Update kcl-samples simulation test output

e2e/playwright/sketch-tests.spec.ts

@@ -1733,7 +1733,7 @@ profile003 = startProfile(sketch001, at = [206.63, -56.73])
       await page.waitForTimeout(600)
     })
 
-    const codeFromTangentialArc = `  |> tangentialArc(end = [-10.82, 144.95])`
+    const codeFromTangentialArc = `  |> tangentialArc(endAbsolute = [39.49, 88.22])`
     await test.step('check that tangential tool does not snap to other profile starts', async () => {
       await toolbar.selectTangentialArc()
       await page.waitForTimeout(1000)
@@ -1755,7 +1755,7 @@ profile003 = startProfile(sketch001, at = [206.63, -56.73])
       // check pixel is now gray at tanArcLocation to verify code has executed
       await scene.expectPixelColor([26, 26, 26], tanArcLocation, 15)
       await editor.expectEditor.not.toContain(
-        `tangentialArc(end = [-10.82, 144.95])`
+        `tangentialArc(endAbsolute = [39.49, 88.22])`
       )
     })
 
@@ -1955,7 +1955,7 @@ profile003 = startProfile(sketch001, at = [206.63, -56.73])
 
       await endArcStartLine()
       await editor.expectEditor.toContain(
-        `|> tangentialArc(end = [2.98, -7.52])`
+        `|> tangentialArc(endAbsolute = [16.61, 4.14])`
       )
 
       // Add a three-point arc segment
@@ -3181,7 +3181,7 @@ test.describe('Redirecting to home page and back to the original file should cle
 sketch001 = startSketchOn(XZ)
 profile001 = startProfile(sketch001, at = [0, 0])
   |> line(end = [191.39, 191.39])
-  |> tangentialArc(end = [95.69, -95.7], tag = $seg01)
+  |> tangentialArc(endAbsolute = [287.08, 95.69], tag = $seg01)
   |> angledLine(angle = tangentToEnd(seg01), length = 135.34)
   |> arc(interiorAbsolute = [191.39, -95.69], endAbsolute = [287.08, -95.69], tag = $seg02)
   |> angledLine(angle = tangentToEnd(seg02) + turns::HALF_TURN, length = 270.67)

e2e/playwright/snapshot-tests.spec.ts

@@ -375,22 +375,22 @@ test.describe(
       await expect(u.codeLocator).toHaveText(code)
 
       await toolbar.selectTangentialArc()
-      await page.waitForTimeout(200)
+      await page.waitForTimeout(100)
 
       // click to continue profile
       await page.mouse.click(813, 392)
-      await page.waitForTimeout(300)
+      await page.waitForTimeout(100)
 
       await page.mouse.click(startXPx + PUR * 30, 500 - PUR * 20)
 
       code += `
-  |> tangentialArc(end = [184.31, 184.31])`
+  |> tangentialArc(endAbsolute = [551.2, -62.01])`
       await expect(u.codeLocator).toHaveText(code)
 
       // click tangential arc tool again to unequip it
       // it will be available directly in the toolbar since it was last equipped
       await toolbar.tangentialArcBtn.click()
-      await page.waitForTimeout(1000)
+      await page.waitForTimeout(100)
 
       // screen shot should show the sketch
       await expect(page).toHaveScreenshot({
@@ -472,20 +472,20 @@ test.describe(
       await expect(u.codeLocator).toHaveText(code)
 
       await toolbar.selectTangentialArc()
-      await page.waitForTimeout(200)
+      await page.waitForTimeout(100)
 
       // click to continue profile
       await page.mouse.click(813, 392)
-      await page.waitForTimeout(300)
+      await page.waitForTimeout(100)
 
       await page.mouse.click(startXPx + PUR * 30, 500 - PUR * 20)
 
       code += `
-  |> tangentialArc(end = [184.31, 184.31])`
+  |> tangentialArc(endAbsolute = [551.2, -62.01])`
       await expect(u.codeLocator).toHaveText(code)
 
       await toolbar.tangentialArcBtn.click()
-      await page.waitForTimeout(1000)
+      await page.waitForTimeout(100)
 
