using semantic versioning `v{x}.{y}.{z}`
 
 4. A new Action kicks in at https://github.com/KittyCAD/modeling-app/actions, uploading artifacts to the release
+
+## Fuzzing the parser
+
+Make sure you install cargo fuzz:
+
+```bash
+$ cargo install cargo-fuzz
+```
+
+```bash
+$ cd src/wasm-lib/kcl
+
+# list the fuzz targets
+$ cargo fuzz list
+
+# run the parser fuzzer
+$ cargo +nightly fuzz run parser
+```
+
+For more information on fuzzing you can check out 
+[this guide](https://rust-fuzz.github.io/book/cargo-fuzz.html).

package.json

@@ -1,6 +1,6 @@
 {
   "name": "untitled-app",
-  "version": "0.3.2",
+  "version": "0.5.0",
   "private": true,
   "dependencies": {
     "@codemirror/autocomplete": "^6.9.0",
@@ -10,7 +10,7 @@
     "@fortawesome/react-fontawesome": "^0.2.0",
     "@headlessui/react": "^1.7.13",
     "@headlessui/tailwindcss": "^0.2.0",
-    "@kittycad/lib": "^0.0.35",
+    "@kittycad/lib": "^0.0.37",
     "@lezer/javascript": "^1.4.7",
     "@open-rpc/client-js": "^1.8.1",
     "@react-hook/resize-observer": "^1.2.6",
@@ -70,7 +70,7 @@
     "fmt": "prettier --write ./src",
     "fmt-check": "prettier --check ./src",
     "build:wasm": "yarn wasm-prep && (cd src/wasm-lib && wasm-pack build --target web --out-dir pkg && cargo test -p kcl-lib export_bindings) && cp src/wasm-lib/pkg/wasm_lib_bg.wasm public && yarn fmt && yarn remove-importmeta",
-    "remove-importmeta": "sed -i 's/import.meta.url//g' \"./src/wasm-lib/pkg/wasm_lib.js\"; sed -i '' 's/import.meta.url//g' \"./src/wasm-lib/pkg/wasm_lib.js\" || echo \"sed for both mac and linux\"",
+    "remove-importmeta": "sed -i 's/import.meta.url/window.location.origin/g' \"./src/wasm-lib/pkg/wasm_lib.js\"; sed -i '' 's/import.meta.url/window.location.origin/g' \"./src/wasm-lib/pkg/wasm_lib.js\" || echo \"sed for both mac and linux\"",
     "wasm-prep": "rm -rf src/wasm-lib/pkg && mkdir src/wasm-lib/pkg && rm -rf src/wasm-lib/kcl/bindings",
     "lint": "eslint --fix src",
     "bump-jsons": "echo \"$(jq --arg v \"$VERSION\" '.version=$v' package.json --indent 2)\" > package.json && echo \"$(jq --arg v \"$VERSION\" '.package.version=$v' src-tauri/tauri.conf.json --indent 2)\" > src-tauri/tauri.conf.json"

src-tauri/tauri.conf.json

@@ -8,7 +8,7 @@
   },
   "package": {
     "productName": "kittycad-modeling",
-    "version": "0.3.2"
+    "version": "0.5.0"
   },
   "tauri": {
     "allowlist": {

src/App.tsx

@@ -2,7 +2,6 @@ import {
   useRef,
   useEffect,
   useLayoutEffect,
-  useMemo,
   useCallback,
   MouseEventHandler,
 } from 'react'
@@ -10,30 +9,20 @@ import { DebugPanel } from './components/DebugPanel'
 import { v4 as uuidv4 } from 'uuid'
 import { asyncParser } from './lang/abstractSyntaxTree'
 import { _executor } from './lang/executor'
-import CodeMirror from '@uiw/react-codemirror'
-import { linter, lintGutter } from '@codemirror/lint'
-import { ViewUpdate, EditorView } from '@codemirror/view'
-import {
-  lineHighlightField,
-  addLineHighlight,
-} from './editor/highlightextension'
-import { PaneType, Selections, useStore } from './useStore'
-import Server from './editor/lsp/server'
-import Client from './editor/lsp/client'
+import { PaneType, useStore } from './useStore'
 import { Logs, KCLErrors } from './components/Logs'
 import { CollapsiblePanel } from './components/CollapsiblePanel'
 import { MemoryPanel } from './components/MemoryPanel'
 import { useHotKeyListener } from './hooks/useHotKeyListener'
 import { Stream } from './components/Stream'
 import ModalContainer from 'react-modal-promise'
-import { FromServer, IntoServer } from './editor/lsp/codec'
 import {
   EngineCommand,
   EngineCommandManager,
 } from './lang/std/engineConnection'
-import { isOverlap, throttle } from './lib/utils'
+import { throttle } from './lib/utils'
 import { AppHeader } from './components/AppHeader'
-import { KCLError, kclErrToDiagnostic } from './lang/errors'
+import { KCLError } from './lang/errors'
 import { Resizable } from 're-resizable'
 import {
   faCode,
@@ -41,96 +30,75 @@ import {
   faSquareRootVariable,
 } from '@fortawesome/free-solid-svg-icons'
 import { useHotkeys } from 'react-hotkeys-hook'
-import { TEST } from './env'
 import { getNormalisedCoordinates } from './lib/utils'
-import { Themes, getSystemTheme } from './lib/theme'
 import { isTauri } from './lib/isTauri'
-import { useLoaderData, useParams } from 'react-router-dom'
-import { writeTextFile } from '@tauri-apps/api/fs'
-import { PROJECT_ENTRYPOINT } from './lib/tauriFS'
+import { useLoaderData } from 'react-router-dom'
 import { IndexLoaderData } from './Router'
-import { toast } from 'react-hot-toast'
 import { useGlobalStateContext } from 'hooks/useGlobalStateContext'
 import { onboardingPaths } from 'routes/Onboarding'
-import { LanguageServerClient } from 'editor/lsp'
-import kclLanguage from 'editor/lsp/language'
+import { cameraMouseDragGuards } from 'lib/cameraControls'
+import { CameraDragInteractionType_type } from '@kittycad/lib/dist/types/src/models'
+import { CodeMenu } from 'components/CodeMenu'
+import { TextEditor } from 'components/TextEditor'
+import { Themes, getSystemTheme } from 'lib/theme'
 
 export function App() {
   const { code: loadedCode, project } = useLoaderData() as IndexLoaderData
-  const pathParams = useParams()
+
   const streamRef = useRef<HTMLDivElement>(null)
   useHotKeyListener()
   const {
-    editorView,
-    setEditorView,
-    setSelectionRanges,
-    selectionRanges,
     addLog,
     addKCLError,
-    code,
     setCode,
     setAst,
     setError,
     setProgramMemory,
     resetLogs,
     resetKCLErrors,
-    selectionRangeTypeMap,
     setArtifactMap,
     engineCommandManager,
     setEngineCommandManager,
     highlightRange,
     setHighlightRange,
     setCursor2,
-    sourceRangeMap,
     setMediaStream,
     setIsStreamReady,
     isStreamReady,
-    isLSPServerReady,
-    setIsLSPServerReady,
-    isMouseDownInStream,
-    formatCode,
+    buttonDownInStream,
     openPanes,
     setOpenPanes,
     didDragInStream,
     setStreamDimensions,
     streamDimensions,
+    setIsExecuting,
+    defferedCode,
   } = useStore((s) => ({
-    editorView: s.editorView,
-    setEditorView: s.setEditorView,
-    setSelectionRanges: s.setSelectionRanges,
-    selectionRanges: s.selectionRanges,
-    setGuiMode: s.setGuiMode,
     addLog: s.addLog,
-    code: s.code,
+    defferedCode: s.defferedCode,
     setCode: s.setCode,
     setAst: s.setAst,
     setError: s.setError,
     setProgramMemory: s.setProgramMemory,
     resetLogs: s.resetLogs,
     resetKCLErrors: s.resetKCLErrors,
-    selectionRangeTypeMap: s.selectionRangeTypeMap,
     setArtifactMap: s.setArtifactNSourceRangeMaps,
     engineCommandManager: s.engineCommandManager,
     setEngineCommandManager: s.setEngineCommandManager,
     highlightRange: s.highlightRange,
     setHighlightRange: s.setHighlightRange,
-    isShiftDown: s.isShiftDown,
-    setCursor: s.setCursor,
     setCursor2: s.setCursor2,
-    sourceRangeMap: s.sourceRangeMap,
     setMediaStream: s.setMediaStream,
     isStreamReady: s.isStreamReady,
     setIsStreamReady: s.setIsStreamReady,
-    isLSPServerReady: s.isLSPServerReady,
-    setIsLSPServerReady: s.setIsLSPServerReady,
-    isMouseDownInStream: s.isMouseDownInStream,
-    formatCode: s.formatCode,
+    buttonDownInStream: s.buttonDownInStream,
     addKCLError: s.addKCLError,
     openPanes: s.openPanes,
     setOpenPanes: s.setOpenPanes,
     didDragInStream: s.didDragInStream,
     setStreamDimensions: s.setStreamDimensions,
     streamDimensions: s.streamDimensions,
+    setIsExecuting: s.setIsExecuting,
   }))
 
   const {
@@ -138,7 +106,7 @@ export function App() {
       context: { token },
     },
     settings: {
-      context: { showDebugPanel, theme, onboardingStatus },
+      context: { showDebugPanel, onboardingStatus, cameraControls, theme },
     },
   } = useGlobalStateContext()
 
@@ -179,80 +147,6 @@ export function App() {
     }
   }, [loadedCode, setCode])
 
-  // const onChange = React.useCallback((value: string, viewUpdate: ViewUpdate) => {
-  const onChange = (value: string, viewUpdate: ViewUpdate) => {
-    setCode(value)
-    if (isTauri() && pathParams.id) {
-      // Save the file to disk
-      // Note that PROJECT_ENTRYPOINT is hardcoded until we support multiple files
-      writeTextFile(pathParams.id + '/' + PROJECT_ENTRYPOINT, value).catch(
-        (err) => {
-          // TODO: add Sentry per GH issue #254 (https://github.com/KittyCAD/modeling-app/issues/254)
-          console.error('error saving file', err)
-          toast.error('Error saving file, please check file permissions')
-        }
-      )
-    }
-    if (editorView) {
-      editorView?.dispatch({ effects: addLineHighlight.of([0, 0]) })
-    }
-  } //, []);
-  const onUpdate = (viewUpdate: ViewUpdate) => {
-    if (!editorView) {
-      setEditorView(viewUpdate.view)
-    }
-    const ranges = viewUpdate.state.selection.ranges
-
-    const isChange =
-      ranges.length !== selectionRanges.codeBasedSelections.length ||
-      ranges.some(({ from, to }, i) => {
-        return (
-          from !== selectionRanges.codeBasedSelections[i].range[0] ||
-          to !== selectionRanges.codeBasedSelections[i].range[1]
-        )
-      })
-
-    if (!isChange) return
-    const codeBasedSelections: Selections['codeBasedSelections'] = ranges.map(
-      ({ from, to }) => {
-        if (selectionRangeTypeMap[to]) {
-          return {
-            type: selectionRangeTypeMap[to],
-            range: [from, to],
-          }
-        }
-        return {
-          type: 'default',
-          range: [from, to],
-        }
-      }
-    )
-    const idBasedSelections = codeBasedSelections
-      .map(({ type, range }) => {
-        const hasOverlap = Object.entries(sourceRangeMap).filter(
-          ([_, sourceRange]) => {
-            return isOverlap(sourceRange, range)
-          }
-        )
-        if (hasOverlap.length) {
-          return {
-            type,
-            id: hasOverlap[0][0],
-          }
-        }
-      })
-      .filter(Boolean) as any
-
-    engineCommandManager?.cusorsSelected({
-      otherSelections: [],
-      idBasedSelections,
-    })
-
-    setSelectionRanges({
-      otherSelections: [],
-      codeBasedSelections,
-    })
-  }
   const streamWidth = streamRef?.current?.offsetWidth
   const streamHeight = streamRef?.current?.offsetHeight
 
@@ -286,16 +180,17 @@ export function App() {
     let unsubFn: any[] = []
     const asyncWrap = async () => {
       try {
-        if (!code) {
+        if (!defferedCode) {
           setAst(null)
           return
         }
-        const _ast = await asyncParser(code)
+        const _ast = await asyncParser(defferedCode)
         setAst(_ast)
         resetLogs()
         resetKCLErrors()
         engineCommandManager.endSession()
         engineCommandManager.startNewSession()
+        setIsExecuting(true)
         const programMemory = await _executor(
           _ast,
           {
@@ -327,6 +222,7 @@ export function App() {
 
         const { artifactMap, sourceRangeMap } =
           await engineCommandManager.waitForAllCommands()
+        setIsExecuting(false)
 
         setArtifactMap({ artifactMap, sourceRangeMap })
         const unSubHover = engineCommandManager.subscribeToUnreliable({
@@ -361,6 +257,7 @@ export function App() {
 
         setError()
       } catch (e: any) {
+        setIsExecuting(false)
         if (e instanceof KCLError) {
           addKCLError(e)
         } else {
@@ -374,33 +271,38 @@ export function App() {
     return () => {
       unsubFn.forEach((fn) => fn())
     }
-  }, [code, isStreamReady, engineCommandManager])
+  }, [defferedCode, isStreamReady, engineCommandManager])
 
   const debounceSocketSend = throttle<EngineCommand>((message) => {
     engineCommandManager?.sendSceneCommand(message)
   }, 16)
-  const handleMouseMove: MouseEventHandler<HTMLDivElement> = ({
-    clientX,
-    clientY,
-    ctrlKey,
-    shiftKey,
-    currentTarget,
-    nativeEvent,
-  }) => {
-    nativeEvent.preventDefault()
+  const handleMouseMove: MouseEventHandler<HTMLDivElement> = (e) => {
+    e.nativeEvent.preventDefault()
 
     const { x, y } = getNormalisedCoordinates({
-      clientX,
-      clientY,
-      el: currentTarget,
+      clientX: e.clientX,
+      clientY: e.clientY,
+      el: e.currentTarget,
       ...streamDimensions,
     })
 
-    const interaction = ctrlKey ? 'zoom' : shiftKey ? 'pan' : 'rotate'
-
     const newCmdId = uuidv4()
 
-    if (isMouseDownInStream) {
+    if (buttonDownInStream) {
+      const interactionGuards = cameraMouseDragGuards[cameraControls]
+      let interaction: CameraDragInteractionType_type
+
+      const eWithButton = { ...e, button: buttonDownInStream }
+
+      if (interactionGuards.pan.callback(eWithButton)) {
+        interaction = 'pan'
+      } else if (interactionGuards.rotate.callback(eWithButton)) {
+        interaction = 'rotate'
+      } else if (interactionGuards.zoom.dragCallback(eWithButton)) {
+        interaction = 'zoom'
+      } else {
+        return
+      }
       debounceSocketSend({
         type: 'modeling_cmd_req',
         cmd: {
@@ -422,56 +324,6 @@ export function App() {
     }
   }
 
-  const extraExtensions = useMemo(() => {
-    if (TEST) return []
-    return [
-      lintGutter(),
-      linter((_view) => {
-        return kclErrToDiagnostic(useStore.getState().kclErrors)
-      }),
-      EditorView.lineWrapping,
-    ]
-  }, [])
-
-  // So this is a bit weird, we need to initialize the lsp server and client.
-  // But the server happens async so we break this into two parts.
-  // Below is the client and server promise.
-  const { lspClient } = useMemo(() => {
-    const intoServer: IntoServer = new IntoServer()
-    const fromServer: FromServer = FromServer.create()
-    const client = new Client(fromServer, intoServer)
-    if (!TEST) {
-      Server.initialize(intoServer, fromServer).then((lspServer) => {
-        lspServer.start()
-        setIsLSPServerReady(true)
-      })
-    }
-
-    const lspClient = new LanguageServerClient({ client })
-    return { lspClient }
-  }, [setIsLSPServerReady])
-
-  // Here we initialize the plugin which will start the client.
-  // When we have multi-file support the name of the file will be a dep of
-  // this use memo, as well as the directory structure, which I think is
-  // a good setup becuase it will restart the client but not the server :)
-  // We do not want to restart the server, its just wasteful.
-  const kclLSP = useMemo(() => {
-    let plugin = null
-    if (isLSPServerReady && !TEST) {
-      // Set up the lsp plugin.
-      const lsp = kclLanguage({
-        // When we have more than one file, we'll need to change this.
-        documentUri: `file:///we-just-have-one-file-for-now.kcl`,
-        workspaceFolders: null,
-        client: lspClient,
-      })
-
-      plugin = lsp
-    }
-    return plugin
-  }, [lspClient, isLSPServerReady])
-
   return (
     <div
       className="h-screen overflow-hidden relative flex flex-col cursor-pointer select-none"
@@ -482,7 +334,7 @@ export function App() {
         className={
           'transition-opacity transition-duration-75 ' +
           paneOpacity +
-          (isMouseDownInStream ? ' pointer-events-none' : '')
+          (buttonDownInStream ? ' pointer-events-none' : '')
         }
         project={project}
         enableMenu={true}
@@ -491,7 +343,7 @@ export function App() {
       <Resizable
         className={
           'h-full flex flex-col flex-1 z-10 my-5 ml-5 pr-1 transition-opacity transition-duration-75 ' +
-          (isMouseDownInStream || onboardingStatus === 'camera'
+          (buttonDownInStream || onboardingStatus === 'camera'
             ? ' pointer-events-none '
             : ' ') +
           paneOpacity
@@ -513,36 +365,11 @@ export function App() {
           <CollapsiblePanel
             title="Code"
             icon={faCode}
-            className="open:!mb-2 overflow-x-hidden"
+            className="open:!mb-2"
             open={openPanes.includes('code')}
+            menu={<CodeMenu />}
           >
-            <div className="px-2 py-1">
-              <button
-                // disabled={!shouldFormat}
-                onClick={formatCode}
-                // className={`${!shouldFormat && 'text-gray-300'}`}
-              >
-                format
-              </button>
-            </div>
-            <div
-              id="code-mirror-override"
-              className="overflow-x-hidden  h-full"
-            >
-              <CodeMirror
-                className="h-full overflow-hidden-x"
-                value={code}
-                extensions={
-                  kclLSP
-                    ? [kclLSP, lineHighlightField, ...extraExtensions]
-                    : [lineHighlightField, ...extraExtensions]
-                }
-                onChange={onChange}
-                onUpdate={onUpdate}
-                theme={editorTheme}
-                onCreateEditor={(_editorView) => setEditorView(_editorView)}
-              />
-            </div>
+            <TextEditor theme={editorTheme} />
           </CollapsiblePanel>
           <section className="flex flex-col">
             <MemoryPanel
@@ -573,7 +400,7 @@ export function App() {
           className={
             'transition-opacity transition-duration-75 ' +
             paneOpacity +
-            (isMouseDownInStream ? ' pointer-events-none' : '')
+            (buttonDownInStream ? ' pointer-events-none' : '')
           }
           open={openPanes.includes('debug')}
         />

src/Toolbar.tsx

@@ -8,7 +8,6 @@ import { EqualAngle } from './components/Toolbar/EqualAngle'
 import { Intersect } from './components/Toolbar/Intersect'
 import { SetHorzVertDistance } from './components/Toolbar/SetHorzVertDistance'
 import { SetAngleLength } from './components/Toolbar/setAngleLength'
-import { ConvertToVariable } from './components/Toolbar/ConvertVariable'
 import { SetAbsDistance } from './components/Toolbar/SetAbsDistance'
 import { SetAngleBetween } from './components/Toolbar/SetAngleBetween'
 import { Fragment, useEffect } from 'react'
@@ -164,7 +163,6 @@ export const Toolbar = () => {
               </button>
             )
           })}
-        <ConvertToVariable />
         <HorzVert horOrVert="horizontal" />
         <HorzVert horOrVert="vertical" />
         <EqualLength />

src/components/AvailableVarsHelpers.tsx

@@ -198,29 +198,25 @@ export const CreateNewVariable = ({
   isNewVariableNameUnique,
   setNewVariableName,
   shouldCreateVariable,
-  setShouldCreateVariable,
+  setShouldCreateVariable = () => {},
   showCheckbox = true,
 }: {
   isNewVariableNameUnique: boolean
   newVariableName: string
   setNewVariableName: (a: string) => void
-  shouldCreateVariable: boolean
-  setShouldCreateVariable: (a: boolean) => void
+  shouldCreateVariable?: boolean
+  setShouldCreateVariable?: (a: boolean) => void
   showCheckbox?: boolean
 }) => {
   return (
     <>
-      <label
-        htmlFor="create-new-variable"
-        className="block text-sm font-medium text-gray-700 mt-3 font-mono"
-      >
+      <label htmlFor="create-new-variable" className="block mt-3 font-mono">
         Create new variable
       </label>
-      <div className="mt-1 flex flex-1">
+      <div className="mt-1 flex gap-2 items-center">
         {showCheckbox && (
           <input
             type="checkbox"
-            className="shadow-sm focus:ring-blue-500 focus:border-blue-500 block w-full sm:text-sm border-gray-300 rounded-md font-mono pl-1 flex-shrink"
             checked={shouldCreateVariable}
             onChange={(e) => {
               setShouldCreateVariable(e.target.checked)
@@ -232,7 +228,10 @@ export const CreateNewVariable = ({
           disabled={!shouldCreateVariable}
           name="create-new-variable"
           id="create-new-variable"
-          className={`shadow-sm font-[monospace] focus:ring-blue-500 focus:border-blue-500 block w-full sm:text-sm border-gray-300 rounded-md font-mono pl-1 flex-shrink-0 ${
+          autoFocus={true}
+          autoCapitalize="off"
+          autoCorrect="off"
+          className={`font-mono flex-1 sm:text-sm px-2 py-1 rounded-sm bg-chalkboard-10 dark:bg-chalkboard-90 text-chalkboard-90 dark:text-chalkboard-10 ${
             !shouldCreateVariable ? 'opacity-50' : ''
           }`}
           value={newVariableName}

src/components/CodeMenu.module.css

@@ -0,0 +1,19 @@
+.button {
+  @apply flex justify-between items-center gap-2 px-2 py-1 text-left border-none rounded-sm;
+  @apply font-mono text-xs font-bold select-none text-chalkboard-90;
+  @apply ui-active:bg-liquid-10/50 ui-active:text-liquid-90;
+  @apply transition-colors ease-out;
+}
+
+:global(.dark) .button {
+  @apply text-chalkboard-30;
+  @apply ui-active:bg-chalkboard-80 ui-active:text-liquid-10;
+}
+
+.button small {
+  @apply text-chalkboard-60;
+}
+
+:global(.dark) .button small {
+  @apply text-chalkboard-40;
+}

src/components/CodeMenu.tsx

@@ -0,0 +1,59 @@
+import { Menu } from '@headlessui/react'
+import { PropsWithChildren } from 'react'
+import { faEllipsis } from '@fortawesome/free-solid-svg-icons'
+import { ActionIcon } from './ActionIcon'
+import { useStore } from 'useStore'
+import styles from './CodeMenu.module.css'
+import { useConvertToVariable } from 'hooks/useToolbarGuards'
+import { editorShortcutMeta } from './TextEditor'
+
+export const CodeMenu = ({ children }: PropsWithChildren) => {
+  const { formatCode } = useStore((s) => ({
+    formatCode: s.formatCode,
+  }))
+  const { enable: convertToVarEnabled, handleClick: handleConvertToVarClick } =
+    useConvertToVariable()
+
+  return (
+    <Menu>
+      <div
+        className="relative"
+        onClick={(e) => {
+          if (e.eventPhase === 3) {
+            e.stopPropagation()
+            e.preventDefault()
+          }
+        }}
+      >
+        <Menu.Button className="p-0 border-none relative">
+          <ActionIcon
+            icon={faEllipsis}
+            bgClassName={
+              'bg-chalkboard-20 dark:bg-chalkboard-110 hover:bg-liquid-10/50 hover:dark:bg-chalkboard-90 ui-active:bg-chalkboard-80 ui-active:dark:bg-chalkboard-90  rounded'
+            }
+            iconClassName={'text-chalkboard-90 dark:text-chalkboard-40'}
+          />
+        </Menu.Button>
+        <Menu.Items className="absolute right-0 left-auto w-72 flex flex-col gap-1 divide-y divide-chalkboard-20 dark:divide-chalkboard-70 align-stretch px-0 py-1 bg-chalkboard-10 dark:bg-chalkboard-90 rounded-sm shadow-lg border border-solid border-chalkboard-20/50 dark:border-chalkboard-80/50">
+          <Menu.Item>
+            <button onClick={() => formatCode()} className={styles.button}>
+              <span>Format code</span>
+              <small>{editorShortcutMeta.formatCode.display}</small>
+            </button>
+          </Menu.Item>
+          {convertToVarEnabled && (
+            <Menu.Item>
+              <button
+                onClick={handleConvertToVarClick}
+                className={styles.button}
+              >
+                <span>Convert to Variable</span>
+                <small>{editorShortcutMeta.convertToVariable.display}</small>
+              </button>
+            </Menu.Item>
+          )}
+        </Menu.Items>
+      </div>
+    </Menu>
+  )
+}

src/components/CollapsiblePanel.module.css

@@ -1,5 +1,5 @@
 .panel {
-  @apply relative overflow-auto z-0;
+  @apply relative z-0;
   @apply bg-chalkboard-10/70 backdrop-blur-sm;
 }
 
@@ -9,7 +9,7 @@
 
 .header {
   @apply sticky top-0 z-10 cursor-pointer;
-  @apply flex items-center gap-2 w-full p-2;
+  @apply flex items-center justify-between gap-2 w-full p-2;
   @apply font-mono text-xs font-bold select-none text-chalkboard-90;
   @apply bg-chalkboard-20;
 }

src/components/CollapsiblePanel.tsx

@@ -8,6 +8,7 @@ export interface CollapsiblePanelProps
   title: string
   icon?: IconDefinition
   open?: boolean
+  menu?: React.ReactNode
   iconClassNames?: {
     bg?: string
     icon?: string
@@ -18,21 +19,27 @@ export const PanelHeader = ({
   title,
   icon,
   iconClassNames,
+  menu,
 }: CollapsiblePanelProps) => {
   return (
     <summary className={styles.header}>
-      <ActionIcon
-        icon={icon}
-        bgClassName={
-          'bg-chalkboard-30 dark:bg-chalkboard-90 group-open:bg-chalkboard-80 rounded ' +
-          (iconClassNames?.bg || '')
-        }
-        iconClassName={
-          'text-chalkboard-90 dark:text-chalkboard-40 group-open:text-liquid-10 ' +
-          (iconClassNames?.icon || '')
-        }
-      />
-      {title}
+      <div className="flex gap-2 align-center flex-1">
+        <ActionIcon
+          icon={icon}
+          bgClassName={
+            'bg-chalkboard-30 dark:bg-chalkboard-90 group-open:bg-chalkboard-80 rounded ' +
+            (iconClassNames?.bg || '')
+          }
+          iconClassName={
+            'text-chalkboard-90 dark:text-chalkboard-40 group-open:text-liquid-10 ' +
+            (iconClassNames?.icon || '')
+          }
+        />
+        {title}
+      </div>
+      <div className="group-open:opacity-100 opacity-0 group-open:pointer-events-auto pointer-events-none">
+        {menu}
+      </div>
     </summary>
   )
 }
@@ -43,6 +50,7 @@ export const CollapsiblePanel = ({
   children,
   className,
   iconClassNames,
+  menu,
   ...props
 }: CollapsiblePanelProps) => {
   return (
@@ -50,7 +58,12 @@ export const CollapsiblePanel = ({
       {...props}
       className={styles.panel + ' group ' + (className || '')}
     >
-      <PanelHeader title={title} icon={icon} iconClassNames={iconClassNames} />
+      <PanelHeader
+        title={title}
+        icon={icon}
+        iconClassNames={iconClassNames}
+        menu={menu}
+      />
       {children}
     </details>
   )

src/components/CommandBar.tsx

@@ -196,7 +196,7 @@ const CommandBar = () => {
           setCommandBarOpen(false)
           clearState()
         }}
-        className="fixed inset-0 overflow-y-auto p-4 pt-[25vh]"
+        className="fixed inset-0 z-40 overflow-y-auto p-4 pt-[25vh]"
       >
         <Transition.Child
           enter="duration-100 ease-out"
@@ -207,7 +207,7 @@ const CommandBar = () => {
           leaveTo="opacity-0"
           as={Fragment}
         >
-          <Dialog.Overlay className="fixed z-40 inset-0 bg-chalkboard-10/70 dark:bg-chalkboard-110/50" />
+          <Dialog.Overlay className="fixed inset-0 bg-chalkboard-10/70 dark:bg-chalkboard-110/50" />
         </Transition.Child>
         <Transition.Child
           enter="duration-100 ease-out"
@@ -221,7 +221,7 @@ const CommandBar = () => {
           <Combobox
             value={selectedCommand}
             onChange={handleCommandSelection}
-            className="rounded relative mx-auto z-40 p-2 bg-chalkboard-10 dark:bg-chalkboard-100 border dark:border-chalkboard-70 max-w-xl w-full shadow-lg"
+            className="rounded relative mx-auto p-2 bg-chalkboard-10 dark:bg-chalkboard-100 border dark:border-chalkboard-70 max-w-xl w-full shadow-lg"
             as="div"
           >
             <div className="flex gap-2 items-center">

src/components/SetVarNameModal.tsx

@@ -1,6 +1,9 @@
 import { Dialog, Transition } from '@headlessui/react'
 import { Fragment } from 'react'
 import { useCalc, CreateNewVariable } from './AvailableVarsHelpers'
+import { ActionButton } from './ActionButton'
+import { faPlus } from '@fortawesome/free-solid-svg-icons'
+import { toast } from 'react-hot-toast'
 
 export const SetVarNameModal = ({
   isOpen,
@@ -19,67 +22,65 @@ export const SetVarNameModal = ({
 
   return (
     <Transition appear show={isOpen} as={Fragment}>
-      <Dialog as="div" className="relative z-10" onClose={onReject}>
+      <Dialog
+        as="div"
+        className="fixed inset-0 z-40 overflow-y-auto p-4 pt-[25vh]"
+        onClose={onReject}
+      >
         <Transition.Child
           as={Fragment}
           enter="ease-out duration-300"
-          enterFrom="opacity-0"
-          enterTo="opacity-100"
-          leave="ease-in duration-200"
+          enterFrom="opacity-0 translate-y-4"
+          enterTo="opacity-100 translate-y-0"
+          leave="ease-in duration-75"
           leaveFrom="opacity-100"
           leaveTo="opacity-0"
         >
-          <div className="fixed inset-0 bg-black bg-opacity-25" />
+          <Dialog.Overlay className="fixed inset-0 bg-chalkboard-10/70 dark:bg-chalkboard-110/50" />
         </Transition.Child>
 
-        <div className="fixed inset-0 overflow-y-auto">
-          <div className="flex min-h-full items-center justify-center p-4 text-center">
-            <Transition.Child
-              as={Fragment}
-              enter="ease-out duration-300"
-              enterFrom="opacity-0 scale-95"
-              enterTo="opacity-100 scale-100"
-              leave="ease-in duration-200"
-              leaveFrom="opacity-100 scale-100"
-              leaveTo="opacity-0 scale-95"
+        <Transition.Child
+          as={Fragment}
+          enter="ease-out duration-300"
+          enterFrom="opacity-0 scale-95"
+          enterTo="opacity-100 scale-100"
+          leave="ease-in duration-200"
+          leaveFrom="opacity-100 scale-100"
+          leaveTo="opacity-0 scale-95"
+        >
+          <Dialog.Panel className="rounded relative mx-auto px-4 py-8 bg-chalkboard-10 dark:bg-chalkboard-100 border dark:border-chalkboard-70 max-w-xl w-full shadow-lg">
+            <form
+              onSubmit={(e) => {
+                e.preventDefault()
+                onResolve({
+                  variableName: newVariableName,
+                })
+                toast.success(`Added variable ${newVariableName}`)
+              }}
             >
-              <Dialog.Panel className="w-full max-w-md transform overflow-hidden rounded-2xl bg-white p-6 text-left align-middle shadow-xl transition-all">
-                <Dialog.Title
-                  as="h3"
-                  className="text-lg font-medium leading-6 text-gray-900 capitalize"
+              <CreateNewVariable
+                setNewVariableName={setNewVariableName}
+                newVariableName={newVariableName}
+                isNewVariableNameUnique={isNewVariableNameUnique}
+                shouldCreateVariable={true}
+                showCheckbox={false}
+              />
+              <div className="mt-8 flex justify-between">
+                <ActionButton
+                  Element="button"
+                  type="submit"
+                  disabled={!isNewVariableNameUnique}
+                  icon={{ icon: faPlus }}
                 >
-                  Set {valueName}
-                </Dialog.Title>
-
-                <CreateNewVariable
-                  setNewVariableName={setNewVariableName}
-                  newVariableName={newVariableName}
-                  isNewVariableNameUnique={isNewVariableNameUnique}
-                  shouldCreateVariable={true}
-                  setShouldCreateVariable={() => {}}
-                />
-                <div className="mt-4">
-                  <button
-                    type="button"
-                    disabled={!isNewVariableNameUnique}
-                    className={`inline-flex justify-center rounded-md border border-transparent bg-blue-100 px-4 py-2 text-sm font-medium text-blue-900 hover:bg-blue-200 focus:outline-none focus-visible:ring-2 focus-visible:ring-blue-500 focus-visible:ring-offset-2 ${
-                      !isNewVariableNameUnique
-                        ? 'opacity-50 cursor-not-allowed'
-                        : ''
-                    }`}
-                    onClick={() =>
-                      onResolve({
-                        variableName: newVariableName,
-                      })
-                    }
-                  >
-                    Add variable
-                  </button>
-                </div>
-              </Dialog.Panel>
-            </Transition.Child>
-          </div>
-        </div>
+                  Add variable
+                </ActionButton>
+                <ActionButton Element="button" onClick={() => onReject(false)}>
+                  Cancel
+                </ActionButton>
+              </div>
+            </form>
+          </Dialog.Panel>
+        </Transition.Child>
       </Dialog>
     </Transition>
   )

src/components/Stream.tsx

@@ -9,6 +9,9 @@ import { v4 as uuidv4 } from 'uuid'
 import { useStore } from '../useStore'
 import { getNormalisedCoordinates } from '../lib/utils'
 import Loading from './Loading'
+import { cameraMouseDragGuards } from 'lib/cameraControls'
+import { useGlobalStateContext } from 'hooks/useGlobalStateContext'
+import { CameraDragInteractionType_type } from '@kittycad/lib/dist/types/src/models'
 
 export const Stream = ({ className = '' }) => {
   const [isLoading, setIsLoading] = useState(true)
@@ -17,20 +20,26 @@ export const Stream = ({ className = '' }) => {
   const {
     mediaStream,
     engineCommandManager,
-    setIsMouseDownInStream,
+    setButtonDownInStream,
     didDragInStream,
     setDidDragInStream,
     streamDimensions,
+    isExecuting,
   } = useStore((s) => ({
     mediaStream: s.mediaStream,
     engineCommandManager: s.engineCommandManager,
-    isMouseDownInStream: s.isMouseDownInStream,
-    setIsMouseDownInStream: s.setIsMouseDownInStream,
+    setButtonDownInStream: s.setButtonDownInStream,
     fileId: s.fileId,
     didDragInStream: s.didDragInStream,
     setDidDragInStream: s.setDidDragInStream,
     streamDimensions: s.streamDimensions,
+    isExecuting: s.isExecuting,
   }))
+  const {
+    settings: {
+      context: { cameraControls },
+    },
+  } = useGlobalStateContext()
 
   useEffect(() => {
     if (
@@ -43,23 +52,29 @@ export const Stream = ({ className = '' }) => {
     videoRef.current.srcObject = mediaStream
   }, [mediaStream, engineCommandManager])
 
-  const handleMouseDown: MouseEventHandler<HTMLVideoElement> = ({
-    clientX,
-    clientY,
-    ctrlKey,
-  }) => {
+  const handleMouseDown: MouseEventHandler<HTMLVideoElement> = (e) => {
     if (!videoRef.current) return
     const { x, y } = getNormalisedCoordinates({
-      clientX,
-      clientY,
+      clientX: e.clientX,
+      clientY: e.clientY,
       el: videoRef.current,
       ...streamDimensions,
     })
-    console.log('click', x, y)
 
     const newId = uuidv4()
 
-    const interaction = ctrlKey ? 'pan' : 'rotate'
+    const interactionGuards = cameraMouseDragGuards[cameraControls]
+    let interaction: CameraDragInteractionType_type
+
+    if (interactionGuards.pan.callback(e)) {
+      interaction = 'pan'
+    } else if (interactionGuards.rotate.callback(e)) {
+      interaction = 'rotate'
+    } else if (interactionGuards.zoom.dragCallback(e)) {
+      interaction = 'zoom'
+    } else {
+      return
+    }
 
     engineCommandManager?.sendSceneCommand({
       type: 'modeling_cmd_req',
@@ -71,11 +86,13 @@ export const Stream = ({ className = '' }) => {
       cmd_id: newId,
     })
 
-    setIsMouseDownInStream(true)
+    setButtonDownInStream(e.button)
     setClickCoords({ x, y })
   }
 
   const handleScroll: WheelEventHandler<HTMLVideoElement> = (e) => {
+    if (!cameraMouseDragGuards[cameraControls].zoom.scrollCallback(e)) return
+
     e.preventDefault()
     engineCommandManager?.sendSceneCommand({
       type: 'modeling_cmd_req',
@@ -113,7 +130,7 @@ export const Stream = ({ className = '' }) => {
       cmd_id: newCmdId,
     })
 
-    setIsMouseDownInStream(false)
+    setButtonDownInStream(0)
     if (!didDragInStream) {
       engineCommandManager?.sendSceneCommand({
         type: 'modeling_cmd_req',
@@ -155,7 +172,8 @@ export const Stream = ({ className = '' }) => {
         onWheel={handleScroll}
         onPlay={() => setIsLoading(false)}
         onMouseMoveCapture={handleMouseMove}
-        className="w-full h-full"
+        className={`w-full h-full ${isExecuting && 'blur-md'}`}
+        style={{ transitionDuration: '200ms', transitionProperty: 'filter' }}
       />
       {isLoading && (
         <div className="text-center absolute top-1/2 left-1/2 -translate-x-1/2 -translate-y-1/2">

src/components/TextEditor.tsx

@@ -0,0 +1,267 @@
+import ReactCodeMirror, {
+  Extension,
+  ViewUpdate,
+  keymap,
+} from '@uiw/react-codemirror'
+import { FromServer, IntoServer } from 'editor/lsp/codec'
+import Server from '../editor/lsp/server'
+import Client from '../editor/lsp/client'
+import { TEST } from 'env'
+import { useCommandsContext } from 'hooks/useCommandsContext'
+import { useGlobalStateContext } from 'hooks/useGlobalStateContext'
+import { useConvertToVariable } from 'hooks/useToolbarGuards'
+import { Themes } from 'lib/theme'
+import { useMemo } from 'react'
+import { linter, lintGutter } from '@codemirror/lint'
+import { Selections, useStore } from 'useStore'
+import { LanguageServerClient } from 'editor/lsp'
+import kclLanguage from 'editor/lsp/language'
+import { isTauri } from 'lib/isTauri'
+import { useParams } from 'react-router-dom'
+import { writeTextFile } from '@tauri-apps/api/fs'
+import { PROJECT_ENTRYPOINT } from 'lib/tauriFS'
+import { toast } from 'react-hot-toast'
+import {
+  EditorView,
+  addLineHighlight,
+  lineHighlightField,
+} from 'editor/highlightextension'
+import { isOverlap } from 'lib/utils'
+import { kclErrToDiagnostic } from 'lang/errors'
+import { CSSRuleObject } from 'tailwindcss/types/config'
+
+export const editorShortcutMeta = {
+  formatCode: {
+    codeMirror: 'Alt-Shift-f',
+    display: 'Alt + Shift + F',
+  },
+  convertToVariable: {
+    codeMirror: 'Ctrl-Shift-c',
+    display: 'Ctrl + Shift + C',
+  },
+}
+
+export const TextEditor = ({
+  theme,
+}: {
+  theme: Themes.Light | Themes.Dark
+}) => {
+  const pathParams = useParams()
+  const {
+    code,
+    defferedSetCode,
+    editorView,
+    engineCommandManager,
+    formatCode,
+    isLSPServerReady,
+    selectionRanges,
+    selectionRangeTypeMap,
+    setEditorView,
+    setIsLSPServerReady,
+    setSelectionRanges,
+    sourceRangeMap,
+  } = useStore((s) => ({
+    code: s.code,
+    defferedCode: s.defferedCode,
+    defferedSetCode: s.defferedSetCode,
+    editorView: s.editorView,
+    engineCommandManager: s.engineCommandManager,
+    formatCode: s.formatCode,
+    isLSPServerReady: s.isLSPServerReady,
+    selectionRanges: s.selectionRanges,
+    selectionRangeTypeMap: s.selectionRangeTypeMap,
+    setCode: s.setCode,
+    setEditorView: s.setEditorView,
+    setIsLSPServerReady: s.setIsLSPServerReady,
+    setSelectionRanges: s.setSelectionRanges,
+    sourceRangeMap: s.sourceRangeMap,
+  }))
+
+  const {
+    settings: {
+      context: { textWrapping },
+    },
+  } = useGlobalStateContext()
+  const { setCommandBarOpen } = useCommandsContext()
+  const { enable: convertEnabled, handleClick: convertCallback } =
+    useConvertToVariable()
+
+  // So this is a bit weird, we need to initialize the lsp server and client.
+  // But the server happens async so we break this into two parts.
+  // Below is the client and server promise.
+  const { lspClient } = useMemo(() => {
+    const intoServer: IntoServer = new IntoServer()
+    const fromServer: FromServer = FromServer.create()
+    const client = new Client(fromServer, intoServer)
+    if (!TEST) {
+      Server.initialize(intoServer, fromServer).then((lspServer) => {
+        lspServer.start()
+        setIsLSPServerReady(true)
+      })
+    }
+
+    const lspClient = new LanguageServerClient({ client })
+    return { lspClient }
+  }, [setIsLSPServerReady])
+
+  // Here we initialize the plugin which will start the client.
+  // When we have multi-file support the name of the file will be a dep of
+  // this use memo, as well as the directory structure, which I think is
+  // a good setup becuase it will restart the client but not the server :)
+  // We do not want to restart the server, its just wasteful.
+  const kclLSP = useMemo(() => {
+    let plugin = null
+    if (isLSPServerReady && !TEST) {
+      // Set up the lsp plugin.
+      const lsp = kclLanguage({
+        // When we have more than one file, we'll need to change this.
+        documentUri: `file:///we-just-have-one-file-for-now.kcl`,
+        workspaceFolders: null,
+        client: lspClient,
+      })
+
+      plugin = lsp
+    }
+    return plugin
+  }, [lspClient, isLSPServerReady])
+
+  // const onChange = React.useCallback((value: string, viewUpdate: ViewUpdate) => {
+  const onChange = (value: string, viewUpdate: ViewUpdate) => {
+    defferedSetCode(value)
+    if (isTauri() && pathParams.id) {
+      // Save the file to disk
+      // Note that PROJECT_ENTRYPOINT is hardcoded until we support multiple files
+      writeTextFile(pathParams.id + '/' + PROJECT_ENTRYPOINT, value).catch(
+        (err) => {
+          // TODO: add Sentry per GH issue #254 (https://github.com/KittyCAD/modeling-app/issues/254)
+          console.error('error saving file', err)
+          toast.error('Error saving file, please check file permissions')
+        }
+      )
+    }
+    if (editorView) {
+      editorView?.dispatch({ effects: addLineHighlight.of([0, 0]) })
+    }
+  } //, []);
+  const onUpdate = (viewUpdate: ViewUpdate) => {
+    if (!editorView) {
+      setEditorView(viewUpdate.view)
+    }
+    const ranges = viewUpdate.state.selection.ranges
+
+    const isChange =
+      ranges.length !== selectionRanges.codeBasedSelections.length ||
+      ranges.some(({ from, to }, i) => {
+        return (
+          from !== selectionRanges.codeBasedSelections[i].range[0] ||
+          to !== selectionRanges.codeBasedSelections[i].range[1]
+        )
+      })
+
+    if (!isChange) return
+    const codeBasedSelections: Selections['codeBasedSelections'] = ranges.map(
+      ({ from, to }) => {
+        if (selectionRangeTypeMap[to]) {
+          return {
+            type: selectionRangeTypeMap[to],
+            range: [from, to],
+          }
+        }
+        return {
+          type: 'default',
+          range: [from, to],
+        }
+      }
+    )
+    const idBasedSelections = codeBasedSelections
+      .map(({ type, range }) => {
+        const hasOverlap = Object.entries(sourceRangeMap).filter(
+          ([_, sourceRange]) => {
+            return isOverlap(sourceRange, range)
+          }
+        )
+        if (hasOverlap.length) {
+          return {
+            type,
+            id: hasOverlap[0][0],
+          }
+        }
+      })
+      .filter(Boolean) as any
+
+    engineCommandManager?.cusorsSelected({
+      otherSelections: [],
+      idBasedSelections,
+    })
+
+    setSelectionRanges({
+      otherSelections: [],
+      codeBasedSelections,
+    })
+  }
+
+  const editorExtensions = useMemo(() => {
+    const extensions = [
+      lineHighlightField,
+      keymap.of([
+        {
+          key: 'Meta-k',
+          run: () => {
+            setCommandBarOpen(true)
+            return false
+          },
+        },
+        {
+          key: editorShortcutMeta.formatCode.codeMirror,
+          run: () => {
+            formatCode()
+            return true
+          },
+        },
+        {
+          key: editorShortcutMeta.convertToVariable.codeMirror,
+          run: () => {
+            if (convertEnabled) {
+              convertCallback()
+              return true
+            }
+            return false
+          },
+        },
+      ]),
+    ] as Extension[]
+
+    if (kclLSP) extensions.push(kclLSP)
+
+    // These extensions have proven to mess with vitest
+    if (!TEST) {
+      extensions.push(
+        lintGutter(),
+        linter((_view) => {
+          return kclErrToDiagnostic(useStore.getState().kclErrors)
+        })
+      )
+      if (textWrapping === 'On') extensions.push(EditorView.lineWrapping)
+    }
+
+    return extensions
+  }, [kclLSP, textWrapping])
+
+  return (
+    <div
+      id="code-mirror-override"
+      className="full-height-subtract"
+      style={{ '--height-subtract': '4.25rem' } as CSSRuleObject}
+    >
+      <ReactCodeMirror
+        className="h-full"
+        value={code}
+        extensions={editorExtensions}
+        onChange={onChange}
+        onUpdate={onUpdate}
+        theme={theme}
+        onCreateEditor={(_editorView) => setEditorView(_editorView)}
+      />
+    </div>
+  )
+}