       // screen shot should show the sketch
       await expect(page).toHaveScreenshot({

e2e/playwright/test-network-and-connection-issues.spec.ts

@@ -61,7 +61,7 @@ test.describe('Test network related behaviors', () => {
       })
 
       // Expect the network to be down
-      await expect(networkToggle).toContainText('Problem')
+      await expect(networkToggle).toContainText('Network health (Offline)')
 
       // Click the network widget
       await networkWidget.click()
@@ -156,7 +156,8 @@ test.describe('Test network related behaviors', () => {
 
       // Expect the network to be down
       await networkToggle.hover()
-      await expect(networkToggle).toContainText('Problem')
+
+      await expect(networkToggle).toContainText('Network health (Offline)')
 
       // Ensure we are not in sketch mode
       await expect(

e2e/playwright/test-utils.ts

@@ -364,11 +364,6 @@ export async function getUtils(page: Page, test_?: typeof test) {
     )
   }
 
-  // Chrome devtools protocol session only works in Chromium
-  const browserType = page.context().browser()?.browserType().name()
-  const cdpSession =
-    browserType !== 'chromium' ? null : await page.context().newCDPSession(page)
-
   const util = {
     waitForAuthSkipAppStart: () => waitForAuthAndLsp(page),
     waitForPageLoad: () => waitForPageLoad(page),
@@ -489,15 +484,9 @@ export async function getUtils(page: Page, test_?: typeof test) {
     emulateNetworkConditions: async (
       networkOptions: Protocol.Network.emulateNetworkConditionsParameters
     ) => {
-      if (cdpSession === null) {
-        // Use a fail safe if we can't simulate disconnect (on Safari)
-        return page.evaluate('window.engineCommandManager.tearDown()')
-      }
-
-      return cdpSession?.send(
-        'Network.emulateNetworkConditions',
-        networkOptions
-      )
+      return networkOptions.offline
+        ? page.evaluate('window.engineCommandManager.offline()')
+        : page.evaluate('window.engineCommandManager.online()')
     },
 
     toNormalizedCode(text: string) {

public/kcl-samples/pipe-flange-assembly/1120t74-pipe.kcl

@@ -7,17 +7,13 @@
 // Import parameters
 import pipeInnerDiameter, pipeOuterDiameter, pipeLength from "parameters.kcl"
 
-// Create a function to make the pipe. Export
-export fn pipe() {
-  // Create the pipe base
-  pipeBase = startSketchOn(XZ)
+// Create the pipe base
+pipeBase = startSketchOn(XZ)
   |> circle(%, center = [0, 0], radius = pipeOuterDiameter / 2)
   |> extrude(%, length = pipeLength)
 
-  // Extrude a hole through the length of the pipe
-  pipe = startSketchOn(pipeBase, face = END)
+// Extrude a hole through the length of the pipe
+startSketchOn(pipeBase, face = END)
   |> circle(center = [0, 0], radius = pipeInnerDiameter / 2)
   |> extrude(%, length = -pipeLength)
   |> appearance(color = "#a24ed0")
-  return pipe
-}

public/kcl-samples/pipe-flange-assembly/68095k348-flange.kcl

@@ -7,10 +7,8 @@
 // Import parameters
 import pipeDiameter, mountingHoleDiameter, mountingHolePlacementDiameter, flangeDiameter, flangeTotalThickness, flangeBackHeight, flangeFrontHeight, flangeBaseThickness, flangeBackDiameter, flangeFrontDiameter from "parameters.kcl"
 
-// Create a function to create the flange. We must create a function since we are using multiple flanges.
-export fn flange() {
-  // Sketch the mounting hole pattern
-  mountingHoles = startSketchOn(XY)
+// Sketch the mounting hole pattern
+mountingHoles = startSketchOn(XY)
   |> circle(%, center = [0, mountingHolePlacementDiameter / 2], radius = mountingHoleDiameter / 2)
   |> patternCircular2d(
        %,
@@ -20,25 +18,22 @@ export fn flange() {
        rotateDuplicates = false,
      )
 