src/components/Toolbar/ConvertVariable.tsx

@@ -1,61 +0,0 @@
-import { useState, useEffect } from 'react'
-import { create } from 'react-modal-promise'
-import { useStore } from '../../useStore'
-import { isNodeSafeToReplace } from '../../lang/queryAst'
-import { SetVarNameModal } from '../SetVarNameModal'
-import { moveValueIntoNewVariable } from '../../lang/modifyAst'
-
-const getModalInfo = create(SetVarNameModal as any)
-
-export const ConvertToVariable = () => {
-  const { guiMode, selectionRanges, ast, programMemory, updateAst } = useStore(
-    (s) => ({
-      guiMode: s.guiMode,
-      ast: s.ast,
-      updateAst: s.updateAst,
-      selectionRanges: s.selectionRanges,
-      programMemory: s.programMemory,
-    })
-  )
-  const [enableAngLen, setEnableAngLen] = useState(false)
-  useEffect(() => {
-    if (!ast) return
-
-    const { isSafe, value } = isNodeSafeToReplace(
-      ast,
-      selectionRanges.codeBasedSelections?.[0]?.range || []
-    )
-    const canReplace = isSafe && value.type !== 'Identifier'
-    const isOnlyOneSelection = selectionRanges.codeBasedSelections.length === 1
-
-    const _enableHorz = canReplace && isOnlyOneSelection
-    setEnableAngLen(_enableHorz)
-  }, [guiMode, selectionRanges])
-
-  return (
-    <button
-      onClick={async () => {
-        if (!ast) return
-        try {
-          const { variableName } = await getModalInfo({
-            valueName: 'var',
-          } as any)
-
-          const { modifiedAst: _modifiedAst } = moveValueIntoNewVariable(
-            ast,
-            programMemory,
-            selectionRanges.codeBasedSelections[0].range,
-            variableName
-          )
-
-          updateAst(_modifiedAst)
-        } catch (e) {
-          console.log('e', e)
-        }
-      }}
-      disabled={!enableAngLen}
-    >
-      ConvertToVariable
-    </button>
-  )
-}

src/editor/lsp/plugin.ts

@@ -208,7 +208,13 @@ export class LanguageServerPlugin implements PluginValue {
           filterText: filterText ?? label,
         }
         if (documentation) {
-          completion.info = formatContents(documentation)
+          completion.info = () => {
+            const htmlString = formatContents(documentation)
+            const htmlNode = document.createElement('div')
+            htmlNode.style.display = 'contents'
+            htmlNode.innerHTML = htmlString
+            return { dom: htmlNode }
+          }
         }
 
         return completion

src/env.ts

@@ -8,8 +8,6 @@ export const VITE_KC_API_WS_MODELING_URL = import.meta.env
   .VITE_KC_API_WS_MODELING_URL
 export const VITE_KC_API_BASE_URL = import.meta.env.VITE_KC_API_BASE_URL
 export const VITE_KC_SITE_BASE_URL = import.meta.env.VITE_KC_SITE_BASE_URL
-export const VITE_KC_CONNECTION_WEBRTC_REPORT_STATS_MS = import.meta.env
-  .VITE_KC_CONNECTION_WEBRTC_REPORT_STATS_MS
 export const VITE_KC_CONNECTION_TIMEOUT_MS = import.meta.env
   .VITE_KC_CONNECTION_TIMEOUT_MS
 export const VITE_KC_SENTRY_DSN = import.meta.env.VITE_KC_SENTRY_DSN

src/hooks/useToolbarGuards.ts

@@ -0,0 +1,56 @@
+import { SetVarNameModal } from 'components/SetVarNameModal'
+import { moveValueIntoNewVariable } from 'lang/modifyAst'
+import { isNodeSafeToReplace } from 'lang/queryAst'
+import { useEffect, useState } from 'react'
+import { create } from 'react-modal-promise'
+import { useStore } from 'useStore'
+
+const getModalInfo = create(SetVarNameModal as any)
+
+export function useConvertToVariable() {
+  const { guiMode, selectionRanges, ast, programMemory, updateAst } = useStore(
+    (s) => ({
+      guiMode: s.guiMode,
+      ast: s.ast,
+      updateAst: s.updateAst,
+      selectionRanges: s.selectionRanges,
+      programMemory: s.programMemory,
+    })
+  )
+  const [enable, setEnabled] = useState(false)
+  useEffect(() => {
+    if (!ast) return
+
+    const { isSafe, value } = isNodeSafeToReplace(
+      ast,
+      selectionRanges.codeBasedSelections?.[0]?.range || []
+    )
+    const canReplace = isSafe && value.type !== 'Identifier'
+    const isOnlyOneSelection = selectionRanges.codeBasedSelections.length === 1
+
+    const _enableHorz = canReplace && isOnlyOneSelection
+    setEnabled(_enableHorz)
+  }, [guiMode, selectionRanges])
+
+  const handleClick = async () => {
+    if (!ast) return
+    try {
+      const { variableName } = await getModalInfo({
+        valueName: 'var',
+      } as any)
+
+      const { modifiedAst: _modifiedAst } = moveValueIntoNewVariable(
+        ast,
+        programMemory,
+        selectionRanges.codeBasedSelections[0].range,
+        variableName
+      )
+
+      updateAst(_modifiedAst)
+    } catch (e) {
+      console.log('e', e)
+    }
+  }
+
+  return { enable, handleClick }
+}

src/index.css

@@ -82,11 +82,22 @@ code {
     monospace;
 }
 
+.full-height-subtract {
+  --height-subtract: 2.25rem;
+  height: 100%;
+  max-height: calc(100% - var(--height-subtract));
+}
+
 #code-mirror-override .cm-editor {
-  @apply bg-transparent;
+  @apply h-full bg-transparent;
 }
 
 #code-mirror-override .cm-scroller {
+  @apply h-full;
+}
+
+#code-mirror-override .cm-scroller::-webkit-scrollbar {
+  @apply h-0;
 }
 
 #code-mirror-override .cm-activeLine,
@@ -137,14 +148,39 @@ code {
 }
 
 #code-mirror-override .cm-tooltip {
-  font-size: 80%;
+  @apply text-xs shadow-md;
+  @apply bg-chalkboard-10 text-chalkboard-80;
+  @apply rounded-sm border-solid border border-chalkboard-40/30 border-l-liquid-10;
+}
+
+.dark #code-mirror-override .cm-tooltip {
+  @apply bg-chalkboard-110 text-chalkboard-40;
+  @apply border-chalkboard-70/20 border-l-liquid-70;
 }
 
 #code-mirror-override .cm-tooltip-hover {
+  @apply py-1 px-2 w-max max-w-md;
 }
 
-#code-mirror-override .cm-tooltip-hover .documentation {
-  padding: 5;
+#code-mirror-override .cm-completionInfo {
+  @apply px-4 rounded-l-none;
+  @apply bg-chalkboard-10 text-liquid-90;
+  @apply border-liquid-40/30;
+}
+
+.dark #code-mirror-override .cm-completionInfo {
+  @apply bg-liquid-120 text-liquid-50;
+  @apply border-liquid-90/60;
+}
+
+#code-mirror-override .cm-tooltip-autocomplete li {
+  @apply px-2 py-1;
+}
+#code-mirror-override .cm-tooltip-autocomplete li[aria-selected='true'] {
+  @apply bg-liquid-10 text-liquid-110;
+}
+.dark #code-mirror-override .cm-tooltip-autocomplete li[aria-selected='true'] {
+  @apply bg-liquid-100 text-liquid-20;
 }
 
 #code-mirror-override .cm-content {

src/lang/abstractSyntaxTree.test.ts

@@ -1564,7 +1564,7 @@ const key = 'c'`
       start: code.indexOf('\n// this is a comment'),
       end: code.indexOf('const key'),
       value: {
-        type: 'block',
+        type: 'blockComment',
         value: 'this is a comment',
       },
     }
@@ -1602,7 +1602,7 @@ const key = 'c'`
       start: 106,
       end: 166,
       value: {
-        type: 'block',
+        type: 'blockComment',
         value: 'this is\n      a comment\n      spanning a few lines',
       },
     })
@@ -1625,7 +1625,7 @@ const key = 'c'`
       start: 125,
       end: 141,
       value: {
-        type: 'block',
+        type: 'blockComment',
         value: 'a comment',
       },
     })

src/lang/recast.test.ts

@@ -318,9 +318,9 @@ describe('it recasts wrapped object expressions in pipe bodies with correct inde
   |> line({ to: [0.62, 4.15], tag: 'seg01' }, %)
   |> line([2.77, -1.24], %)
   |> angledLineThatIntersects({
-        angle: 201,
-        offset: -1.35,
-        intersectTag: 'seg01'
+       angle: 201,
+       offset: -1.35,
+       intersectTag: 'seg01'
      }, %)
   |> line([-0.42, -1.72], %)
 show(part001)`

src/lang/std/engineConnection.ts

@@ -1,20 +1,21 @@
 import { SourceRange } from 'lang/executor'
 import { Selections } from 'useStore'
-import {
-  VITE_KC_API_WS_MODELING_URL,
-  VITE_KC_CONNECTION_TIMEOUT_MS,
-  VITE_KC_CONNECTION_WEBRTC_REPORT_STATS_MS,
-} from 'env'
+import { VITE_KC_API_WS_MODELING_URL, VITE_KC_CONNECTION_TIMEOUT_MS } from 'env'
 import { Models } from '@kittycad/lib'
 import { exportSave } from 'lib/exportSave'
 import { v4 as uuidv4 } from 'uuid'
 import * as Sentry from '@sentry/react'
 
-interface ResultCommand {
+interface CommandInfo {
+  commandType: CommandTypes
+  range: SourceRange
+  parentId?: string
+}
+interface ResultCommand extends CommandInfo {
   type: 'result'
   data: any
 }
-interface PendingCommand {
+interface PendingCommand extends CommandInfo {
   type: 'pending'
   promise: Promise<any>
   resolve: (val: any) => void
@@ -34,6 +35,8 @@ interface NewTrackArgs {
 
 type WebSocketResponse = Models['OkWebSocketResponseData_type']
 
+type ClientMetrics = Models['ClientMetrics_type']
+
 // EngineConnection encapsulates the connection(s) to the Engine
 // for the EngineCommandManager; namely, the underlying WebSocket
 // and WebRTC connections.
@@ -53,6 +56,9 @@ export class EngineConnection {
   private onClose: (engineConnection: EngineConnection) => void
   private onNewTrack: (track: NewTrackArgs) => void
 
+  // TODO: actual type is ClientMetrics
+  private webrtcStatsCollector?: () => Promise<ClientMetrics>
+
   constructor({
     url,
     token,
@@ -188,15 +194,17 @@ export class EngineConnection {
         )
       }
 
-      Promise.all([
-        handshakeSpan.promise,
-        iceSpan.promise,
-        dataChannelSpan.promise,
-        mediaTrackSpan.promise,
-      ]).then(() => {
-        console.log('All spans finished, reporting')
-        webrtcMediaTransaction?.finish()
-      })
+      if (this.shouldTrace()) {
+        Promise.all([
+          handshakeSpan.promise,
+          iceSpan.promise,
+          dataChannelSpan.promise,
+          mediaTrackSpan.promise,
+        ]).then(() => {
+          console.log('All spans finished, reporting')
+          webrtcMediaTransaction?.finish()
+        })
+      }
 
       this.onWebsocketOpen(this)
     })
@@ -297,7 +305,9 @@ export class EngineConnection {
 
         this.pc.addEventListener('connectionstatechange', (event) => {
           if (this.pc?.iceConnectionState === 'connected') {
-            iceSpan.resolve?.()
+            if (this.shouldTrace()) {
+              iceSpan.resolve?.()
+            }
           }
         })
 
@@ -330,6 +340,17 @@ export class EngineConnection {
             })
           })
           .catch(console.log)
+      } else if (resp.type === 'metrics_request') {
+        if (this.webrtcStatsCollector === undefined) {
+          // TODO: Error message here?
+          return
+        }
+        this.webrtcStatsCollector().then((client_metrics) => {
+          this.send({
+            type: 'metrics_response',
+            metrics: client_metrics,
+          })
+        })
       }
 
       // TODO(paultag): This ought to be both controllable, as well as something
@@ -361,127 +382,58 @@ export class EngineConnection {
         })
       }
 
-      // Set up the background thread to keep an eye on statistical
-      // information about the WebRTC media stream from the server to
-      // us. We'll also eventually want more global statistical information,
-      // but this will give us a baseline.
-      if (parseInt(VITE_KC_CONNECTION_WEBRTC_REPORT_STATS_MS) !== 0) {
-        setInterval(() => {
-          if (this.pc === undefined) {
-            return
-          }
-          if (!this.shouldTrace()) {
+      this.webrtcStatsCollector = (): Promise<ClientMetrics> => {
+        return new Promise((resolve, reject) => {
+          if (mediaStream.getVideoTracks().length !== 1) {
+            reject(new Error('too many video tracks to report'))
             return
           }
 
-          // Use the WebRTC Statistics API to collect statistical information
-          // about the WebRTC connection we're using to report to Sentry.
-          mediaStream.getVideoTracks().forEach((videoTrack) => {
-            let trackStats = new Map<string, any>()
-            this.pc?.getStats(videoTrack).then((videoTrackStats) => {
-              // Sentry only allows 10 metrics per transaction. We're going
-              // to have to pick carefully here, eventually send like a prom
-              // file or something to the peer.
+          let videoTrack = mediaStream.getVideoTracks()[0]
+          this.pc?.getStats(videoTrack).then((videoTrackStats) => {
+            // TODO(paultag): this needs type information from the KittyCAD typescript
+            // library once it's updated
+            let client_metrics: ClientMetrics = {
+              rtc_frames_decoded: 0,
+              rtc_frames_dropped: 0,
+              rtc_frames_received: 0,
+              rtc_frames_per_second: 0,
+              rtc_freeze_count: 0,
+              rtc_jitter_sec: 0.0,
+              rtc_keyframes_decoded: 0,
+              rtc_total_freezes_duration_sec: 0.0,
+            }
 
-              const transaction = Sentry.startTransaction({
-                name: 'webrtc-stats',
-              })
-              videoTrackStats.forEach((videoTrackReport) => {
-                if (videoTrackReport.type === 'inbound-rtp') {
-                  // RTC Stream Info
-                  // transaction.setMeasurement(
-                  //   'mediaStreamTrack.framesDecoded',
-                  //   videoTrackReport.framesDecoded,
-                  //   'frame'
-                  // )
-                  transaction.setMeasurement(
-                    'rtcFramesDropped',
-                    videoTrackReport.framesDropped,
-                    ''
-                  )
-                  // transaction.setMeasurement(
-                  //   'mediaStreamTrack.framesReceived',
-                  //   videoTrackReport.framesReceived,
-                  //   'frame'
-                  // )
-                  transaction.setMeasurement(
-                    'rtcFramesPerSecond',
-                    videoTrackReport.framesPerSecond,
-                    'fps'
-                  )
-                  transaction.setMeasurement(
-                    'rtcFreezeCount',
-                    videoTrackReport.freezeCount,
-                    ''
-                  )
-                  transaction.setMeasurement(
-                    'rtcJitter',
-                    videoTrackReport.jitter,
-                    'second'
-                  )
-                  // transaction.setMeasurement(
-                  //   'mediaStreamTrack.jitterBufferDelay',
-                  //   videoTrackReport.jitterBufferDelay,
-                  //   ''
-                  // )
-                  // transaction.setMeasurement(
-                  //   'mediaStreamTrack.jitterBufferEmittedCount',
-                  //   videoTrackReport.jitterBufferEmittedCount,
-                  //   ''
-                  // )
-                  // transaction.setMeasurement(
-                  //   'mediaStreamTrack.jitterBufferMinimumDelay',
-                  //   videoTrackReport.jitterBufferMinimumDelay,
-                  //   ''
-                  // )
-                  // transaction.setMeasurement(
-                  //   'mediaStreamTrack.jitterBufferTargetDelay',
-                  //   videoTrackReport.jitterBufferTargetDelay,
-                  //   ''
-                  // )
-                  transaction.setMeasurement(
-                    'rtcKeyFramesDecoded',
-                    videoTrackReport.keyFramesDecoded,
-                    ''
-                  )
-                  transaction.setMeasurement(
-                    'rtcTotalFreezesDuration',
-                    videoTrackReport.totalFreezesDuration,
-                    'second'
-                  )
-                  // transaction.setMeasurement(
-                  //   'mediaStreamTrack.totalInterFrameDelay',
-                  //   videoTrackReport.totalInterFrameDelay,
-                  //   ''
-                  // )
-                  transaction.setMeasurement(
-                    'rtcTotalPausesDuration',
-                    videoTrackReport.totalPausesDuration,
-                    'second'
-                  )
-                  // transaction.setMeasurement(
-                  //   'mediaStreamTrack.totalProcessingDelay',
-                  //   videoTrackReport.totalProcessingDelay,
-                  //   'second'
-                  // )
-                } else if (videoTrackReport.type === 'transport') {
-                  // // Bytes i/o
-                  // transaction.setMeasurement(
-                  //   'mediaStreamTrack.bytesReceived',
-                  //   videoTrackReport.bytesReceived,
-                  //   'byte'
-                  // )
-                  // transaction.setMeasurement(
-                  //   'mediaStreamTrack.bytesSent',
-                  //   videoTrackReport.bytesSent,
-                  //   'byte'
-                  // )
-                }
-              })
-              transaction?.finish()
+            // TODO(paultag): Since we can technically have multiple WebRTC
+            // video tracks (even if the Server doesn't at the moment), we
+            // ought to send stats for every video track(?), and add the stream
+            // ID into it.  This raises the cardinality of collected metrics
+            // when/if we do, but for now, just report the one stream.
+
+            videoTrackStats.forEach((videoTrackReport) => {
+              if (videoTrackReport.type === 'inbound-rtp') {
+                client_metrics.rtc_frames_decoded =
+                  videoTrackReport.framesDecoded
+                client_metrics.rtc_frames_dropped =
+                  videoTrackReport.framesDropped
+                client_metrics.rtc_frames_received =
+                  videoTrackReport.framesReceived
+                client_metrics.rtc_frames_per_second =
+                  videoTrackReport.framesPerSecond || 0
+                client_metrics.rtc_freeze_count = videoTrackReport.freezeCount
+                client_metrics.rtc_jitter_sec = videoTrackReport.jitter
+                client_metrics.rtc_keyframes_decoded =
+                  videoTrackReport.keyFramesDecoded
+                client_metrics.rtc_total_freezes_duration_sec =
+                  videoTrackReport.totalFreezesDuration
+              } else if (videoTrackReport.type === 'transport') {
+                // videoTrackReport.bytesReceived,
+                // videoTrackReport.bytesSent,
+              }
             })
+            resolve(client_metrics)
           })
-        }, VITE_KC_CONNECTION_WEBRTC_REPORT_STATS_MS)
+        })
       }
 
       this.onNewTrack({
@@ -490,10 +442,6 @@ export class EngineConnection {
       })
     })
 
-    // During startup, we'll track the time from `connect` being called
-    // until the 'done' event fires.
-    let connectionStarted = new Date()
-
     this.pc.addEventListener('datachannel', (event) => {
       this.unreliableDataChannel = event.channel
 
@@ -537,6 +485,7 @@ export class EngineConnection {
     this.websocket = undefined
     this.pc = undefined
     this.unreliableDataChannel = undefined
+    this.webrtcStatsCollector = undefined
 
     this.onClose(this)
     this.ready = false
@@ -546,6 +495,8 @@ export class EngineConnection {
 export type EngineCommand = Models['WebSocketRequest_type']
 type ModelTypes = Models['OkModelingCmdResponse_type']['type']
 
+type CommandTypes = Models['ModelingCmd_type']['type']
+
 type UnreliableResponses = Extract<
   Models['OkModelingCmdResponse_type'],
   { type: 'highlight_set_entity' }
@@ -687,15 +638,22 @@ export class EngineCommandManager {
       const resolve = command.resolve
       this.artifactMap[id] = {
         type: 'result',
+        range: command.range,
+        commandType: command.commandType,
+        parentId: command.parentId ? command.parentId : undefined,
         data: modelingResponse,
       }
       resolve({
         id,
+        commandType: command.commandType,
+        range: command.range,
         data: modelingResponse,
       })
     } else {
       this.artifactMap[id] = {
         type: 'result',
+        commandType: command?.commandType,
+        range: command?.range,
         data: modelingResponse,
       }
     }
@@ -747,8 +705,29 @@ export class EngineCommandManager {
     delete this.unreliableSubscriptions[event][id]
   }
   endSession() {
-    // this.websocket?.close()
-    // socket.off('command')
+    // TODO: instead of sending a single command with `object_ids: Object.keys(this.artifactMap)`
+    // we need to loop over them each individualy because if the engine doesn't recognise a single
+    // id the whole command fails.
+    Object.entries(this.artifactMap).forEach(([id, artifact]) => {
+      const artifactTypesToDelete: ArtifactMap[string]['commandType'][] = [
+        // 'start_path' creates a new scene object for the path, which is why it needs to be deleted,
+        // however all of the segments in the path are its children so there don't need to be deleted.
+        // this fact is very opaque in the api and docs (as to what should can be deleted).
+        // Using an array is the list is likely to grow.
+        'start_path',
+      ]
+      if (!artifactTypesToDelete.includes(artifact.commandType)) return
+
+      const deletCmd: EngineCommand = {
+        type: 'modeling_cmd_req',
+        cmd_id: uuidv4(),
+        cmd: {
+          type: 'remove_scene_objects',
+          object_ids: [id],
+        },
+      }
+      this.engineConnection?.send(deletCmd)
+    })
   }
   cusorsSelected(selections: {
     otherSelections: Selections['otherSelections']
@@ -801,11 +780,20 @@ export class EngineCommandManager {
         JSON.stringify(command)
       )
       return Promise.resolve()
+    } else if (
+      cmd.type === 'mouse_move' &&
+      this.engineConnection.unreliableDataChannel
+    ) {
+      cmd.sequence = this.outSequence
+      this.outSequence++
+      this.engineConnection?.unreliableDataChannel?.send(
+        JSON.stringify(command)
+      )
+      return Promise.resolve()
     }
-    console.log('sending command', command)
     // since it's not mouse drag or highlighting send over TCP and keep track of the command
     this.engineConnection?.send(command)
-    return this.handlePendingCommand(command.cmd_id)
+    return this.handlePendingCommand(command.cmd_id, command.cmd)
   }
   sendModelingCommand({
     id,
@@ -823,15 +811,35 @@ export class EngineCommandManager {
       return Promise.resolve()
     }
     this.engineConnection?.send(command)
-    return this.handlePendingCommand(id)
+    if (typeof command !== 'string' && command.type === 'modeling_cmd_req') {
+      return this.handlePendingCommand(id, command?.cmd, range)
+    } else if (typeof command === 'string') {
+      const parseCommand: EngineCommand = JSON.parse(command)
+      if (parseCommand.type === 'modeling_cmd_req')
+        return this.handlePendingCommand(id, parseCommand?.cmd, range)
+    }
+    throw 'shouldnt reach here'
   }
-  handlePendingCommand(id: string) {
+  handlePendingCommand(
+    id: string,
+    command: Models['ModelingCmd_type'],
+    range?: SourceRange
+  ) {
     let resolve: (val: any) => void = () => {}
     const promise = new Promise((_resolve, reject) => {
       resolve = _resolve
     })
+    const getParentId = (): string | undefined => {
+      if (command.type === 'extend_path') {
+        return command.path
+      }
+      // TODO handle other commands that have a parent
+    }
     this.artifactMap[id] = {
+      range: range || [0, 0],
       type: 'pending',
+      commandType: command.type,
+      parentId: getParentId(),
       promise,
       resolve,
     }

src/lang/std/sketchConstraints.test.ts

@@ -59,19 +59,19 @@ describe('testing swaping out sketch calls with xLine/xLineTo', () => {
     `  |> lineTo({ to: [1, 1], tag: 'abc1' }, %)`,
     `  |> line({ to: [-2.04, -0.7], tag: 'abc2' }, %)`,
     `  |> angledLine({`,
-    `        angle: 157,`,
-    `        length: 1.69,`,
-    `        tag: 'abc3'`,
+    `       angle: 157,`,
+    `       length: 1.69,`,
+    `       tag: 'abc3'`,
     `     }, %)`,
     `  |> angledLineOfXLength({`,
-    `        angle: 217,`,
-    `        length: 0.86,`,
-    `        tag: 'abc4'`,
+    `       angle: 217,`,
+    `       length: 0.86,`,
+    `       tag: 'abc4'`,
     `     }, %)`,
     `  |> angledLineOfYLength({`,
-    `        angle: 104,`,
-    `        length: 1.58,`,
-    `        tag: 'abc5'`,
+    `       angle: 104,`,
+    `       length: 1.58,`,
+    `       tag: 'abc5'`,
     `     }, %)`,
     `  |> angledLineToX({ angle: 55, to: -2.89, tag: 'abc6' }, %)`,
     `  |> angledLineToY({ angle: 330, to: 2.53, tag: 'abc7' }, %)`,
@@ -144,9 +144,9 @@ describe('testing swaping out sketch calls with xLine/xLineTo', () => {
       inputCode: bigExample,
       callToSwap: [
         `angledLine({`,
-        `        angle: 157,`,
-        `        length: 1.69,`,
-        `        tag: 'abc3'`,
+        `       angle: 157,`,
+        `       length: 1.69,`,
+        `       tag: 'abc3'`,
         `     }, %)`,
       ].join('\n'),
       constraintType: 'horizontal',
@@ -172,9 +172,9 @@ describe('testing swaping out sketch calls with xLine/xLineTo', () => {
       inputCode: bigExample,
       callToSwap: [
         `angledLineOfXLength({`,
-        `        angle: 217,`,
-        `        length: 0.86,`,
-        `        tag: 'abc4'`,
+        `       angle: 217,`,
+        `       length: 0.86,`,
+        `       tag: 'abc4'`,
         `     }, %)`,
       ].join('\n'),
       constraintType: 'horizontal',
@@ -201,9 +201,9 @@ describe('testing swaping out sketch calls with xLine/xLineTo', () => {
       inputCode: bigExample,
       callToSwap: [
         `angledLineOfYLength({`,
-        `        angle: 104,`,
-        `        length: 1.58,`,
-        `        tag: 'abc5'`,
+        `       angle: 104,`,
+        `       length: 1.58,`,
+        `       tag: 'abc5'`,
         `     }, %)`,
       ].join('\n'),
       constraintType: 'vertical',

src/lang/std/sketchcombos.test.ts

@@ -133,64 +133,64 @@ const myAng2 = 134
 const part001 = startSketchAt([0, 0])
   |> line({ to: [1, 3.82], tag: 'seg01' }, %) // ln-should-get-tag
   |> angledLineToX([
-        -angleToMatchLengthX('seg01', myVar, %),
-        myVar
-    ], %) // ln-lineTo-xAbsolute should use angleToMatchLengthX helper
+       -angleToMatchLengthX('seg01', myVar, %),
+       myVar
+     ], %) // ln-lineTo-xAbsolute should use angleToMatchLengthX helper
   |> angledLineToY([
-        -angleToMatchLengthY('seg01', myVar, %),
-        myVar
-    ], %) // ln-lineTo-yAbsolute should use angleToMatchLengthY helper
+       -angleToMatchLengthY('seg01', myVar, %),
+       myVar
+     ], %) // ln-lineTo-yAbsolute should use angleToMatchLengthY helper
   |> angledLine([45, segLen('seg01', %)], %) // ln-lineTo-free should become angledLine
   |> angledLine([45, segLen('seg01', %)], %) // ln-angledLineToX-free should become angledLine
   |> angledLine([myAng, segLen('seg01', %)], %) // ln-angledLineToX-angle should become angledLine
   |> angledLineToX([
-        angleToMatchLengthX('seg01', myVar2, %),
-        myVar2
-    ], %) // ln-angledLineToX-xAbsolute should use angleToMatchLengthX to get angle
+       angleToMatchLengthX('seg01', myVar2, %),
+       myVar2
+     ], %) // ln-angledLineToX-xAbsolute should use angleToMatchLengthX to get angle
   |> angledLine([-45, segLen('seg01', %)], %) // ln-angledLineToY-free should become angledLine
   |> angledLine([myAng2, segLen('seg01', %)], %) // ln-angledLineToY-angle should become angledLine
   |> angledLineToY([
-        angleToMatchLengthY('seg01', myVar3, %),
-        myVar3
-    ], %) // ln-angledLineToY-yAbsolute should use angleToMatchLengthY to get angle
+       angleToMatchLengthY('seg01', myVar3, %),
+       myVar3
+     ], %) // ln-angledLineToY-yAbsolute should use angleToMatchLengthY to get angle
   |> line([
-        min(segLen('seg01', %), myVar),
-        legLen(segLen('seg01', %), myVar)
-    ], %) // ln-should use legLen for y
+       min(segLen('seg01', %), myVar),
+       legLen(segLen('seg01', %), myVar)
+     ], %) // ln-should use legLen for y
   |> line([
-        min(segLen('seg01', %), myVar),
-        -legLen(segLen('seg01', %), myVar)
-    ], %) // ln-legLen but negative
+       min(segLen('seg01', %), myVar),
+       -legLen(segLen('seg01', %), myVar)
+     ], %) // ln-legLen but negative
   |> angledLine([-112, segLen('seg01', %)], %) // ln-should become angledLine
   |> angledLine([myVar, segLen('seg01', %)], %) // ln-use segLen for secound arg
   |> angledLine([45, segLen('seg01', %)], %) // ln-segLen again
   |> angledLine([54, segLen('seg01', %)], %) // ln-should be transformed to angledLine
   |> angledLineOfXLength([
-        legAngX(segLen('seg01', %), myVar),
-        min(segLen('seg01', %), myVar)
-    ], %) // ln-should use legAngX to calculate angle
+       legAngX(segLen('seg01', %), myVar),
+       min(segLen('seg01', %), myVar)
+     ], %) // ln-should use legAngX to calculate angle
   |> angledLineOfXLength([
-        180 + legAngX(segLen('seg01', %), myVar),
-        min(segLen('seg01', %), myVar)
-    ], %) // ln-same as above but should have + 180 to match original quadrant
+       180 + legAngX(segLen('seg01', %), myVar),
+       min(segLen('seg01', %), myVar)
+     ], %) // ln-same as above but should have + 180 to match original quadrant
   |> line([
-        legLen(segLen('seg01', %), myVar),
-        min(segLen('seg01', %), myVar)
-    ], %) // ln-legLen again but yRelative
+       legLen(segLen('seg01', %), myVar),
+       min(segLen('seg01', %), myVar)
+     ], %) // ln-legLen again but yRelative
   |> line([
-        -legLen(segLen('seg01', %), myVar),
-        min(segLen('seg01', %), myVar)
-    ], %) // ln-negative legLen yRelative
+       -legLen(segLen('seg01', %), myVar),
+       min(segLen('seg01', %), myVar)
+     ], %) // ln-negative legLen yRelative
   |> angledLine([58, segLen('seg01', %)], %) // ln-angledLineOfYLength-free should become angledLine
   |> angledLine([myAng, segLen('seg01', %)], %) // ln-angledLineOfYLength-angle should become angledLine
   |> angledLineOfXLength([
-        legAngY(segLen('seg01', %), myVar),
-        min(segLen('seg01', %), myVar)
-    ], %) // ln-angledLineOfYLength-yRelative use legAngY
+       legAngY(segLen('seg01', %), myVar),
+       min(segLen('seg01', %), myVar)
+     ], %) // ln-angledLineOfYLength-yRelative use legAngY
   |> angledLineOfXLength([
-        270 + legAngY(segLen('seg01', %), myVar),
-        min(segLen('seg01', %), myVar)
-    ], %) // ln-angledLineOfYLength-yRelative with angle > 90 use binExp
+       270 + legAngY(segLen('seg01', %), myVar),
+       min(segLen('seg01', %), myVar)
+     ], %) // ln-angledLineOfYLength-yRelative with angle > 90 use binExp
   |> xLine(segLen('seg01', %), %) // ln-xLine-free should sub in segLen
   |> yLine(segLen('seg01', %), %) // ln-yLine-free should sub in segLen
   |> xLine(segLen('seg01', %), %) // ln-xLineTo-free should convert to xLine
@@ -406,9 +406,9 @@ show(part001)`
         'setVertDistance'
       )
       expect(expectedCode).toContain(`|> lineTo([
-        lastSegX(%) + myVar,
-        segEndY('seg01', %) + 2.93
-    ], %) // xRelative`)
+       lastSegX(%) + myVar,
+       segEndY('seg01', %) + 2.93
+     ], %) // xRelative`)
     })
     it('testing for yRelative to horizontal distance', async () => {
       const expectedCode = await helperThing(
@@ -417,9 +417,9 @@ show(part001)`
         'setHorzDistance'
       )
       expect(expectedCode).toContain(`|> lineTo([
-        segEndX('seg01', %) + 2.6,
-        lastSegY(%) + myVar
-    ], %) // yRelative`)
+       segEndX('seg01', %) + 2.6,
+       lastSegY(%) + myVar
+     ], %) // yRelative`)
     })
   })
 })

src/lang/std/sketchcombos.ts

@@ -1426,7 +1426,6 @@ export function transformAstSketchLines({
   selectionRanges.codeBasedSelections.forEach(({ range }, index) => {
     const callBack = transformInfos?.[index].createNode
     const transformTo = transformInfos?.[index].tooltip
-    console.log('transformTo', transformInfos)
     if (!callBack || !transformTo) throw new Error('no callback helper')
 
     const getNode = getNodeFromPathCurry(

src/lib/cameraControls.ts

@@ -0,0 +1,133 @@
+const noModifiersPressed = (e: React.MouseEvent) =>
+  !e.ctrlKey && !e.shiftKey && !e.altKey && !e.metaKey
+
+export type CADProgram =
+  | 'KittyCAD'
+  | 'OnShape'
+  | 'Solidworks'
+  | 'NX'
+  | 'Creo'
+  | 'AutoCAD'
+
+export const cadPrograms: CADProgram[] = [
+  'KittyCAD',
+  'OnShape',
+  'Solidworks',
+  'NX',
+  'Creo',
+  'AutoCAD',
+]
+
+interface MouseGuardHandler {
+  description: string
+  callback: (e: React.MouseEvent) => boolean
+}
+
+interface MouseGuardZoomHandler {
+  description: string
+  dragCallback: (e: React.MouseEvent) => boolean
+  scrollCallback: (e: React.MouseEvent) => boolean
+}
+
+interface MouseGuard {
+  pan: MouseGuardHandler
+  zoom: MouseGuardZoomHandler
+  rotate: MouseGuardHandler
+}
+
+export const cameraMouseDragGuards: Record<CADProgram, MouseGuard> = {
+  KittyCAD: {
+    pan: {
+      description: 'Right click + Shift + drag or middle click + drag',
+      callback: (e) =>
+        (e.button === 3 && noModifiersPressed(e)) ||
+        (e.button === 2 && e.shiftKey),
+    },
+    zoom: {
+      description: 'Scroll wheel or Right click + Ctrl + drag',
+      dragCallback: (e) => e.button === 2 && e.ctrlKey,
+      scrollCallback: () => true,
+    },
+    rotate: {
+      description: 'Right click + drag',
+      callback: (e) => e.button === 2 && noModifiersPressed(e),
+    },
+  },
+  OnShape: {
+    pan: {
+      description: 'Right click + Ctrl + drag or middle click + drag',
+      callback: (e) =>
+        (e.button === 2 && e.ctrlKey) ||
+        (e.button === 3 && noModifiersPressed(e)),
+    },
+    zoom: {
+      description: 'Scroll wheel',
+      dragCallback: () => false,
+      scrollCallback: () => true,
+    },
+    rotate: {
+      description: 'Right click + drag',
+      callback: (e) => e.button === 2 && noModifiersPressed(e),
+    },
+  },
+  Solidworks: {
+    pan: {
+      description: 'Right click + Ctrl + drag',
+      callback: (e) => e.button === 2 && e.ctrlKey,
+    },
+    zoom: {
+      description: 'Scroll wheel or Middle click + Shift + drag',
+      dragCallback: (e) => e.button === 3 && e.shiftKey,
+      scrollCallback: () => true,
+    },
+    rotate: {
+      description: 'Middle click + drag',
+      callback: (e) => e.button === 3 && noModifiersPressed(e),
+    },
+  },
+  NX: {
+    pan: {
+      description: 'Middle click + Shift + drag',
+      callback: (e) => e.button === 3 && e.shiftKey,
+    },
+    zoom: {
+      description: 'Scroll wheel or Middle click + Ctrl + drag',
+      dragCallback: (e) => e.button === 3 && e.ctrlKey,
+      scrollCallback: () => true,
+    },
+    rotate: {
+      description: 'Middle click + drag',
+      callback: (e) => e.button === 3 && noModifiersPressed(e),
+    },
+  },
+  Creo: {
+    pan: {
+      description: 'Middle click + Shift + drag',
+      callback: (e) => e.button === 3 && e.shiftKey,
+    },
+    zoom: {
+      description: 'Scroll wheel or Middle click + Ctrl + drag',
+      dragCallback: (e) => e.button === 3 && e.ctrlKey,
+      scrollCallback: () => true,
+    },
+    rotate: {
+      description: 'Middle click + drag',
+      callback: (e) => e.button === 3 && noModifiersPressed(e),
+    },
+  },
+  AutoCAD: {
+    pan: {
+      description: 'Middle click + drag',
+      callback: (e) => e.button === 3 && noModifiersPressed(e),
+    },
+    zoom: {
+      description: 'Scroll wheel',
+      dragCallback: () => false,
+      scrollCallback: () => true,
+    },
+    rotate: {
+      description: 'Middle click + Shift + drag',
+      callback: (e) => e.button === 3 && e.shiftKey,
+    },
+  },
+}

src/lib/utils.ts

@@ -56,6 +56,27 @@ export function throttle<T>(
   return throttled
 }
 
+// takes a function and executes it after the wait time, if the function is called again before the wait time is up, the timer is reset
+export function defferExecution<T>(func: (args: T) => any, wait: number) {
+  let timeout: ReturnType<typeof setTimeout> | null
+  let latestArgs: T
+
+  function later() {
+    timeout = null
+    func(latestArgs)
+  }
+
+  function deffered(args: T) {
+    latestArgs = args
+    if (timeout) {
+      clearTimeout(timeout)
+    }
+    timeout = setTimeout(later, wait)
+  }
+
+  return deffered
+}
+
 export function getNormalisedCoordinates({
   clientX,
   clientY,

src/machines/settingsMachine.ts

@@ -1,29 +1,54 @@
 import { assign, createMachine } from 'xstate'
-import { BaseUnit, baseUnitsUnion } from '../useStore'
 import { CommandBarMeta } from '../lib/commands'
 import { Themes, getSystemTheme, setThemeClass } from '../lib/theme'
+import { CADProgram, cadPrograms } from 'lib/cameraControls'
+
+export const DEFAULT_PROJECT_NAME = 'project-$nnn'
 
 export enum UnitSystem {
   Imperial = 'imperial',
   Metric = 'metric',
 }
 
+export const baseUnits = {
+  imperial: ['in', 'ft'],
+  metric: ['mm', 'cm', 'm'],
+} as const
+
+export type BaseUnit = 'in' | 'ft' | 'mm' | 'cm' | 'm'
+
+export const baseUnitsUnion = Object.values(baseUnits).flatMap((v) => v)
+
+export type Toggle = 'On' | 'Off'
+
 export const SETTINGS_PERSIST_KEY = 'SETTINGS_PERSIST_KEY'
 
 export const settingsCommandBarMeta: CommandBarMeta = {
-  'Set Theme': {
-    displayValue: (args: string[]) => 'Change the app theme',
+  'Set Base Unit': {
+    displayValue: (args: string[]) => 'Set your default base unit',
     args: [
       {
-        name: 'theme',
+        name: 'baseUnit',
         type: 'select',
-        defaultValue: 'theme',
-        options: Object.values(Themes).map((v) => ({ name: v })) as {
-          name: string
-        }[],
+        defaultValue: 'baseUnit',
+        options: Object.values(baseUnitsUnion).map((v) => ({ name: v })),
       },
     ],
   },
+  'Set Camera Controls': {
+    displayValue: (args: string[]) => 'Set your camera controls',
+    args: [
+      {
+        name: 'cameraControls',
+        type: 'select',
+        defaultValue: 'cameraControls',
+        options: Object.values(cadPrograms).map((v) => ({ name: v })),
+      },
+    ],
+  },
+  'Set Default Directory': {
+    hide: 'both',
+  },
   'Set Default Project Name': {
     displayValue: (args: string[]) => 'Set a new default project name',
     hide: 'web',
@@ -37,9 +62,33 @@ export const settingsCommandBarMeta: CommandBarMeta = {
       },
     ],
   },
-  'Set Default Directory': {
+  'Set Onboarding Status': {
     hide: 'both',
   },
+  'Set Text Wrapping': {
+    displayValue: (args: string[]) => 'Set whether text in the editor wraps',
+    args: [
+      {
+        name: 'textWrapping',
+        type: 'select',
+        defaultValue: 'textWrapping',
+        options: [{ name: 'On' }, { name: 'Off' }],
+      },
+    ],
+  },
+  'Set Theme': {
+    displayValue: (args: string[]) => 'Change the app theme',
+    args: [
+      {
+        name: 'theme',
+        type: 'select',
+        defaultValue: 'theme',
+        options: Object.values(Themes).map((v): { name: string } => ({
+          name: v,
+        })),
+      },
+    ],
+  },
   'Set Unit System': {
     displayValue: (args: string[]) => 'Set your default unit system',
     args: [
@@ -51,20 +100,6 @@ export const settingsCommandBarMeta: CommandBarMeta = {
       },
     ],
   },
-  'Set Base Unit': {
-    displayValue: (args: string[]) => 'Set your default base unit',
-    args: [
-      {
-        name: 'baseUnit',
-        type: 'select',
-        defaultValue: 'baseUnit',
-        options: Object.values(baseUnitsUnion).map((v) => ({ name: v })),
-      },
-    ],
-  },
-  'Set Onboarding Status': {
-    hide: 'both',
-  },
 }
 