-  // Create the flange base
-  flangeBase = startSketchOn(XY)
+// Create the flange base
+flangeBase = startSketchOn(XY)
   |> circle(%, center = [0, 0], radius = flangeDiameter / 2)
   |> subtract2d(tool = mountingHoles)
   |> extrude(%, length = flangeBaseThickness)
 
-  // Create both the raised portions on the front and back of the flange base
-  flangeBack = startSketchOn(flangeBase, face = START)
+// Create both the raised portions on the front and back of the flange base
+flangeBack = startSketchOn(flangeBase, face = START)
   |> circle(%, center = [0, 0], radius = flangeBackDiameter / 2)
   |> extrude(%, length = flangeBackHeight)
-  flangeFront = startSketchOn(flangeBase, face = END)
+flangeFront = startSketchOn(flangeBase, face = END)
   |> circle(%, center = [0, 0], radius = flangeFrontDiameter / 2)
   |> extrude(%, length = flangeFrontHeight)
 
-  // Create the circular cut in the center for the pipe
-  pipeCut = startSketchOn(flangeFront, face = END)
+// Create the circular cut in the center for the pipe
+startSketchOn(flangeFront, face = END)
   |> circle(%, center = [0, 0], radius = pipeDiameter / 2)
   |> extrude(%, length = -flangeTotalThickness)
   |> appearance(%, color = "#bab0b0")
-
-  return pipeCut
-}

public/kcl-samples/pipe-flange-assembly/91251a404-bolt.kcl

@@ -7,16 +7,14 @@
 // Import parameters
 import boltDiameter, boltLength, boltHeadLength, boltHeadDiameter, boltHexDrive, boltHexFlatLength, boltThreadLength from "parameters.kcl"
 
-// Create a function to make a the bolt
-export fn bolt() {
-  // Create the head of the cap screw
-  boltHead = startSketchOn(XZ)
+// Create the head of the cap screw
+boltHead = startSketchOn(XZ)
   |> circle(center = [0, 0], radius = boltHeadDiameter / 2, tag = $topEdge)
   |> extrude(length = -boltHeadLength)
   |> fillet(radius = 0.020, tags = [topEdge, getOppositeEdge(topEdge)])
 
-  // Define the sketch of the hex pattern on the screw head and extrude into the head
-  hexPatternSketch = startSketchOn(boltHead, face = START)
+// Define the sketch of the hex pattern on the screw head and extrude into the head
+hexPatternSketch = startSketchOn(boltHead, face = START)
   |> startProfile(at = [
        boltHexDrive / 2,
        boltHexFlatLength / 2
@@ -29,11 +27,8 @@ export fn bolt() {
   |> close()
   |> extrude(length = -boltHeadLength * 0.75)
 
-  // create the body of the bolt
-  boltBody = startSketchOn(boltHead, face = END)
+// create the body of the bolt
+startSketchOn(boltHead, face = END)
   |> circle(center = [0, 0], radius = boltDiameter / 2, tag = $filletEdge)
   |> extrude(length = boltLength)
   |> appearance(color = "#4dd043", metalness = 90, roughness = 90)
-
-  return boltBody
-}

public/kcl-samples/pipe-flange-assembly/95479a127-hex-nut.kcl

@@ -7,10 +7,8 @@
 // Import parameters
 import hexNutDiameter, hexNutFlatToFlat, hexNutThickness, hexNutFlatLength from "parameters.kcl"
 
-// Create a function to make the hex nut. Must be a function since multiple hex nuts are used
-export fn hexNut() {
-  // Create the base of the hex nut
-  hexNutBase = startSketchOn(XY)
+// Create the base of the hex nut
+hexNutBase = startSketchOn(XY)
   |> startProfile(at = [
        hexNutFlatToFlat / 2,
        hexNutFlatLength / 2
@@ -23,11 +21,8 @@ export fn hexNut() {
   |> close()
   |> extrude(length = hexNutThickness)
 