 export const settingsMachine = createMachine(
@@ -73,35 +108,34 @@ export const settingsMachine = createMachine(
     id: 'Settings',
     predictableActionArguments: true,
     context: {
-      theme: Themes.System,
-      defaultProjectName: '',
-      unitSystem: UnitSystem.Imperial,
       baseUnit: 'in' as BaseUnit,
+      cameraControls: 'KittyCAD' as CADProgram,
       defaultDirectory: '',
-      showDebugPanel: false,
+      defaultProjectName: DEFAULT_PROJECT_NAME,
       onboardingStatus: '',
+      showDebugPanel: false,
+      textWrapping: 'On' as Toggle,
+      theme: Themes.System,
+      unitSystem: UnitSystem.Imperial,
     },
     initial: 'idle',
     states: {
       idle: {
         entry: ['setThemeClass'],
         on: {
-          'Set Theme': {
+          'Set Base Unit': {
             actions: [
-              assign({
-                theme: (_, event) => event.data.theme,
-              }),
+              assign({ baseUnit: (_, event) => event.data.baseUnit }),
               'persistSettings',
               'toastSuccess',
-              'setThemeClass',
             ],
             target: 'idle',
             internal: true,
           },
-          'Set Default Project Name': {
+          'Set Camera Controls': {
             actions: [
               assign({
-                defaultProjectName: (_, event) => event.data.defaultProjectName,
+                cameraControls: (_, event) => event.data.cameraControls,
               }),
               'persistSettings',
               'toastSuccess',
@@ -120,12 +154,11 @@ export const settingsMachine = createMachine(
             target: 'idle',
             internal: true,
           },
-          'Set Unit System': {
+          'Set Default Project Name': {
             actions: [
               assign({
-                unitSystem: (_, event) => event.data.unitSystem,
-                baseUnit: (_, event) =>
-                  event.data.unitSystem === 'imperial' ? 'in' : 'mm',
+                defaultProjectName: (_, event) =>
+                  event.data.defaultProjectName.trim() || DEFAULT_PROJECT_NAME,
               }),
               'persistSettings',
               'toastSuccess',
@@ -133,9 +166,46 @@ export const settingsMachine = createMachine(
             target: 'idle',
             internal: true,
           },
-          'Set Base Unit': {
+          'Set Onboarding Status': {
             actions: [
-              assign({ baseUnit: (_, event) => event.data.baseUnit }),
+              assign({
+                onboardingStatus: (_, event) => event.data.onboardingStatus,
+              }),
+              'persistSettings',
+            ],
+            target: 'idle',
+            internal: true,
+          },
+          'Set Text Wrapping': {
+            actions: [
+              assign({
+                textWrapping: (_, event) => event.data.textWrapping,
+              }),
+              'persistSettings',
+              'toastSuccess',
+            ],
+            target: 'idle',
+            internal: true,
+          },
+          'Set Theme': {
+            actions: [
+              assign({
+                theme: (_, event) => event.data.theme,
+              }),
+              'persistSettings',
+              'toastSuccess',
+              'setThemeClass',
+            ],
+            target: 'idle',
+            internal: true,
+          },
+          'Set Unit System': {
+            actions: [
+              assign({
+                unitSystem: (_, event) => event.data.unitSystem,
+                baseUnit: (_, event) =>
+                  event.data.unitSystem === 'imperial' ? 'in' : 'mm',
+              }),
               'persistSettings',
               'toastSuccess',
             ],
@@ -155,34 +225,26 @@ export const settingsMachine = createMachine(
             target: 'idle',
             internal: true,
           },
-          'Set Onboarding Status': {
-            actions: [
-              assign({
-                onboardingStatus: (_, event) => event.data.onboardingStatus,
-              }),
-              'persistSettings',
-            ],
-            target: 'idle',
-            internal: true,
-          },
         },
       },
     },
     tsTypes: {} as import('./settingsMachine.typegen').Typegen0,
     schema: {
       events: {} as
-        | { type: 'Set Theme'; data: { theme: Themes } }
+        | { type: 'Set Base Unit'; data: { baseUnit: BaseUnit } }
+        | { type: 'Set Camera Controls'; data: { cameraControls: CADProgram } }
+        | { type: 'Set Default Directory'; data: { defaultDirectory: string } }
         | {
             type: 'Set Default Project Name'
             data: { defaultProjectName: string }
           }
-        | { type: 'Set Default Directory'; data: { defaultDirectory: string } }
+        | { type: 'Set Onboarding Status'; data: { onboardingStatus: string } }
+        | { type: 'Set Text Wrapping'; data: { textWrapping: Toggle } }
+        | { type: 'Set Theme'; data: { theme: Themes } }
         | {
             type: 'Set Unit System'
             data: { unitSystem: UnitSystem }
           }
-        | { type: 'Set Base Unit'; data: { baseUnit: BaseUnit } }
-        | { type: 'Set Onboarding Status'; data: { onboardingStatus: string } }
         | { type: 'Toggle Debug Panel' },
     },
   },

src/machines/settingsMachine.typegen.ts

@@ -15,25 +15,31 @@ export interface Typegen0 {
   eventsCausingActions: {
     persistSettings:
       | 'Set Base Unit'
+      | 'Set Camera Controls'
       | 'Set Default Directory'
       | 'Set Default Project Name'
       | 'Set Onboarding Status'
+      | 'Set Text Wrapping'
       | 'Set Theme'
       | 'Set Unit System'
       | 'Toggle Debug Panel'
     setThemeClass:
       | 'Set Base Unit'
+      | 'Set Camera Controls'
       | 'Set Default Directory'
       | 'Set Default Project Name'
       | 'Set Onboarding Status'
+      | 'Set Text Wrapping'
       | 'Set Theme'
       | 'Set Unit System'
       | 'Toggle Debug Panel'
       | 'xstate.init'
     toastSuccess:
       | 'Set Base Unit'
+      | 'Set Camera Controls'
       | 'Set Default Directory'
       | 'Set Default Project Name'
+      | 'Set Text Wrapping'
       | 'Set Theme'
       | 'Set Unit System'
       | 'Toggle Debug Panel'

src/routes/Home.tsx

@@ -28,6 +28,7 @@ import {
 import useStateMachineCommands from '../hooks/useStateMachineCommands'
 import { useGlobalStateContext } from 'hooks/useGlobalStateContext'
 import { useCommandsContext } from 'hooks/useCommandsContext'
+import { DEFAULT_PROJECT_NAME } from 'machines/settingsMachine'
 
 // This route only opens in the Tauri desktop context for now,
 // as defined in Router.tsx, so we can use the Tauri APIs and types.
@@ -38,6 +39,7 @@ const Home = () => {
   const {
     settings: {
       context: { defaultDirectory, defaultProjectName },
+      send: sendToSettings,
     },
   } = useGlobalStateContext()
 
@@ -71,16 +73,33 @@ const Home = () => {
         context: ContextFrom<typeof homeMachine>,
         event: EventFrom<typeof homeMachine, 'Create project'>
       ) => {
-        let name =
+        let name = (
           event.data && 'name' in event.data
             ? event.data.name
             : defaultProjectName
+        ).trim()
+        let shouldUpdateDefaultProjectName = false
+
+        // If there is no default project name, flag it to be set to the default
+        if (!name) {
+          name = DEFAULT_PROJECT_NAME
+          shouldUpdateDefaultProjectName = true
+        }
+
         if (doesProjectNameNeedInterpolated(name)) {
           const nextIndex = await getNextProjectIndex(name, projects)
           name = interpolateProjectNameWithIndex(name, nextIndex)
         }
 
         await createNewProject(context.defaultDirectory + '/' + name)
+
+        if (shouldUpdateDefaultProjectName) {
+          sendToSettings({
+            type: 'Set Default Project Name',
+            data: { defaultProjectName: DEFAULT_PROJECT_NAME },
+          })
+        }
+
         return `Successfully created "${name}"`
       },
       renameProject: async (

src/routes/Onboarding/Camera.tsx

@@ -4,8 +4,8 @@ import { onboardingPaths, useDismiss, useNextClick } from '.'
 import { useStore } from '../../useStore'
 
 export default function Units() {
-  const { isMouseDownInStream } = useStore((s) => ({
-    isMouseDownInStream: s.isMouseDownInStream,
+  const { buttonDownInStream } = useStore((s) => ({
+    buttonDownInStream: s.buttonDownInStream,
   }))
   const dismiss = useDismiss()
   const next = useNextClick(onboardingPaths.SKETCHING)
@@ -15,7 +15,7 @@ export default function Units() {
       <div
         className={
           'max-w-2xl flex flex-col justify-center bg-chalkboard-10 dark:bg-chalkboard-90 p-8 rounded' +
-          (isMouseDownInStream ? '' : ' pointer-events-auto')
+          (buttonDownInStream ? '' : ' pointer-events-auto')
         }
       >
         <h1 className="text-2xl font-bold">Camera</h1>

src/routes/Onboarding/Units.tsx

@@ -1,5 +1,5 @@
 import { faArrowRight, faXmark } from '@fortawesome/free-solid-svg-icons'
-import { BaseUnit, baseUnits } from '../../useStore'
+import { BaseUnit, baseUnits } from '../../machines/settingsMachine'
 import { ActionButton } from '../../components/ActionButton'
 import { SettingsSection } from '../Settings'
 import { Toggle } from '../../components/Toggle/Toggle'

src/routes/Settings.tsx

@@ -6,13 +6,22 @@ import {
 import { ActionButton } from '../components/ActionButton'
 import { AppHeader } from '../components/AppHeader'
 import { open } from '@tauri-apps/api/dialog'
-import { BaseUnit, baseUnits } from '../useStore'
+import {
+  BaseUnit,
+  DEFAULT_PROJECT_NAME,
+  baseUnits,
+} from '../machines/settingsMachine'
 import { Toggle } from '../components/Toggle/Toggle'
 import { useLocation, useNavigate, useRouteLoaderData } from 'react-router-dom'
 import { useHotkeys } from 'react-hotkeys-hook'
 import { IndexLoaderData, paths } from '../Router'
 import { Themes } from '../lib/theme'
 import { useGlobalStateContext } from 'hooks/useGlobalStateContext'
+import {
+  CADProgram,
+  cadPrograms,
+  cameraMouseDragGuards,
+} from 'lib/cameraControls'
 import { UnitSystem } from 'machines/settingsMachine'
 
 export const Settings = () => {
@@ -25,12 +34,13 @@ export const Settings = () => {
       send,
       state: {
         context: {
+          baseUnit,
+          cameraControls,
+          defaultDirectory,
           defaultProjectName,
           showDebugPanel,
-          defaultDirectory,
-          unitSystem,
-          baseUnit,
           theme,
+          unitSystem,
         },
       },
     },
@@ -82,6 +92,42 @@ export const Settings = () => {
           , and start a discussion if you don't see it! Your feedback will help
           us prioritize what to build next.
         </p>
+        <SettingsSection
+          title="Camera Controls"
+          description="How you want to control the camera in the 3D view"
+        >
+          <select
+            id="camera-controls"
+            className="block w-full px-3 py-1 border border-chalkboard-30 bg-transparent"
+            value={cameraControls}
+            onChange={(e) => {
+              send({
+                type: 'Set Camera Controls',
+                data: { cameraControls: e.target.value as CADProgram },
+              })
+            }}
+          >
+            {cadPrograms.map((program) => (
+              <option key={program} value={program}>
+                {program}
+              </option>
+            ))}
+          </select>
+          <ul className="text-sm my-2 mx-4 leading-relaxed">
+            <li>
+              <strong>Pan:</strong>{' '}
+              {cameraMouseDragGuards[cameraControls].pan.description}
+            </li>
+            <li>
+              <strong>Zoom:</strong>{' '}
+              {cameraMouseDragGuards[cameraControls].zoom.description}
+            </li>
+            <li>
+              <strong>Rotate:</strong>{' '}
+              {cameraMouseDragGuards[cameraControls].rotate.description}
+            </li>
+          </ul>
+        </SettingsSection>
         {(window as any).__TAURI__ && (
           <>
             <SettingsSection
@@ -118,10 +164,14 @@ export const Settings = () => {
                 className="block w-full px-3 py-1 border border-chalkboard-30 bg-transparent"
                 defaultValue={defaultProjectName}
                 onBlur={(e) => {
+                  const newValue = e.target.value.trim() || DEFAULT_PROJECT_NAME
                   send({
                     type: 'Set Default Project Name',
-                    data: { defaultProjectName: e.target.value },
+                    data: {
+                      defaultProjectName: newValue,
+                    },
                   })
+                  e.target.value = newValue
                 }}
                 autoCapitalize="off"
                 autoComplete="off"

src/useStore.ts

@@ -19,6 +19,7 @@ import {
   EngineCommandManager,
 } from './lang/std/engineConnection'
 import { KCLError } from './lang/errors'
+import { defferExecution } from 'lib/utils'
 
 export type Selection = {
   type: 'default' | 'line-end' | 'line-mid'
@@ -94,15 +95,6 @@ export type GuiModes =
       position: Position
     }
 
-export const baseUnits = {
-  imperial: ['in', 'ft'],
-  metric: ['mm', 'cm', 'm'],
-} as const
-
-export type BaseUnit = 'in' | 'ft' | 'mm' | 'cm' | 'm'
-
-export const baseUnitsUnion = Object.values(baseUnits).flatMap((v) => v)
-
 export type PaneType =
   | 'code'
   | 'variables'
@@ -141,7 +133,9 @@ export interface StoreState {
   ) => void
   updateAstAsync: (ast: Program, focusPath?: PathToNode) => void
   code: string
+  defferedCode: string
   setCode: (code: string) => void
+  defferedSetCode: (code: string) => void
   formatCode: () => void
   errorState: {
     isError: boolean
@@ -166,8 +160,8 @@ export interface StoreState {
   setIsStreamReady: (isStreamReady: boolean) => void
   isLSPServerReady: boolean
   setIsLSPServerReady: (isLSPServerReady: boolean) => void
-  isMouseDownInStream: boolean
-  setIsMouseDownInStream: (isMouseDownInStream: boolean) => void
+  buttonDownInStream: number
+  setButtonDownInStream: (buttonDownInStream: number) => void
   didDragInStream: boolean
   setDidDragInStream: (didDragInStream: boolean) => void
   fileId: string
@@ -177,6 +171,8 @@ export interface StoreState {
     streamWidth: number
     streamHeight: number
   }) => void
+  isExecuting: boolean
+  setIsExecuting: (isExecuting: boolean) => void
 
   showHomeMenu: boolean
   setHomeShowMenu: (showMenu: boolean) => void
@@ -195,193 +191,207 @@ let pendingAstUpdates: number[] = []
 
 export const useStore = create<StoreState>()(
   persist(
-    (set, get) => ({
-      editorView: null,
-      setEditorView: (editorView) => {
-        set({ editorView })
-      },
-      highlightRange: [0, 0],
-      setHighlightRange: (selection) => {
-        set({ highlightRange: selection })
-        const editorView = get().editorView
-        if (editorView) {
-          editorView.dispatch({ effects: addLineHighlight.of(selection) })
-        }
-      },
-      setCursor: (selections) => {
-        const { editorView } = get()
-        if (!editorView) return
-        const ranges: ReturnType<typeof EditorSelection.cursor>[] = []
-        const selectionRangeTypeMap: { [key: number]: Selection['type'] } = {}
-        set({ selectionRangeTypeMap })
-        selections.codeBasedSelections.forEach(({ range, type }) => {
-          if (range?.[1]) {
-            ranges.push(EditorSelection.cursor(range[1]))
-            selectionRangeTypeMap[range[1]] = type
+    (set, get) => {
+      const setDefferedCode = defferExecution(
+        (code: string) => set({ defferedCode: code }),
+        600
+      )
+      return {
+        editorView: null,
+        setEditorView: (editorView) => {
+          set({ editorView })
+        },
+        highlightRange: [0, 0],
+        setHighlightRange: (selection) => {
+          set({ highlightRange: selection })
+          const editorView = get().editorView
+          if (editorView) {
+            editorView.dispatch({ effects: addLineHighlight.of(selection) })
           }
-        })
-        setTimeout(() => {
-          editorView.dispatch({
-            selection: EditorSelection.create(
-              ranges,
-              selections.codeBasedSelections.length - 1
-            ),
+        },
+        setCursor: (selections) => {
+          const { editorView } = get()
+          if (!editorView) return
+          const ranges: ReturnType<typeof EditorSelection.cursor>[] = []
+          const selectionRangeTypeMap: { [key: number]: Selection['type'] } = {}
+          set({ selectionRangeTypeMap })
+          selections.codeBasedSelections.forEach(({ range, type }) => {
+            if (range?.[1]) {
+              ranges.push(EditorSelection.cursor(range[1]))
+              selectionRangeTypeMap[range[1]] = type
+            }
           })
-        })
-      },
-      setCursor2: (codeSelections) => {
-        const currestSelections = get().selectionRanges
-        const code = get().code
-        if (!codeSelections) {
-          get().setCursor({
-            otherSelections: currestSelections.otherSelections,
-            codeBasedSelections: [
-              { range: [0, code.length - 1], type: 'default' },
-            ],
-          })
-          return
-        }
-        const selections: Selections = {
-          ...currestSelections,
-          codeBasedSelections: get().isShiftDown
-            ? [...currestSelections.codeBasedSelections, codeSelections]
-            : [codeSelections],
-        }
-        get().setCursor(selections)
-      },
-      selectionRangeTypeMap: {},
-      selectionRanges: {
-        otherSelections: [],
-        codeBasedSelections: [],
-      },
-      setSelectionRanges: (selectionRanges) =>
-        set({ selectionRanges, selectionRangeTypeMap: {} }),
-      guiMode: { mode: 'default' },
-      lastGuiMode: { mode: 'default' },
-      setGuiMode: (guiMode) => {
-        set({ guiMode })
-      },
-      logs: [],
-      addLog: (log) => {
-        if (Array.isArray(log)) {
-          const cleanLog: any = log.map(({ __geoMeta, ...rest }) => rest)
-          set((state) => ({ logs: [...state.logs, cleanLog] }))
-        } else {
-          set((state) => ({ logs: [...state.logs, log] }))
-        }
-      },
-      resetLogs: () => {
-        set({ logs: [] })
-      },
-      kclErrors: [],
-      addKCLError: (e) => {
-        set((state) => ({ kclErrors: [...state.kclErrors, e] }))
-      },
-      resetKCLErrors: () => {
-        set({ kclErrors: [] })
-      },
-      ast: null,
-      setAst: (ast) => {
-        set({ ast })
-      },
-      updateAst: async (ast, { focusPath, callBack = () => {} } = {}) => {
-        const newCode = recast(ast)
-        const astWithUpdatedSource = parser_wasm(newCode)
-        callBack(astWithUpdatedSource)
-
-        set({ ast: astWithUpdatedSource, code: newCode })
-        if (focusPath) {
-          const { node } = getNodeFromPath<any>(astWithUpdatedSource, focusPath)
-          const { start, end } = node
-          if (!start || !end) return
           setTimeout(() => {
-            get().setCursor({
-              codeBasedSelections: [
-                {
-                  type: 'default',
-                  range: [start, end],
-                },
-              ],
-              otherSelections: [],
+            editorView.dispatch({
+              selection: EditorSelection.create(
+                ranges,
+                selections.codeBasedSelections.length - 1
+              ),
             })
           })
-        }
-      },
-      updateAstAsync: async (ast, focusPath) => {
-        // clear any pending updates
-        pendingAstUpdates.forEach((id) => clearTimeout(id))
-        pendingAstUpdates = []
-        // setup a new update
-        pendingAstUpdates.push(
-          setTimeout(() => {
-            get().updateAst(ast, { focusPath })
-          }, 100) as unknown as number
-        )
-      },
-      code: '',
-      setCode: (code) => {
-        set({ code })
-      },
-      formatCode: async () => {
-        const code = get().code
-        const ast = parser_wasm(code)
-        const newCode = recast(ast)
-        set({ code: newCode, ast })
-      },
-      errorState: {
-        isError: false,
-        error: '',
-      },
-      setError: (error = '') => {
-        set({ errorState: { isError: !!error, error } })
-      },
-      programMemory: { root: {}, pendingMemory: {} },
-      setProgramMemory: (programMemory) => set({ programMemory }),
-      isShiftDown: false,
-      setIsShiftDown: (isShiftDown) => set({ isShiftDown }),
-      artifactMap: {},
-      sourceRangeMap: {},
-      setArtifactNSourceRangeMaps: (maps) => set({ ...maps }),
-      setEngineCommandManager: (engineCommandManager) =>
-        set({ engineCommandManager }),
-      setMediaStream: (mediaStream) => set({ mediaStream }),
-      isStreamReady: false,
-      setIsStreamReady: (isStreamReady) => set({ isStreamReady }),
-      isLSPServerReady: false,
-      setIsLSPServerReady: (isLSPServerReady) => set({ isLSPServerReady }),
-      isMouseDownInStream: false,
-      setIsMouseDownInStream: (isMouseDownInStream) => {
-        set({ isMouseDownInStream })
-      },
-      didDragInStream: false,
-      setDidDragInStream: (didDragInStream) => {
-        set({ didDragInStream })
-      },
-      // For stream event handling
-      fileId: '',
-      setFileId: (fileId) => set({ fileId }),
-      streamDimensions: { streamWidth: 1280, streamHeight: 720 },
-      setStreamDimensions: (streamDimensions) => set({ streamDimensions }),
+        },
+        setCursor2: (codeSelections) => {
+          const currestSelections = get().selectionRanges
+          const code = get().code
+          if (!codeSelections) {
+            get().setCursor({
+              otherSelections: currestSelections.otherSelections,
+              codeBasedSelections: [
+                { range: [0, code.length - 1], type: 'default' },
+              ],
+            })
+            return
+          }
+          const selections: Selections = {
+            ...currestSelections,
+            codeBasedSelections: get().isShiftDown
+              ? [...currestSelections.codeBasedSelections, codeSelections]
+              : [codeSelections],
+          }
+          get().setCursor(selections)
+        },
+        selectionRangeTypeMap: {},
+        selectionRanges: {
+          otherSelections: [],
+          codeBasedSelections: [],
+        },
+        setSelectionRanges: (selectionRanges) =>
+          set({ selectionRanges, selectionRangeTypeMap: {} }),
+        guiMode: { mode: 'default' },
+        lastGuiMode: { mode: 'default' },
+        setGuiMode: (guiMode) => {
+          set({ guiMode })
+        },
+        logs: [],
+        addLog: (log) => {
+          if (Array.isArray(log)) {
+            const cleanLog: any = log.map(({ __geoMeta, ...rest }) => rest)
+            set((state) => ({ logs: [...state.logs, cleanLog] }))
+          } else {
+            set((state) => ({ logs: [...state.logs, log] }))
+          }
+        },
+        resetLogs: () => {
+          set({ logs: [] })
+        },
+        kclErrors: [],
+        addKCLError: (e) => {
+          set((state) => ({ kclErrors: [...state.kclErrors, e] }))
+        },
+        resetKCLErrors: () => {
+          set({ kclErrors: [] })
+        },
+        ast: null,
+        setAst: (ast) => {
+          set({ ast })
+        },
+        updateAst: async (ast, { focusPath, callBack = () => {} } = {}) => {
+          const newCode = recast(ast)
+          const astWithUpdatedSource = parser_wasm(newCode)
+          callBack(astWithUpdatedSource)
 