-  // Create the hole in the center of the hex nut
-  hexNut = startSketchOn(hexNutBase, face = END)
+// Create the hole in the center of the hex nut
+startSketchOn(hexNutBase, face = END)
   |> circle(center = [0, 0], radius = hexNutDiameter / 2)
   |> extrude(%, length = -hexNutThickness)
   |> appearance(%, color = "#4edfd5")
-
-  return hexNut
-}

public/kcl-samples/pipe-flange-assembly/98017a257-washer.kcl

@@ -7,18 +7,13 @@
 // Import parameters
 import washerInnerDia, washerOuterDia, washerThickness from "parameters.kcl"
 
-// Create a function to make the washer. Must be a function since multiple washers are used.
-export fn washer() {
-  // Create the base of the washer
-  washerBase = startSketchOn(XY)
+// Create the base of the washer
+washerBase = startSketchOn(XY)
   |> circle(center = [0, 0], radius = washerOuterDia / 2)
   |> extrude(length = washerThickness)
 
-  // Extrude a hole through the washer
-  washer = startSketchOn(washerBase, face = END)
+// Extrude a hole through the washer
+washer = startSketchOn(washerBase, face = END)
   |> circle(center = [0, 0], radius = washerInnerDia / 2)
   |> extrude(%, length = -washerThickness)
   |> appearance(%, color = "#ee4f4f")
-
-  return washer
-}

public/kcl-samples/pipe-flange-assembly/main.kcl

@@ -9,16 +9,19 @@ import * from "parameters.kcl"
 
 // Import parts
 import "9472k188-gasket.kcl" as gasket
-import flange from "68095k348-flange.kcl"
-import washer from "98017a257-washer.kcl"
-import bolt from "91251a404-bolt.kcl"
-import hexNut from "95479a127-hex-nut.kcl"
-import pipe from "1120t74-pipe.kcl"
+import "68095k348-flange.kcl" as flange
+import "98017a257-washer.kcl" as washer
+import "91251a404-bolt.kcl" as bolt
+import "95479a127-hex-nut.kcl" as hexNut
+import "1120t74-pipe.kcl" as pipe
 
-// Place flanges
-flange()
-flange()
-  |> rotate(axis = [0, 1, 0], angle = 180)
+// Place flange clone
+rotate(
+       clone(flange),
+       roll = 180,
+       pitch = 0,
+       yaw = 0,
+     )
   |> translate(x = 0, y = 0, z = flangeBackHeight * 2 + gasketThickness)
 
 // Place gasket between the flanges
@@ -26,7 +29,7 @@ gasket
   |> translate(x = 0, y = 0, z = -flangeBackHeight - gasketThickness)
 
 // Place eight washers (four front, four back)
-washer()
+washer
   |> translate(x = mountingHolePlacementDiameter / 2, y = 0, z = flangeBaseThickness)
   |> patternCircular3d(
        %,
@@ -44,7 +47,8 @@ washer()
      )
 
 // Place four bolts
-bolt()
+
+bolt
   |> translate(x = mountingHolePlacementDiameter / 2, y = 0, z = flangeBaseThickness + washerThickness)
   |> rotate(roll = 90, pitch = 0, yaw = 0)
   |> patternCircular3d(
@@ -57,7 +61,7 @@ bolt()
      )
 
 // Place four hex nuts
-hexNut()
+hexNut
   |> translate(x = mountingHolePlacementDiameter / 2, y = 0, z = -(flangeBackHeight * 2 + gasketThickness + flangeBaseThickness + washerThickness + hexNutThickness))
   |> patternCircular3d(
        %,
@@ -69,9 +73,8 @@ hexNut()
      )
 