-      // tauri specific app settings
-      defaultDir: {
-        dir: '',
-      },
-      isBannerDismissed: false,
-      setBannerDismissed: (isBannerDismissed) => set({ isBannerDismissed }),
-      openPanes: ['code'],
-      setOpenPanes: (openPanes) => set({ openPanes }),
-      showHomeMenu: true,
-      setHomeShowMenu: (showHomeMenu) => set({ showHomeMenu }),
-      homeMenuItems: [],
-      setHomeMenuItems: (homeMenuItems) => set({ homeMenuItems }),
-    }),
+          set({ ast: astWithUpdatedSource, code: newCode })
+          if (focusPath) {
+            const { node } = getNodeFromPath<any>(
+              astWithUpdatedSource,
+              focusPath
+            )
+            const { start, end } = node
+            if (!start || !end) return
+            setTimeout(() => {
+              get().setCursor({
+                codeBasedSelections: [
+                  {
+                    type: 'default',
+                    range: [start, end],
+                  },
+                ],
+                otherSelections: [],
+              })
+            })
+          }
+        },
+        updateAstAsync: async (ast, focusPath) => {
+          // clear any pending updates
+          pendingAstUpdates.forEach((id) => clearTimeout(id))
+          pendingAstUpdates = []
+          // setup a new update
+          pendingAstUpdates.push(
+            setTimeout(() => {
+              get().updateAst(ast, { focusPath })
+            }, 100) as unknown as number
+          )
+        },
+        code: '',
+        defferedCode: '',
+        setCode: (code) => set({ code, defferedCode: code }),
+        defferedSetCode: (code) => {
+          set({ code })
+          setDefferedCode(code)
+        },
+        formatCode: async () => {
+          const code = get().code
+          const ast = parser_wasm(code)
+          const newCode = recast(ast)
+          set({ code: newCode, ast })
+        },
+        errorState: {
+          isError: false,
+          error: '',
+        },
+        setError: (error = '') => {
+          set({ errorState: { isError: !!error, error } })
+        },
+        programMemory: { root: {}, pendingMemory: {} },
+        setProgramMemory: (programMemory) => set({ programMemory }),
+        isShiftDown: false,
+        setIsShiftDown: (isShiftDown) => set({ isShiftDown }),
+        artifactMap: {},
+        sourceRangeMap: {},
+        setArtifactNSourceRangeMaps: (maps) => set({ ...maps }),
+        setEngineCommandManager: (engineCommandManager) =>
+          set({ engineCommandManager }),
+        setMediaStream: (mediaStream) => set({ mediaStream }),
+        isStreamReady: false,
+        setIsStreamReady: (isStreamReady) => set({ isStreamReady }),
+        isLSPServerReady: false,
+        setIsLSPServerReady: (isLSPServerReady) => set({ isLSPServerReady }),
+        buttonDownInStream: 0,
+        setButtonDownInStream: (buttonDownInStream) => {
+          set({ buttonDownInStream })
+        },
+        didDragInStream: false,
+        setDidDragInStream: (didDragInStream) => {
+          set({ didDragInStream })
+        },
+        // For stream event handling
+        fileId: '',
+        setFileId: (fileId) => set({ fileId }),
+        streamDimensions: { streamWidth: 1280, streamHeight: 720 },
+        setStreamDimensions: (streamDimensions) => set({ streamDimensions }),
+        isExecuting: false,
+        setIsExecuting: (isExecuting) => set({ isExecuting }),
+
+        // tauri specific app settings
+        defaultDir: {
+          dir: '',
+        },
+        isBannerDismissed: false,
+        setBannerDismissed: (isBannerDismissed) => set({ isBannerDismissed }),
+        openPanes: ['code'],
+        setOpenPanes: (openPanes) => set({ openPanes }),
+        showHomeMenu: true,
+        setHomeShowMenu: (showHomeMenu) => set({ showHomeMenu }),
+        homeMenuItems: [],
+        setHomeMenuItems: (homeMenuItems) => set({ homeMenuItems }),
+      }
+    },
     {
       name: 'store',
       partialize: (state) =>
         Object.fromEntries(
           Object.entries(state).filter(([key]) =>
-            ['code', 'openPanes'].includes(key)
+            ['code', 'defferedCode', 'openPanes'].includes(key)
           )
         ),
     }

src/wasm-lib/Cargo.lock

@@ -1094,7 +1094,7 @@ dependencies = [
 
 [[package]]
 name = "kcl-lib"
-version = "0.1.20"
+version = "0.1.26"
 dependencies = [
  "anyhow",
  "bson",
@@ -1126,9 +1126,9 @@ dependencies = [
 
 [[package]]
 name = "kittycad"
-version = "0.2.23"
+version = "0.2.25"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b8b33e5df8f82b97e5f5af94ff1400ae37449d0f5f1bb79acedf17cf2193680f"
+checksum = "d9cf962b1e81a0b4eb923a727e761b40672cbacc7f5f0b75e13579d346352bc7"
 dependencies = [
  "anyhow",
  "base64 0.21.2",

src/wasm-lib/Cargo.toml

@@ -11,7 +11,7 @@ crate-type = ["cdylib"]
 bson = { version = "2.7.0", features = ["uuid-1", "chrono"] }
 gloo-utils = "0.2.0"
 kcl-lib = { path = "kcl" }
-kittycad = { version = "0.2.23", default-features = false, features = ["js"] }
+kittycad = { version = "0.2.25", default-features = false, features = ["js"] }
 serde_json = "1.0.93"
 wasm-bindgen = "0.2.87"
 wasm-bindgen-futures = "0.4.37"

src/wasm-lib/kcl/Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "kcl-lib"
 description = "KittyCAD Language"
-version = "0.1.20"
+version = "0.1.26"
 edition = "2021"
 license = "MIT"
 
@@ -11,9 +11,9 @@ license = "MIT"
 anyhow = { version = "1.0.75", features = ["backtrace"] }
 clap = { version = "4.4.2", features = ["cargo", "derive", "env", "unicode"] }
 dashmap = "5.5.3"
-derive-docs = { version = "0.1.1" }
+derive-docs = { version = "0.1.3" }
 #derive-docs = { path = "../derive-docs" }
-kittycad = { version = "0.2.23", default-features = false, features = ["js"] }
+kittycad = { version = "0.2.25", default-features = false, features = ["js"] }
 lazy_static = "1.4.0"
 parse-display = "0.8.2"
 regex = "1.7.1"

src/wasm-lib/kcl/fuzz/.gitignore

@@ -0,0 +1,4 @@
+target
+corpus
+artifacts
+coverage

src/wasm-lib/kcl/fuzz/Cargo.toml

@@ -0,0 +1,27 @@
+[package]
+name = "kcl-lib-fuzz"
+version = "0.0.0"
+publish = false
+edition = "2021"
+
+[package.metadata]
+cargo-fuzz = true
+
+[dependencies]
+libfuzzer-sys = "0.4"
+
+[dependencies.kcl-lib]
+path = ".."
+
+# Prevent this from interfering with workspaces
+[workspace]
+members = ["."]
+
+[profile.release]
+debug = 1
+
+[[bin]]
+name = "parser"
+path = "fuzz_targets/parser.rs"
+test = false
+doc = false

src/wasm-lib/kcl/fuzz/fuzz_targets/parser.rs

@@ -0,0 +1,14 @@
+#![no_main]
+#[macro_use]
+extern crate libfuzzer_sys;
+extern crate kcl_lib;
+
+fuzz_target!(|data: &[u8]| {
+    if let Ok(s) = std::str::from_utf8(data) {
+        let tokens = kcl_lib::tokeniser::lexer(s);
+        let parser = kcl_lib::parser::Parser::new(tokens);
+        if let Ok(_) = parser.ast() {
+            println!("OK");
+        }
+    }
+});

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

@@ -27,12 +27,16 @@ pub struct Program {
 }
 
 impl Program {
-    pub fn recast(&self, indentation: &str, is_with_block: bool) -> String {
-        self.body
+    pub fn recast(&self, options: &FormatOptions, indentation_level: usize) -> String {
+        let indentation = options.get_indentation(indentation_level);
+        let result = self
+            .body
             .iter()
             .map(|statement| match statement.clone() {
                 BodyItem::ExpressionStatement(expression_statement) => {
-                    expression_statement.expression.recast(indentation, false)
+                    expression_statement
+                        .expression
+                        .recast(options, indentation_level, false)
                 }
                 BodyItem::VariableDeclaration(variable_declaration) => variable_declaration
                     .declarations
@@ -43,56 +47,44 @@ impl Program {
                             indentation,
                             variable_declaration.kind,
                             declaration.id.name,
-                            declaration.init.recast("", false)
+                            declaration.init.recast(options, 0, false)
                         )
                     })
                     .collect::<String>(),
                 BodyItem::ReturnStatement(return_statement) => {
-                    format!("{}return {}", indentation, return_statement.argument.recast("", false))
+                    format!(
+                        "{}return {}",
+                        indentation,
+                        return_statement.argument.recast(options, 0, false)
+                    )
                 }
             })
             .enumerate()
             .map(|(index, recast_str)| {
-                let is_legit_custom_whitespace_or_comment = |s: String| s != " " && s != "\n" && s != "  " && s != "\t";
-
-                // determine the value of startString
-                let last_white_space_or_comment = if index > 0 {
-                    let tmp = if let Some(non_code_node) = self.non_code_meta.none_code_nodes.get(&(index - 1)) {
-                        non_code_node.format(indentation)
-                    } else {
-                        " ".to_string()
-                    };
-                    tmp
-                } else {
-                    " ".to_string()
-                };
-                // indentation of this line will be covered by the previous if we're using a custom whitespace or comment
-                let mut start_string = if is_legit_custom_whitespace_or_comment(last_white_space_or_comment) {
-                    String::new()
-                } else {
-                    indentation.to_owned()
-                };
-                if index == 0 {
+                let start_string = if index == 0 {
+                    // We need to indent.
                     if let Some(start) = self.non_code_meta.start.clone() {
-                        start_string = start.format(indentation);
+                        start.format(&indentation)
                     } else {
-                        start_string = indentation.to_owned();
+                        indentation.to_string()
                     }
-                }
+                } else {
+                    // Do nothing, we already applied the indentation elsewhere.
+                    String::new()
+                };
 
-                // determine the value of endString
-                let maybe_line_break: String = if index == self.body.len() - 1 && !is_with_block {
+                // determine the value of the end string
+                // basically if we are inside a nested function we want to end with a new line
+                let maybe_line_break: String = if index == self.body.len() - 1 && indentation_level == 0 {
                     String::new()
                 } else {
                     "\n".to_string()
                 };
-                let mut custom_white_space_or_comment = match self.non_code_meta.none_code_nodes.get(&index) {
-                    Some(custom_white_space_or_comment) => custom_white_space_or_comment.format(indentation),
+
+                let custom_white_space_or_comment = match self.non_code_meta.none_code_nodes.get(&index) {
+                    Some(custom_white_space_or_comment) => custom_white_space_or_comment.format(&indentation),
                     None => String::new(),
                 };
-                if !is_legit_custom_whitespace_or_comment(custom_white_space_or_comment.clone()) {
-                    custom_white_space_or_comment = String::new();
-                }
                 let end_string = if custom_white_space_or_comment.is_empty() {
                     maybe_line_break
                 } else {
@@ -103,7 +95,14 @@ impl Program {
             })
             .collect::<String>()
             .trim()
-            .to_string()
+            .to_string();
+
+        // Insert a final new line if the user wants it.
+        if options.insert_final_newline {
+            format!("{}\n", result)
+        } else {
+            result
+        }
     }
 
     /// Returns the body item that includes the given character position.
@@ -118,6 +117,18 @@ impl Program {
         None
     }
 
+    /// Returns the body item that includes the given character position.
+    pub fn get_mut_body_item_for_position(&mut self, pos: usize) -> Option<&mut BodyItem> {
+        for item in &mut self.body {
+            let source_range: SourceRange = item.clone().into();
+            if source_range.contains(pos) {
+                return Some(item);
+            }
+        }
+
+        None
+    }
+
     /// Returns a value that includes the given character position.
     /// This is a bit more recursive than `get_body_item_for_position`.
     pub fn get_value_for_position(&self, pos: usize) -> Option<&Value> {
@@ -150,6 +161,82 @@ impl Program {
 
         symbols
     }
+
+    /// Rename the variable declaration at the given position.
+    pub fn rename_symbol(&mut self, new_name: &str, pos: usize) {
+        // The position must be within the variable declaration.
+        let mut old_name = None;
+        for item in &mut self.body {
+            match item {
+                BodyItem::ExpressionStatement(_expression_statement) => {
+                    continue;
+                }
+                BodyItem::VariableDeclaration(ref mut variable_declaration) => {
+                    if let Some(var_old_name) = variable_declaration.rename_symbol(new_name, pos) {
+                        old_name = Some(var_old_name);
+                        break;
+                    }
+                }
+                BodyItem::ReturnStatement(_return_statement) => continue,
+            }
+        }
+
+        if let Some(old_name) = old_name {
+            // Now rename all the identifiers in the rest of the program.
+            self.rename_identifiers(&old_name, new_name);
+        } else {
+            // Okay so this was not a top level variable declaration.
+            // But it might be a variable declaration inside a function or function params.
+            // So we need to check that.
+            let Some(ref mut item) = self.get_mut_body_item_for_position(pos) else {
+                return;
+            };
+
+            // Recurse over the item.
+            let mut value = match item {
+                BodyItem::ExpressionStatement(ref mut expression_statement) => {
+                    Some(&mut expression_statement.expression)
+                }
+                BodyItem::VariableDeclaration(ref mut variable_declaration) => {
+                    variable_declaration.get_mut_value_for_position(pos)
+                }
+                BodyItem::ReturnStatement(ref mut return_statement) => Some(&mut return_statement.argument),
+            };
+
+            // Check if we have a function expression.
+            if let Some(Value::FunctionExpression(ref mut function_expression)) = &mut value {
+                // Check if the params to the function expression contain the position.
+                for param in &mut function_expression.params {
+                    let param_source_range: SourceRange = param.clone().into();
+                    if param_source_range.contains(pos) {
+                        let old_name = param.name.clone();
+                        // Rename the param.
+                        param.rename(&old_name, new_name);
+                        // Now rename all the identifiers in the rest of the program.
+                        function_expression.body.rename_identifiers(&old_name, new_name);
+                        return;
+                    }
+                }
+            }
+        }
+    }
+
+    /// Rename all identifiers that have the old name to the new given name.
+    fn rename_identifiers(&mut self, old_name: &str, new_name: &str) {
+        for item in &mut self.body {
+            match item {
+                BodyItem::ExpressionStatement(ref mut expression_statement) => {
+                    expression_statement.expression.rename_identifiers(old_name, new_name);
+                }
+                BodyItem::VariableDeclaration(ref mut variable_declaration) => {
+                    variable_declaration.rename_identifiers(old_name, new_name);
+                }
+                BodyItem::ReturnStatement(ref mut return_statement) => {
+                    return_statement.argument.rename_identifiers(old_name, new_name);
+                }
+            }
+        }
+    }
 }
 
 pub trait ValueMeta {
@@ -249,19 +336,18 @@ pub enum Value {
 }
 
 impl Value {
-    fn recast(&self, indentation: &str, is_in_pipe_expression: bool) -> String {
-        let indentation = indentation.to_string() + if is_in_pipe_expression { "  " } else { "" };
+    fn recast(&self, options: &FormatOptions, indentation_level: usize, is_in_pipe: bool) -> String {
         match &self {
-            Value::BinaryExpression(bin_exp) => bin_exp.recast(),
-            Value::ArrayExpression(array_exp) => array_exp.recast(&indentation, is_in_pipe_expression),
-            Value::ObjectExpression(ref obj_exp) => obj_exp.recast(&indentation, is_in_pipe_expression),
+            Value::BinaryExpression(bin_exp) => bin_exp.recast(options),
+            Value::ArrayExpression(array_exp) => array_exp.recast(options, indentation_level, is_in_pipe),
+            Value::ObjectExpression(ref obj_exp) => obj_exp.recast(options, indentation_level, is_in_pipe),
             Value::MemberExpression(mem_exp) => mem_exp.recast(),
             Value::Literal(literal) => literal.recast(),
-            Value::FunctionExpression(func_exp) => func_exp.recast(&indentation),
-            Value::CallExpression(call_exp) => call_exp.recast(&indentation, is_in_pipe_expression),
+            Value::FunctionExpression(func_exp) => func_exp.recast(options, indentation_level),
+            Value::CallExpression(call_exp) => call_exp.recast(options, indentation_level, is_in_pipe),
             Value::Identifier(ident) => ident.name.to_string(),
-            Value::PipeExpression(pipe_exp) => pipe_exp.recast(&indentation),
-            Value::UnaryExpression(unary_exp) => unary_exp.recast(),
+            Value::PipeExpression(pipe_exp) => pipe_exp.recast(options, indentation_level),
+            Value::UnaryExpression(unary_exp) => unary_exp.recast(options),
             Value::PipeSubstitution(_) => crate::parser::PIPE_SUBSTITUTION_OPERATOR.to_string(),
         }
     }
@@ -317,6 +403,29 @@ impl Value {
             Value::UnaryExpression(unary_expression) => unary_expression.get_hover_value_for_position(pos, code),
         }
     }
+
+    /// Rename all identifiers that have the old name to the new given name.
+    fn rename_identifiers(&mut self, old_name: &str, new_name: &str) {
+        match self {
+            Value::Literal(_literal) => {}
+            Value::Identifier(ref mut identifier) => identifier.rename(old_name, new_name),
+            Value::BinaryExpression(ref mut binary_expression) => {
+                binary_expression.rename_identifiers(old_name, new_name)
+            }
+            Value::FunctionExpression(_function_identifier) => {}
+            Value::CallExpression(ref mut call_expression) => call_expression.rename_identifiers(old_name, new_name),
+            Value::PipeExpression(ref mut pipe_expression) => pipe_expression.rename_identifiers(old_name, new_name),
+            Value::PipeSubstitution(_) => {}
+            Value::ArrayExpression(ref mut array_expression) => array_expression.rename_identifiers(old_name, new_name),
+            Value::ObjectExpression(ref mut object_expression) => {
+                object_expression.rename_identifiers(old_name, new_name)
+            }
+            Value::MemberExpression(ref mut member_expression) => {
+                member_expression.rename_identifiers(old_name, new_name)
+            }
+            Value::UnaryExpression(ref mut unary_expression) => unary_expression.rename_identifiers(old_name, new_name),
+        }
+    }
 }
 
 impl From<Value> for crate::executor::SourceRange {
@@ -355,13 +464,13 @@ impl From<&BinaryPart> for crate::executor::SourceRange {
 }
 
 impl BinaryPart {
-    fn recast(&self, indentation: &str) -> String {
+    fn recast(&self, options: &FormatOptions, indentation_level: usize) -> String {
         match &self {
             BinaryPart::Literal(literal) => literal.recast(),
             BinaryPart::Identifier(identifier) => identifier.name.to_string(),
-            BinaryPart::BinaryExpression(binary_expression) => binary_expression.recast(),
-            BinaryPart::CallExpression(call_expression) => call_expression.recast(indentation, false),
-            BinaryPart::UnaryExpression(unary_expression) => unary_expression.recast(),
+            BinaryPart::BinaryExpression(binary_expression) => binary_expression.recast(options),
+            BinaryPart::CallExpression(call_expression) => call_expression.recast(options, indentation_level, false),
+            BinaryPart::UnaryExpression(unary_expression) => unary_expression.recast(options),
         }
     }
 
@@ -422,6 +531,23 @@ impl BinaryPart {
             BinaryPart::UnaryExpression(unary_expression) => unary_expression.get_hover_value_for_position(pos, code),
         }
     }
+
+    /// Rename all identifiers that have the old name to the new given name.
+    fn rename_identifiers(&mut self, old_name: &str, new_name: &str) {
+        match self {
+            BinaryPart::Literal(_literal) => {}
+            BinaryPart::Identifier(ref mut identifier) => identifier.rename(old_name, new_name),
+            BinaryPart::BinaryExpression(ref mut binary_expression) => {
+                binary_expression.rename_identifiers(old_name, new_name)
+            }
+            BinaryPart::CallExpression(ref mut call_expression) => {
+                call_expression.rename_identifiers(old_name, new_name)
+            }
+            BinaryPart::UnaryExpression(ref mut unary_expression) => {
+                unary_expression.rename_identifiers(old_name, new_name)
+            }
+        }
+    }
 }
 
 #[derive(Debug, Clone, Deserialize, Serialize, PartialEq, ts_rs::TS, JsonSchema)]
@@ -436,17 +562,17 @@ pub struct NoneCodeNode {
 impl NoneCodeNode {
     pub fn value(&self) -> String {
         match &self.value {
-            NoneCodeValue::Inline { value } => value.clone(),
-            NoneCodeValue::Block { value } => value.clone(),
-            NoneCodeValue::NewLineBlock { value } => value.clone(),
+            NoneCodeValue::InlineComment { value } => value.clone(),
+            NoneCodeValue::BlockComment { value } => value.clone(),
+            NoneCodeValue::NewLineBlockComment { value } => value.clone(),
             NoneCodeValue::NewLine => "\n\n".to_string(),
         }
     }
 
     pub fn format(&self, indentation: &str) -> String {
         match &self.value {
-            NoneCodeValue::Inline { value } => format!(" // {}\n", value),
-            NoneCodeValue::Block { value } => {
+            NoneCodeValue::InlineComment { value } => format!(" // {}\n", value),
+            NoneCodeValue::BlockComment { value } => {
                 let add_start_new_line = if self.start == 0 { "" } else { "\n" };
                 if value.contains('\n') {
                     format!("{}{}/* {} */\n", add_start_new_line, indentation, value)
@@ -454,7 +580,7 @@ impl NoneCodeNode {
                     format!("{}{}// {}\n", add_start_new_line, indentation, value)
                 }
             }
-            NoneCodeValue::NewLineBlock { value } => {
+            NoneCodeValue::NewLineBlockComment { value } => {
                 let add_start_new_line = if self.start == 0 { "" } else { "\n\n" };
                 if value.contains('\n') {
                     format!("{}{}/* {} */\n", add_start_new_line, indentation, value)
@@ -471,9 +597,29 @@ impl NoneCodeNode {
 #[ts(export)]
 #[serde(tag = "type", rename_all = "camelCase")]
 pub enum NoneCodeValue {
-    Inline { value: String },
-    Block { value: String },
-    NewLineBlock { value: String },
+    /// An inline comment.
+    /// An example of this is the following: `1 + 1 // This is an inline comment`.
+    InlineComment {
+        value: String,
+    },
+    /// A block comment.
+    /// An example of this is the following:
+    /// ```python,no_run
+    /// /* This is a
+    ///     block comment */
+    /// 1 + 1
+    /// ```
+    /// Now this is important. The block comment is attached to the next line.
+    /// This is always the case. Also the block comment doesnt have a new line above it.
+    /// If it did it would be a `NewLineBlockComment`.
+    BlockComment {
+        value: String,
+    },
+    /// A block comment that has a new line above it.
+    /// The user explicitly added a new line above the block comment.
+    NewLineBlockComment {
+        value: String,
+    },
     // A new line like `\n\n` NOT a new line like `\n`.
     // This is also not a comment.
     NewLine,
@@ -539,13 +685,13 @@ pub struct CallExpression {
 impl_value_meta!(CallExpression);
 
 impl CallExpression {
-    fn recast(&self, indentation: &str, is_in_pipe_expression: bool) -> String {
+    fn recast(&self, options: &FormatOptions, indentation_level: usize, is_in_pipe: bool) -> String {
         format!(
             "{}({})",
             self.callee.name,
             self.arguments
                 .iter()
-                .map(|arg| arg.recast(indentation, is_in_pipe_expression))
+                .map(|arg| arg.recast(options, indentation_level, is_in_pipe))
                 .collect::<Vec<String>>()
                 .join(", ")
         )
@@ -671,6 +817,15 @@ impl CallExpression {
 
         None
     }
+
+    /// Rename all identifiers that have the old name to the new given name.
+    fn rename_identifiers(&mut self, old_name: &str, new_name: &str) {
+        self.callee.rename(old_name, new_name);
+
+        for arg in &mut self.arguments {
+            arg.rename_identifiers(old_name, new_name);
+        }
+    }
 }
 
 /// A function declaration.
@@ -723,6 +878,50 @@ impl VariableDeclaration {
         None
     }
 
+    /// Returns a value that includes the given character position.
+    pub fn get_mut_value_for_position(&mut self, pos: usize) -> Option<&mut Value> {
+        for declaration in &mut self.declarations {
+            let source_range: SourceRange = declaration.clone().into();
+            if source_range.contains(pos) {
+                return Some(&mut declaration.init);
+            }
+        }
+
+        None
+    }
+
+    /// Rename the variable declaration at the given position.
+    /// This returns the old name of the variable, if it found one.
+    pub fn rename_symbol(&mut self, new_name: &str, pos: usize) -> Option<String> {
+        // The position must be within the variable declaration.
+        let source_range: SourceRange = self.clone().into();
+        if !source_range.contains(pos) {
+            return None;
+        }
+
+        for declaration in &mut self.declarations {
+            let declaration_source_range: SourceRange = declaration.id.clone().into();
+            if declaration_source_range.contains(pos) {
+                let old_name = declaration.id.name.clone();
+                declaration.id.name = new_name.to_string();
+                return Some(old_name);
+            }
+        }
+
+        None
+    }
+
+    pub fn rename_identifiers(&mut self, old_name: &str, new_name: &str) {
+        for declaration in &mut self.declarations {
+            // Skip the init for the variable with the new name since it is the one we are renaming.
+            if declaration.id.name == new_name {
+                continue;
+            }
+
+            declaration.init.rename_identifiers(old_name, new_name);
+        }
+    }
+
     pub fn get_lsp_symbols(&self, code: &str) -> Vec<DocumentSymbol> {
         let mut symbols = vec![];
 
@@ -839,7 +1038,9 @@ impl VariableKind {
 pub struct VariableDeclarator {
     pub start: usize,
     pub end: usize,
+    /// The identifier of the variable.
     pub id: Identifier,
+    /// The value of the variable.
     pub init: Value,
 }
 
@@ -901,6 +1102,15 @@ pub struct Identifier {
 
 impl_value_meta!(Identifier);
 
+impl Identifier {
+    /// Rename all identifiers that have the old name to the new given name.
+    fn rename(&mut self, old_name: &str, new_name: &str) {
+        if self.name == old_name {
+            self.name = new_name.to_string();
+        }
+    }
+}
+
 #[derive(Debug, Clone, Deserialize, Serialize, PartialEq, ts_rs::TS, JsonSchema)]
 #[ts(export)]
 #[serde(tag = "type")]
@@ -923,27 +1133,35 @@ pub struct ArrayExpression {
 impl_value_meta!(ArrayExpression);
 
 impl ArrayExpression {
-    fn recast(&self, indentation: &str, is_in_pipe_expression: bool) -> String {
+    fn recast(&self, options: &FormatOptions, indentation_level: usize, is_in_pipe: bool) -> String {
         let flat_recast = format!(
             "[{}]",
             self.elements
                 .iter()
-                .map(|el| el.recast("", false))
+                .map(|el| el.recast(options, 0, false))
                 .collect::<Vec<String>>()
                 .join(", ")
         );
         let max_array_length = 40;
         if flat_recast.len() > max_array_length {
-            let indentation = indentation.to_string() + "  ";
+            let inner_indentation = if is_in_pipe {
+                options.get_indentation_offset_pipe(indentation_level + 1)
+            } else {
+                options.get_indentation(indentation_level + 1)
+            };
             format!(
                 "[\n{}{}\n{}]",
-                indentation,
+                inner_indentation,
                 self.elements
                     .iter()
-                    .map(|el| el.recast(&indentation, false))
+                    .map(|el| el.recast(options, indentation_level, false))
                     .collect::<Vec<String>>()
-                    .join(format!(",\n{}", indentation).as_str()),
-                if is_in_pipe_expression { "    " } else { "" }
+                    .join(format!(",\n{}", inner_indentation).as_str()),
+                if is_in_pipe {
+                    options.get_indentation_offset_pipe(indentation_level)
+                } else {
+                    options.get_indentation(indentation_level)
+                },
             )
         } else {
             flat_recast
@@ -1019,6 +1237,13 @@ impl ArrayExpression {
             }],
         })
     }
+
+    /// Rename all identifiers that have the old name to the new given name.
+    fn rename_identifiers(&mut self, old_name: &str, new_name: &str) {
+        for element in &mut self.elements {
+            element.rename_identifiers(old_name, new_name);
+        }
+    }
 }
 
 #[derive(Debug, Clone, Deserialize, Serialize, PartialEq, ts_rs::TS, JsonSchema)]
@@ -1031,27 +1256,35 @@ pub struct ObjectExpression {
 }
 
 impl ObjectExpression {
-    fn recast(&self, indentation: &str, is_in_pipe_expression: bool) -> String {
+    fn recast(&self, options: &FormatOptions, indentation_level: usize, is_in_pipe: bool) -> String {
         let flat_recast = format!(
             "{{ {} }}",
             self.properties
                 .iter()
-                .map(|prop| { format!("{}: {}", prop.key.name, prop.value.recast("", false)) })
+                .map(|prop| { format!("{}: {}", prop.key.name, prop.value.recast(options, 0, false)) })
                 .collect::<Vec<String>>()
                 .join(", ")
         );
         let max_array_length = 40;
         if flat_recast.len() > max_array_length {
-            let indentation = indentation.to_owned() + "  ";
+            let inner_indentation = if is_in_pipe {
+                options.get_indentation_offset_pipe(indentation_level + 1)
+            } else {
+                options.get_indentation(indentation_level + 1)
+            };
             format!(
                 "{{\n{}{}\n{}}}",
-                indentation,
+                inner_indentation,
                 self.properties
                     .iter()
-                    .map(|prop| { format!("{}: {}", prop.key.name, prop.value.recast("", is_in_pipe_expression)) })
+                    .map(|prop| { format!("{}: {}", prop.key.name, prop.value.recast(options, 0, false)) })
                     .collect::<Vec<String>>()
-                    .join(format!(",\n{}", indentation).as_str()),
-                if is_in_pipe_expression { "     " } else { "" }
+                    .join(format!(",\n{}", inner_indentation).as_str()),
+                if is_in_pipe {
+                    options.get_indentation_offset_pipe(indentation_level)
+                } else {
+                    options.get_indentation(indentation_level)
+                },
             )
         } else {
             flat_recast
@@ -1125,6 +1358,13 @@ impl ObjectExpression {
             }],
         })
     }
+
+    /// Rename all identifiers that have the old name to the new given name.
+    fn rename_identifiers(&mut self, old_name: &str, new_name: &str) {
+        for property in &mut self.properties {
+            property.value.rename_identifiers(old_name, new_name);
+        }
+    }
 }
 
 impl_value_meta!(ObjectExpression);
@@ -1342,6 +1582,21 @@ impl MemberExpression {
             }))
         }
     }
+
+    /// Rename all identifiers that have the old name to the new given name.
+    fn rename_identifiers(&mut self, old_name: &str, new_name: &str) {
+        match &mut self.object {
+            MemberObject::MemberExpression(ref mut member_expression) => {
+                member_expression.rename_identifiers(old_name, new_name)
+            }
+            MemberObject::Identifier(ref mut identifier) => identifier.rename(old_name, new_name),
+        }
+
+        match &mut self.property {
+            LiteralIdentifier::Identifier(ref mut identifier) => identifier.rename(old_name, new_name),
+            LiteralIdentifier::Literal(_) => {}
+        }
+    }
 }
 
 #[derive(Debug, Clone, Deserialize, Serialize, PartialEq, ts_rs::TS, JsonSchema)]
@@ -1370,7 +1625,7 @@ impl BinaryExpression {
         self.operator.precedence()
     }
 
-    fn recast(&self) -> String {
+    fn recast(&self, options: &FormatOptions) -> String {
         let maybe_wrap_it = |a: String, doit: bool| -> String {
             if doit {
                 format!("({})", a)
@@ -1393,9 +1648,9 @@ impl BinaryExpression {
 
         format!(
             "{} {} {}",
-            maybe_wrap_it(self.left.recast(""), should_wrap_left),
+            maybe_wrap_it(self.left.recast(options, 0), should_wrap_left),
             self.operator,
-            maybe_wrap_it(self.right.recast(""), should_wrap_right)
+            maybe_wrap_it(self.right.recast(options, 0), should_wrap_right)
         )
     }
 
@@ -1458,6 +1713,12 @@ impl BinaryExpression {
             }],
         })
     }
+
+    /// Rename all identifiers that have the old name to the new given name.
+    fn rename_identifiers(&mut self, old_name: &str, new_name: &str) {
+        self.left.rename_identifiers(old_name, new_name);
+        self.right.rename_identifiers(old_name, new_name);
+    }
 }
 
 pub fn parse_json_number_as_f64(j: &serde_json::Value, source_range: SourceRange) -> Result<f64, KclError> {
@@ -1532,8 +1793,8 @@ pub struct UnaryExpression {
 impl_value_meta!(UnaryExpression);
 
 impl UnaryExpression {
-    fn recast(&self) -> String {
-        format!("{}{}", &self.operator, self.argument.recast(""))
+    fn recast(&self, options: &FormatOptions) -> String {
+        format!("{}{}", &self.operator, self.argument.recast(options, 0))
     }
 
     pub fn get_result(
@@ -1565,6 +1826,11 @@ impl UnaryExpression {
 
         None
     }
+
+    /// Rename all identifiers that have the old name to the new given name.
+    fn rename_identifiers(&mut self, old_name: &str, new_name: &str) {
+        self.argument.rename_identifiers(old_name, new_name);
+    }
 }
 
 #[derive(Debug, Clone, Deserialize, Serialize, PartialEq, ts_rs::TS, JsonSchema, FromStr, Display)]
@@ -1595,13 +1861,13 @@ pub struct PipeExpression {
 impl_value_meta!(PipeExpression);
 
 impl PipeExpression {
-    fn recast(&self, indentation: &str) -> String {
+    fn recast(&self, options: &FormatOptions, indentation_level: usize) -> String {
         self.body
             .iter()
             .enumerate()
             .map(|(index, statement)| {
-                let indentation = indentation.to_string() + "  ";
-                let mut s = statement.recast(&indentation, true);
+                let indentation = options.get_indentation(indentation_level + 1);
+                let mut s = statement.recast(options, indentation_level + 1, true);
                 let non_code_meta = self.non_code_meta.clone();
                 if let Some(non_code_meta_value) = non_code_meta.none_code_nodes.get(&index) {
                     s += non_code_meta_value.format(&indentation).trim_end_matches('\n')
@@ -1641,6 +1907,13 @@ impl PipeExpression {
         pipe_info.index = 0;
         execute_pipe_body(memory, &self.body, pipe_info, self.into(), engine)
     }
+
+    /// Rename all identifiers that have the old name to the new given name.
+    fn rename_identifiers(&mut self, old_name: &str, new_name: &str) {
+        for statement in &mut self.body {
+            statement.rename_identifiers(old_name, new_name);
+        }
+    }
 }
 
 fn execute_pipe_body(
@@ -1706,17 +1979,16 @@ pub struct FunctionExpression {
 impl_value_meta!(FunctionExpression);
 
 impl FunctionExpression {
-    pub fn recast(&self, indentation: &str) -> String {
+    pub fn recast(&self, options: &FormatOptions, indentation_level: usize) -> String {
         format!(
-            "({}) => {{\n{}{}{}\n}}",
+            "({}) => {{\n{}{}\n}}",
             self.params
                 .iter()
                 .map(|param| param.name.clone())
                 .collect::<Vec<String>>()
                 .join(", "),
-            indentation,
-            "  ",
-            self.body.recast("  ", true)
+            options.get_indentation(indentation_level + 1),
+            self.body.recast(options, indentation_level + 1)
         )
     }
 
@@ -1756,6 +2028,58 @@ pub enum Hover {
     },
 }
 
+/// Format options.
+#[derive(Debug, Clone, Deserialize, Serialize, PartialEq, ts_rs::TS, JsonSchema)]
+#[ts(export)]
+#[serde(rename_all = "camelCase")]
+pub struct FormatOptions {
+    /// Size of a tab in spaces.
+    pub tab_size: usize,
+    /// Prefer tabs over spaces.
+    pub use_tabs: bool,
+    /// How to handle the final newline in the file.
+    /// If true, ensure file ends with a newline.
+    /// If false, ensure file does not end with a newline.
+    pub insert_final_newline: bool,
+}
+
+impl Default for FormatOptions {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
+impl FormatOptions {
+    /// Define the default format options.
+    /// We use 2 spaces for indentation.
+    pub fn new() -> Self {
+        Self {
+            tab_size: 2,
+            use_tabs: false,
+            insert_final_newline: false,
+        }
+    }
+
+    /// Get the indentation string for the given level.
+    pub fn get_indentation(&self, level: usize) -> String {
+        if self.use_tabs {
+            "\t".repeat(level)
+        } else {
+            " ".repeat(level * self.tab_size)
+        }
+    }
+
+    /// Get the indentation string for the given level.
+    /// But offset the pipe operator (and a space) by one level.
+    pub fn get_indentation_offset_pipe(&self, level: usize) -> String {
+        if self.use_tabs {
+            "\t".repeat(level + 1)
+        } else {
+            " ".repeat(level * self.tab_size) + " ".repeat(PIPE_OPERATOR.len() + 1).as_str()
+        }
+    }
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;
@@ -1797,7 +2121,7 @@ show(part001)"#;
         let some_program: crate::abstract_syntax_tree_types::Program =
             serde_json::from_str(some_program_string).unwrap();
 
-        let recasted = some_program.recast("", false);
+        let recasted = some_program.recast(&Default::default(), 0);
         assert_eq!(
             recasted,
             r#"const part001 = startSketchAt('default')
@@ -1816,7 +2140,7 @@ show(part001)"#
         let parser = crate::parser::Parser::new(tokens);
         let program = parser.ast().unwrap();
 
-        let recasted = program.recast("", false);
+        let recasted = program.recast(&Default::default(), 0);
         assert_eq!(
             recasted,
             r#"const part001 = startSketchAt([0.0, 5.0])
@@ -1834,7 +2158,7 @@ show(part001)"#
         let parser = crate::parser::Parser::new(tokens);
         let program = parser.ast().unwrap();
 
-        let recasted = program.recast("", false);
+        let recasted = program.recast(&Default::default(), 0);
         assert_eq!(
             recasted,
             r#"const part001 = startSketchAt([0.0, 5.0])
@@ -1852,7 +2176,7 @@ show(part001)"#
         let parser = crate::parser::Parser::new(tokens);
         let program = parser.ast().unwrap();
 
-        let recasted = program.recast("", false);
+        let recasted = program.recast(&Default::default(), 0);
         assert_eq!(
             recasted,
             r#"const part001 = startSketchAt([0.0, 5.0])
@@ -1877,7 +2201,7 @@ show(part001)"#
         let parser = crate::parser::Parser::new(tokens);
         let program = parser.ast().unwrap();
 
-        let recasted = program.recast("", false);
+        let recasted = program.recast(&Default::default(), 0);
         assert_eq!(
             recasted,
             r#"const myFn = () => {
@@ -1913,7 +2237,7 @@ const mySk1 = startSketchAt([0, 0])
         let parser = crate::parser::Parser::new(tokens);
         let program = parser.ast().unwrap();
 
-        let recasted = program.recast("", false);
+        let recasted = program.recast(&Default::default(), 0);
         assert_eq!(
             recasted,
             r#"// comment at start
@@ -1940,9 +2264,9 @@ a comment between pipe expression statements */
   |> line({ to: [0.62, 4.15], tag: 'seg01' }, %)
   |> line([2.77, -1.24], %)
   |> angledLineThatIntersects({
-        angle: 201,
-        offset: -1.35,
-        intersectTag: 'seg01'
+       angle: 201,
+       offset: -1.35,
+       intersectTag: 'seg01'
      }, %)
   |> line([-0.42, -1.72], %)
 
@@ -1951,7 +2275,7 @@ show(part001)"#;
         let parser = crate::parser::Parser::new(tokens);
         let program = parser.ast().unwrap();
 
-        let recasted = program.recast("", false);
+        let recasted = program.recast(&Default::default(), 0);
         assert_eq!(recasted, some_program_string);
     }
 
@@ -1964,12 +2288,19 @@ const yo = {
   anum: 2,
   identifier: three,
   binExp: 4 + 5
-}"#;
+}
+const yo = [
+  1,
+  "  2,",
+  "three",
+  4 + 5,
+  "  hey oooooo really long long long"
+]"#;
         let tokens = crate::tokeniser::lexer(some_program_string);
         let parser = crate::parser::Parser::new(tokens);
         let program = parser.ast().unwrap();
 
-        let recasted = program.recast("", false);
+        let recasted = program.recast(&Default::default(), 0);
         assert_eq!(recasted, some_program_string);
     }
 
@@ -1987,7 +2318,7 @@ const things = "things"
         let parser = crate::parser::Parser::new(tokens);
         let program = parser.ast().unwrap();
 
-        let recasted = program.recast("", false);
+        let recasted = program.recast(&Default::default(), 0);
         assert_eq!(recasted, some_program_string.trim());
     }
 
@@ -2005,7 +2336,125 @@ const things = "things"
         let parser = crate::parser::Parser::new(tokens);
         let program = parser.ast().unwrap();
 
-        let recasted = program.recast("", false);
+        let recasted = program.recast(&Default::default(), 0);
         assert_eq!(recasted, some_program_string.trim());
     }
+
+    #[test]
+    fn test_recast_array_new_line_in_pipe() {
+        let some_program_string = r#"const myVar = 3
+const myVar2 = 5
+const myVar3 = 6
+const myAng = 40
+const myAng2 = 134
+const part001 = startSketchAt([0, 0])
+  |> line({ to: [1, 3.82], tag: 'seg01' }, %) // ln-should-get-tag
+  |> angledLineToX([
+       -angleToMatchLengthX('seg01', myVar, %),
+       myVar
+     ], %) // ln-lineTo-xAbsolute should use angleToMatchLengthX helper
+  |> angledLineToY([
+       -angleToMatchLengthY('seg01', myVar, %),
+       myVar
+     ], %) // ln-lineTo-yAbsolute should use angleToMatchLengthY helper"#;
+        let tokens = crate::tokeniser::lexer(some_program_string);
+        let parser = crate::parser::Parser::new(tokens);
+        let program = parser.ast().unwrap();
+
+        let recasted = program.recast(&Default::default(), 0);
+        assert_eq!(recasted, some_program_string);
+    }
+
+    #[test]
+    fn test_recast_array_new_line_in_pipe_custom() {
+        let some_program_string = r#"const myVar = 3
+const myVar2 = 5
+const myVar3 = 6
+const myAng = 40
+const myAng2 = 134
+const part001 = startSketchAt([0, 0])
+   |> line({ to: [1, 3.82], tag: 'seg01' }, %) // ln-should-get-tag
+   |> angledLineToX([
+         -angleToMatchLengthX('seg01', myVar, %),
+         myVar
+      ], %) // ln-lineTo-xAbsolute should use angleToMatchLengthX helper
+   |> angledLineToY([
+         -angleToMatchLengthY('seg01', myVar, %),
+         myVar
+      ], %) // ln-lineTo-yAbsolute should use angleToMatchLengthY helper
+"#;
+        let tokens = crate::tokeniser::lexer(some_program_string);
+        let parser = crate::parser::Parser::new(tokens);
+        let program = parser.ast().unwrap();
+
+        let recasted = program.recast(
+            &FormatOptions {
+                tab_size: 3,
+                use_tabs: false,
+                insert_final_newline: true,
+            },
+            0,
+        );
+        assert_eq!(recasted, some_program_string);
+    }
+
+    #[test]
+    fn test_recast_after_rename_std() {
+        let some_program_string = r#"const part001 = startSketchAt([0.0000000000, 5.0000000000])
+    |> line([0.4900857016, -0.0240763666], %)
+
+const part002 = "part002"
+const things = [part001, 0.0]
+let blah = 1
+const foo = false
+let baz = {a: 1, part001: "thing"}
+
+fn ghi = (part001) => {
+  return part001
+}
+
+show(part001)"#;
+        let tokens = crate::tokeniser::lexer(some_program_string);
+        let parser = crate::parser::Parser::new(tokens);
+        let mut program = parser.ast().unwrap();
+        program.rename_symbol("mySuperCoolPart", 6);
+
+        let recasted = program.recast(&Default::default(), 0);
+        assert_eq!(
+            recasted,
+            r#"const mySuperCoolPart = startSketchAt([0.0, 5.0])
+  |> line([0.4900857016, -0.0240763666], %)
+
+const part002 = "part002"
+const things = [mySuperCoolPart, 0.0]
+let blah = 1
+const foo = false
+let baz = { a: 1, part001: "thing" }
+
+fn ghi = (part001) => {
+  return part001
+}
+
+show(mySuperCoolPart)"#
+        );
+    }
+
+    #[test]
+    fn test_recast_after_rename_fn_args() {
+        let some_program_string = r#"fn ghi = (x, y, z) => {
+  return x
+}"#;
+        let tokens = crate::tokeniser::lexer(some_program_string);
+        let parser = crate::parser::Parser::new(tokens);
+        let mut program = parser.ast().unwrap();
+        program.rename_symbol("newName", 10);
+
+        let recasted = program.recast(&Default::default(), 0);
+        assert_eq!(
+            recasted,
+            r#"fn ghi = (newName, y, z) => {
+  return newName
+}"#
+        );
+    }
 }

src/wasm-lib/kcl/src/engine/conn.rs

@@ -87,6 +87,9 @@ impl EngineConnection {
 
                         if let Some(msg) = ws_resp.resp {
                             match msg {
+                                OkWebSocketResponseData::MetricsRequest {} => {
+                                    // @paultag todo
+                                }
                                 OkWebSocketResponseData::IceServerInfo { ice_servers } => {
                                     println!("got ice server info: {:?}", ice_servers);
                                 }

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

@@ -642,7 +642,7 @@ pub fn execute(
                                         for (index, param) in function_expression.params.iter().enumerate() {
                                             fn_memory.add(
                                                 &param.name,
-                                                args.clone().get(index).unwrap().clone(),
+                                                args.get(index).unwrap().clone(),
                                                 param.into(),
                                             )?;
                                         }

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

@@ -228,8 +228,8 @@ impl ReversePolishNotation {
                     .collect::<Vec<Token>>(),
             );
             return rpn.parse();
-        } else if current_token.value == ")" {
-            if !self.operators.is_empty() && self.operators[self.operators.len() - 1].value != "(" {
+        } else if current_token.value == ")" && !self.operators.is_empty() {
+            if self.operators[self.operators.len() - 1].value != "(" {
                 // pop operators off the stack and push them to postFix until we find the matching '('
                 let rpn = ReversePolishNotation::new(
                     &self.parser.tokens,

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

@@ -336,17 +336,26 @@ impl Parser {
             value: if start_end_string.starts_with("\n\n") && is_new_line_comment {
                 // Preserve if they want a whitespace line before the comment.
                 // But let's just allow one.
-                NoneCodeValue::NewLineBlock { value: full_string }
+                NoneCodeValue::NewLineBlockComment { value: full_string }
             } else if is_new_line_comment {
-                NoneCodeValue::Block { value: full_string }
+                NoneCodeValue::BlockComment { value: full_string }
             } else {
-                NoneCodeValue::Inline { value: full_string }
+                NoneCodeValue::InlineComment { value: full_string }
             },
         };
         Ok((Some(node), end_index - 1))
     }
 
     fn next_meaningful_token(&self, index: usize, offset: Option<usize>) -> Result<TokenReturnWithNonCode, KclError> {
+        // There is no next meaningful token.
+        if index >= self.tokens.len() - 1 {
+            return Ok(TokenReturnWithNonCode {
+                token: None,
+                index: self.tokens.len() - 1,
+                non_code_node: None,
+            });
+        }
+
         let new_index = index + offset.unwrap_or(1);
         let Ok(token) = self.get_token(new_index) else {
             return Ok(TokenReturnWithNonCode {
@@ -405,7 +414,7 @@ impl Parser {
         if found_another_opening_brace {
             return self.find_closing_brace(index + 1, brace_count + 1, search_opening_brace);
         }
-        if found_another_closing_brace {
+        if found_another_closing_brace && brace_count > 0 {
             return self.find_closing_brace(index + 1, brace_count - 1, search_opening_brace);
         }
         // non-brace token, increment and continue
@@ -610,6 +619,12 @@ impl Parser {
     fn make_member_expression(&self, index: usize) -> Result<MemberExpressionReturn, KclError> {
         let current_token = self.get_token(index)?;
         let mut keys_info = self.collect_object_keys(index, None)?;
+        if keys_info.is_empty() {
+            return Err(KclError::Syntax(KclErrorDetails {
+                source_ranges: vec![current_token.into()],
+                message: "expected to be started on a identifier or literal".to_string(),
+            }));
+        }
         let last_key = keys_info[keys_info.len() - 1].clone();
         let first_key = keys_info.remove(0);
         let root = self.make_identifier(index)?;
@@ -679,7 +694,11 @@ impl Parser {
                 return Ok(index);
             }
             let next_right = self.next_meaningful_token(maybe_operator.index, None)?;
-            self.find_end_of_binary_expression(next_right.index)
+            if next_right.index != index {
+                self.find_end_of_binary_expression(next_right.index)
+            } else {
+                Ok(index)
+            }
         } else {
             Ok(index)
         }
@@ -847,6 +866,8 @@ impl Parser {
     fn make_array_expression(&self, index: usize) -> Result<ArrayReturn, KclError> {
         let opening_brace_token = self.get_token(index)?;
         let first_element_token = self.next_meaningful_token(index, None)?;
+        // Make sure there is a closing brace.
+        let _closing_brace = self.find_closing_brace(index, 0, "")?;
         let array_elements = self.make_array_elements(first_element_token.index, Vec::new())?;
         Ok(ArrayReturn {
             expression: ArrayExpression {
@@ -1018,7 +1039,7 @@ impl Parser {
                     } else {
                         return Err(KclError::Unimplemented(KclErrorDetails {
                             source_ranges: vec![argument_token_token.clone().into()],
-                            message: format!("Unexpected token {} ", argument_token_token.value),
+                            message: format!("Unexpected token {}", argument_token_token.value),
                         }));
                     };
                 }
@@ -1043,18 +1064,18 @@ impl Parser {
 
                 Err(KclError::Unimplemented(KclErrorDetails {
                     source_ranges: vec![argument_token_token.clone().into()],
-                    message: format!("Unexpected token {} ", argument_token_token.value),
+                    message: format!("Unexpected token {}", argument_token_token.value),
                 }))
             } else {
                 Err(KclError::Unimplemented(KclErrorDetails {
                     source_ranges: vec![brace_or_comma_token.into()],
-                    message: format!("Unexpected token {} ", brace_or_comma_token.value),
+                    message: format!("Unexpected token {}", brace_or_comma_token.value),
                 }))
             }
         } else {
             Err(KclError::Unimplemented(KclErrorDetails {
                 source_ranges: vec![brace_or_comma_token.into()],
-                message: format!("Unexpected token {} ", brace_or_comma_token.value),
+                message: format!("Unexpected token {}", brace_or_comma_token.value),
             }))
         }
     }
@@ -1063,6 +1084,8 @@ impl Parser {
         let current_token = self.get_token(index)?;
         let brace_token = self.next_meaningful_token(index, None)?;
         let callee = self.make_identifier(index)?;
+        // Make sure there is a closing brace.
+        let _closing_brace_token = self.find_closing_brace(brace_token.index, 0, "")?;
         let args = self.make_arguments(brace_token.index, vec![])?;
         let closing_brace_token = self.get_token(args.last_index)?;
         let function = if let Some(stdlib_fn) = self.stdlib.get(&callee.name) {
@@ -1105,42 +1128,42 @@ impl Parser {
     ) -> Result<VariableDeclaratorsReturn, KclError> {
         let current_token = self.get_token(index)?;
         let assignment = self.next_meaningful_token(index, None)?;
-        if let Some(assignment_token) = assignment.token {
-            let contents_start_token = self.next_meaningful_token(assignment.index, None)?;
-            let pipe_start_index = if assignment_token.token_type == TokenType::Operator {
-                contents_start_token.index
-            } else {
-                assignment.index
-            };
-            let next_pipe_operator = self.has_pipe_operator(pipe_start_index, None)?;
-            let init: Value;
-            let last_index = if next_pipe_operator.token.is_some() {
-                let pipe_expression_result = self.make_pipe_expression(assignment.index)?;
-                init = Value::PipeExpression(Box::new(pipe_expression_result.expression));
-                pipe_expression_result.last_index
-            } else {
-                let value_result = self.make_value(contents_start_token.index)?;
-                init = value_result.value;
-                value_result.last_index
-            };
-            let current_declarator = VariableDeclarator {
-                start: current_token.start,
-                end: self.get_token(last_index)?.end,
-                id: self.make_identifier(index)?,
-                init,
-            };
-            let mut declarations = previous_declarators;
-            declarations.push(current_declarator);
-            Ok(VariableDeclaratorsReturn {
-                declarations,
-                last_index,
-            })
-        } else {
-            Err(KclError::Unimplemented(KclErrorDetails {
+        let Some(assignment_token) = assignment.token else {
+            return Err(KclError::Unimplemented(KclErrorDetails {
                 source_ranges: vec![current_token.clone().into()],
-                message: format!("Unexpected token {} ", current_token.value),
-            }))
-        }
+                message: format!("Unexpected token {}", current_token.value),
+            }));
+        };
+
+        let contents_start_token = self.next_meaningful_token(assignment.index, None)?;
+        let pipe_start_index = if assignment_token.token_type == TokenType::Operator {
+            contents_start_token.index
+        } else {
+            assignment.index
+        };
+        let next_pipe_operator = self.has_pipe_operator(pipe_start_index, None)?;
+        let init: Value;
+        let last_index = if next_pipe_operator.token.is_some() {
+            let pipe_expression_result = self.make_pipe_expression(assignment.index)?;
+            init = Value::PipeExpression(Box::new(pipe_expression_result.expression));
+            pipe_expression_result.last_index
+        } else {
+            let value_result = self.make_value(contents_start_token.index)?;
+            init = value_result.value;
+            value_result.last_index
+        };
+        let current_declarator = VariableDeclarator {
+            start: current_token.start,
+            end: self.get_token(last_index)?.end,
+            id: self.make_identifier(index)?,
+            init,
+        };
+        let mut declarations = previous_declarators;
+        declarations.push(current_declarator);
+        Ok(VariableDeclaratorsReturn {
+            declarations,
+            last_index,
+        })
     }
 
     fn make_variable_declaration(&self, index: usize) -> Result<VariableDeclarationResult, KclError> {
@@ -1184,7 +1207,7 @@ impl Parser {
         } else {
             Err(KclError::Unimplemented(KclErrorDetails {
                 source_ranges: vec![brace_or_comma_token.into()],
-                message: format!("Unexpected token {} ", brace_or_comma_token.value),
+                message: format!("Unexpected token {}", brace_or_comma_token.value),
             }))
         }
     }
@@ -1192,6 +1215,12 @@ impl Parser {
     fn make_unary_expression(&self, index: usize) -> Result<UnaryExpressionResult, KclError> {
         let current_token = self.get_token(index)?;
         let next_token = self.next_meaningful_token(index, None)?;
+        if next_token.token.is_none() {
+            return Err(KclError::Syntax(KclErrorDetails {
+                source_ranges: vec![current_token.into()],
+                message: "expected another token".to_string(),
+            }));
+        }
         let argument = self.make_value(next_token.index)?;
         let argument_token = self.get_token(argument.last_index)?;
         Ok(UnaryExpressionResult {
@@ -1232,7 +1261,6 @@ impl Parser {
                 return Ok(ExpressionStatementResult {
                     expression: ExpressionStatement {
                         start: current_token.start,
-                        // end: call_expression.last_index,
                         end,
                         expression: Value::CallExpression(Box::new(call_expression.expression)),
                     },
@@ -1314,6 +1342,8 @@ impl Parser {
 
     fn make_object_expression(&self, index: usize) -> Result<ObjectExpressionResult, KclError> {
         let opening_brace_token = self.get_token(index)?;
+        // Make sure there is a closing brace.
+        let _closing_brace = self.find_closing_brace(index, 0, "")?;
         let first_property_token = self.next_meaningful_token(index, None)?;
         let object_properties = self.make_object_properties(first_property_token.index, vec![])?;
         Ok(ObjectExpressionResult {
@@ -1665,7 +1695,7 @@ const key = 'c'"#,
             Some(NoneCodeNode {
                 start: 38,
                 end: 60,
-                value: NoneCodeValue::Block {
+                value: NoneCodeValue::BlockComment {
                     value: "this is a comment".to_string(),
                 },
             }),
@@ -1687,7 +1717,7 @@ const key = 'c'"#,
             Some(NoneCodeNode {
                 start: 106,
                 end: 166,
-                value: NoneCodeValue::Block {
+                value: NoneCodeValue::BlockComment {
                     value: "this is\n      a comment\n      spanning a few lines".to_string(),
                 },
             }),
@@ -2716,4 +2746,139 @@ show(mySk1)"#;
         assert!(result.is_err());
         assert!(result.err().unwrap().to_string().contains("file is empty"));
     }
+
+    #[test]
+    fn test_parse_half_pipe_small() {
+        let tokens = crate::tokeniser::lexer(
+            "const secondExtrude = startSketchAt([0,0])
+  |",
+        );
+        let parser = Parser::new(tokens);
+        let result = parser.ast();
+        assert!(result.is_err());
+        assert!(result.err().unwrap().to_string().contains("Unexpected token"));
+    }
+
+    #[test]
+    fn test_parse_half_pipe() {
+        let tokens = crate::tokeniser::lexer(
+            "const height = 10
+
+const firstExtrude = startSketchAt([0,0])
+  |> line([0, 8], %)
+  |> line([20, 0], %)
+  |> line([0, -8], %)
+  |> close(%)
+  |> extrude(2, %)
+
+show(firstExtrude)
+
+const secondExtrude = startSketchAt([0,0])
+  |",
+        );
+        let parser = Parser::new(tokens);
+        let result = parser.ast();
+        assert!(result.is_err());
+        assert!(result.err().unwrap().to_string().contains("Unexpected token"));
+    }
+
+    #[test]
+    fn test_parse_greater_bang() {
+        let tokens = crate::tokeniser::lexer(">!");
+        let parser = Parser::new(tokens);
+        let result = parser.ast();
+        assert!(result.is_ok());
+    }
+
+    #[test]
+    fn test_parse_z_percent_parens() {
+        let tokens = crate::tokeniser::lexer("z%)");
+        let parser = Parser::new(tokens);
+        let result = parser.ast();
+        assert!(result.is_err());
+        assert!(result.err().unwrap().to_string().contains("Unexpected token"));
+    }
+
+    #[test]
+    fn test_parse_parens_unicode() {
+        let tokens = crate::tokeniser::lexer("(ޜ");
+        let parser = Parser::new(tokens);
+        let result = parser.ast();
+        assert!(result.is_ok());
+    }
+
+    #[test]
+    fn test_parse_nested_open_brackets() {
+        let tokens = crate::tokeniser::lexer(
+            r#"
+z(-[["#,
+        );
+        let parser = Parser::new(tokens);
+        let result = parser.ast();
+        assert!(result.is_err());
+        assert!(result.err().unwrap().to_string().contains("unexpected end"));
+    }
+
+    #[test]
+    fn test_parse_weird_new_line_function() {
+        let tokens = crate::tokeniser::lexer(
+            r#"z
+ (--#"#,
+        );
+        let parser = Parser::new(tokens);
+        let result = parser.ast();
+        assert!(result.is_err());
+        assert!(result.err().unwrap().to_string().contains("unexpected end"));
+    }
+
+    #[test]
+    fn test_parse_weird_lots_of_fancy_brackets() {
+        let tokens = crate::tokeniser::lexer(r#"zz({{{{{{{{)iegAng{{{{{{{##"#);
+        let parser = Parser::new(tokens);
+        let result = parser.ast();
+        assert!(result.is_err());
+        assert!(result.err().unwrap().to_string().contains("unexpected end"));
+    }
+
+    #[test]
+    fn test_parse_weird_close_before_open() {
+        let tokens = crate::tokeniser::lexer(
+            r#"fn)n
+e
+["#,
+        );
+        let parser = Parser::new(tokens);
+        let result = parser.ast();
+        assert!(result.is_err());
+        assert!(result
+            .err()
+            .unwrap()
+            .to_string()
+            .contains("expected to be started on a identifier or literal"));
+    }
+
+    #[test]
+    fn test_parse_weird_close_before_nada() {
+        let tokens = crate::tokeniser::lexer(r#"fn)n-"#);
+        let parser = Parser::new(tokens);
+        let result = parser.ast();
+        assert!(result.is_err());
+        assert!(result.err().unwrap().to_string().contains("expected another token"));
+    }
+
+    #[test]
+    fn test_parse_weird_lots_of_slashes() {
+        let tokens = crate::tokeniser::lexer(
+            r#"J///////////o//+///////////P++++*++++++P///////˟
+++4"#,
+        );
+        let parser = Parser::new(tokens);
+        let result = parser.ast();
+        assert!(result.is_err());
+        assert!(result
+            .err()
+            .unwrap()
+            .to_string()
+            .contains("unexpected end of expression"));
+    }
 }

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

@@ -233,6 +233,7 @@ impl LanguageServer for Backend {
                 document_symbol_provider: Some(OneOf::Left(true)),
                 hover_provider: Some(HoverProviderCapability::Simple(true)),
                 inlay_hint_provider: Some(OneOf::Left(true)),
+                rename_provider: Some(OneOf::Left(true)),
                 semantic_tokens_provider: Some(SemanticTokensServerCapabilities::SemanticTokensRegistrationOptions(
                     SemanticTokensRegistrationOptions {
                         text_document_registration_options: {
@@ -552,19 +553,14 @@ impl LanguageServer for Backend {
             return Ok(None);
         };
         // Now recast it.
-        // Make spaces for the tab size.
-        /*let mut tab_size = String::new();
-        for _ in 0..params.options.tab_size {
-            tab_size.push(' ');
-        }*/
-        // TODO: use the tab size.
-        let mut recast = ast.recast("", false).trim().to_string();
-        if let Some(insert_final_newline) = params.options.insert_final_newline {
-            if insert_final_newline {
-                recast.push('\n');
-            }
-        }
-
+        let recast = ast.recast(
+            &crate::abstract_syntax_tree_types::FormatOptions {
+                tab_size: params.options.tab_size as usize,
+                insert_final_newline: params.options.insert_final_newline.unwrap_or(false),
+                use_tabs: !params.options.insert_spaces,
+            },
+            0,
+        );
         let source_range = SourceRange([0, current_code.len() - 1]);
         let range = source_range.to_lsp_range(&current_code);
         Ok(Some(vec![TextEdit {
@@ -572,6 +568,43 @@ impl LanguageServer for Backend {
             range,
         }]))
     }
+
+    async fn rename(&self, params: RenameParams) -> RpcResult<Option<WorkspaceEdit>> {
+        let filename = params.text_document_position.text_document.uri.to_string();
+
+        let Some(current_code) = self.current_code_map.get(&filename) else {
+            return Ok(None);
+        };
+
+        // Parse the ast.
+        // I don't know if we need to do this again since it should be updated in the context.
+        // But I figure better safe than sorry since this will write back out to the file.
+        let tokens = crate::tokeniser::lexer(&current_code);
+        let parser = crate::parser::Parser::new(tokens);
+        let Ok(mut ast) = parser.ast() else {
+            return Ok(None);
+        };
+
+        // Let's convert the position to a character index.
+        let pos = position_to_char_index(params.text_document_position.position, &current_code);
+        // Now let's perform the rename on the ast.
+        ast.rename_symbol(&params.new_name, pos);
+        // Now recast it.
+        let recast = ast.recast(&Default::default(), 0);
+        let source_range = SourceRange([0, current_code.len() - 1]);
+        let range = source_range.to_lsp_range(&current_code);
+        Ok(Some(WorkspaceEdit {
+            changes: Some(HashMap::from([(
+                params.text_document_position.text_document.uri,
+                vec![TextEdit {
+                    new_text: recast,
+                    range,
+                }],
+            )])),
+            document_changes: None,
+            change_annotations: None,
+        }))
+    }
 }
 
 /// Get completions from our stdlib.

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

@@ -206,8 +206,8 @@ fn is_block_comment(character: &str) -> bool {
     BLOCKCOMMENT.is_match(character)
 }
 
-fn match_first(str: &str, regex: &Regex) -> Option<String> {
-    regex.find(str).map(|the_match| the_match.as_str().to_string())
+fn match_first(s: &str, regex: &Regex) -> Option<String> {
+    regex.find(s).map(|the_match| the_match.as_str().to_string())
 }
 
 fn make_token(token_type: TokenType, value: &str, start: usize) -> Token {
@@ -219,8 +219,8 @@ fn make_token(token_type: TokenType, value: &str, start: usize) -> Token {
     }
 }
 
-fn return_token_at_index(str: &str, start_index: usize) -> Option<Token> {
-    let str_from_index = &str[start_index..];
+fn return_token_at_index(s: &str, start_index: usize) -> Option<Token> {
+    let str_from_index = &s.chars().skip(start_index).collect::<String>();
     if is_string(str_from_index) {
         return Some(make_token(
             TokenType::String,
@@ -348,21 +348,22 @@ fn return_token_at_index(str: &str, start_index: usize) -> Option<Token> {
     None
 }
 
-pub fn lexer(str: &str) -> Vec<Token> {
-    fn recursively_tokenise(str: &str, current_index: usize, previous_tokens: Vec<Token>) -> Vec<Token> {
-        if current_index >= str.len() {
-            return previous_tokens;
-        }
-        let token = return_token_at_index(str, current_index);
-        let Some(token) = token else {
-            return recursively_tokenise(str, current_index + 1, previous_tokens);
-        };
-        let mut new_tokens = previous_tokens;
-        let token_length = token.value.len();
-        new_tokens.push(token);
-        recursively_tokenise(str, current_index + token_length, new_tokens)
+fn recursively_tokenise(s: &str, current_index: usize, previous_tokens: Vec<Token>) -> Vec<Token> {
+    if current_index >= s.len() {
+        return previous_tokens;
     }
-    recursively_tokenise(str, 0, Vec::new())
+    let token = return_token_at_index(s, current_index);
+    let Some(token) = token else {
+        return recursively_tokenise(s, current_index + 1, previous_tokens);
+    };
+    let mut new_tokens = previous_tokens;
+    let token_length = token.value.len();
+    new_tokens.push(token);
+    recursively_tokenise(s, current_index + token_length, new_tokens)
+}
+
+pub fn lexer(s: &str) -> Vec<Token> {
+    recursively_tokenise(s, 0, Vec::new())
 }
 
 #[cfg(test)]

src/wasm-lib/src/lib.rs

@@ -76,7 +76,8 @@ pub fn recast_wasm(json_str: &str) -> Result<JsValue, JsError> {
     let program: kcl_lib::abstract_syntax_tree_types::Program =
         serde_json::from_str(json_str).map_err(JsError::from)?;
 
-    let result = program.recast("", false);
+    // Use the default options until we integrate into the UI the ability to change them.
+    let result = program.recast(&Default::default(), 0);
     Ok(JsValue::from_serde(&result)?)
 }
 

yarn.lock

@@ -1530,10 +1530,10 @@
   resolved "https://registry.yarnpkg.com/@juggle/resize-observer/-/resize-observer-3.4.0.tgz#08d6c5e20cf7e4cc02fd181c4b0c225cd31dbb60"
   integrity sha512-dfLbk+PwWvFzSxwk3n5ySL0hfBog779o8h68wK/7/APo/7cgyWp5jcXockbxdk5kFRkbeXWm4Fbi9FrdN381sA==
 
-"@kittycad/lib@^0.0.35":
-  version "0.0.35"
-  resolved "https://registry.yarnpkg.com/@kittycad/lib/-/lib-0.0.35.tgz#bde8868048f9fd53f8309e7308aeba622898b935"
-  integrity sha512-qM8AyP2QUlDfPWNxb1Fs/Pq9AebGVDN1OHjByxbGomKCy0jFdN2TsyDdhQH/CAZGfBCgPEfr5bq6rkUBGSXcNw==
+"@kittycad/lib@^0.0.37":
+  version "0.0.37"
+  resolved "https://registry.yarnpkg.com/@kittycad/lib/-/lib-0.0.37.tgz#ec4f6c4fb5d06402a19339f3374036b6582d2265"
+  integrity sha512-P8p9FeLV79/0Lfd0RioBta1drzhmpROnU4YV38+zsAA4LhibQCTjeekRkxVvHztGumPxz9pPsAeeLJyuz2RWKQ==
   dependencies:
     node-fetch "3.3.2"
     openapi-types "^12.0.0"