 // Place both pieces of pipe
-pipe()
-  |> rotate(
-       %,
+rotate(
+       pipe,
        roll = -90,
        pitch = 0,
        yaw = 0,
@@ -83,16 +86,13 @@ pipe()
        z = flangeBaseThickness + flangeFrontHeight - 0.5,
        global = true,
      )
-
-pipe()
-  |> rotate(
-       %,
-       roll = 90,
+rotate(
+       clone(pipe),
+       roll = 180,
        pitch = 0,
        yaw = 0,
      )
   |> translate(
-       %,
        x = 0,
        y = 0,
        z = -(flangeBackHeight * 2 + gasketThickness + flangeBaseThickness + flangeFrontHeight - 0.5),

rust/kcl-lib/tests/kcl_samples/axial-fan/artifact_graph_flowchart.snap.md

@@ -652,19 +652,19 @@ flowchart LR
   84 --- 144
   84 --- 237
   86 --- 168
-  86 x--> 188
+  86 x--> 189
   86 --- 212
   86 --- 256
   88 --- 169
-  88 x--> 188
+  88 x--> 189
   88 --- 213
   88 --- 257
   90 --- 167
-  90 x--> 188
+  90 x--> 189
   90 --- 214
   90 --- 258
   92 --- 170
-  92 x--> 188
+  92 x--> 189
   92 --- 215
   92 --- 259
   119 --- 133
@@ -946,10 +946,10 @@ flowchart LR
   218 <--x 186
   219 <--x 186
   194 <--x 187
-  212 <--x 189
-  213 <--x 189
-  214 <--x 189
-  215 <--x 189
+  212 <--x 188
+  213 <--x 188
+  214 <--x 188
+  215 <--x 188
   220 <--x 268
   223 <--x 267
 ```

rust/kcl-lib/tests/kcl_samples/bottle/artifact_graph_flowchart.snap.md

@@ -87,20 +87,20 @@ flowchart LR
   27 --- 4
   8 --- 20
   8 x--> 25
-  8 --- 29
-  8 --- 35
+  8 --- 30
+  8 --- 36
   9 --- 21
   9 x--> 25
   9 --- 33
   9 --- 39
   10 --- 22
   10 x--> 25
-  10 --- 30
-  10 --- 36
+  10 --- 31
+  10 --- 37
   11 --- 23
   11 x--> 25
-  11 --- 31
-  11 --- 37
+  11 --- 29
+  11 --- 35
   12 --- 24
   12 x--> 25
   12 --- 32
@@ -132,18 +132,18 @@ flowchart LR
   18 --- 34
   19 --- 28
   19 --- 34
-  20 --- 29
-  20 --- 35
-  36 <--x 20
+  20 --- 30
+  20 --- 36
+  37 <--x 20
   21 --- 33
   35 <--x 21
   21 --- 39
-  22 --- 30
-  22 --- 36
-  37 <--x 22
-  23 --- 31
-  23 --- 37
-  38 <--x 23
+  22 --- 31
+  22 --- 37
+  38 <--x 22
+  23 --- 29
+  23 --- 35
+  36 <--x 23
   24 --- 32
   24 --- 38
   39 <--x 24

rust/kcl-lib/tests/kcl_samples/cold-plate/artifact_graph_flowchart.snap.md

@@ -366,114 +366,114 @@ flowchart LR
   11 ---- 74
   26 --- 75
   26 x--> 108
-  26 --- 130
-  26 --- 162
+  26 --- 114
+  26 --- 146
   27 --- 76
   27 x--> 108
-  27 --- 116
-  27 --- 148
+  27 --- 139
+  27 --- 171
   28 --- 77
   28 x--> 108
-  28 --- 139
-  28 --- 171
+  28 --- 135
+  28 --- 167
   29 --- 78
   29 x--> 108
-  29 --- 135
-  29 --- 167
+  29 --- 133
+  29 --- 165
   30 --- 79
   30 x--> 108
-  30 --- 128
-  30 --- 160
+  30 --- 121
+  30 --- 153
   31 --- 80
   31 x--> 108
-  31 --- 123
-  31 --- 155
+  31 --- 115
+  31 --- 147
   32 --- 81
   32 x--> 108
-  32 --- 127
-  32 --- 159
+  32 --- 129
+  32 --- 161
   33 --- 82
   33 x--> 108
-  33 --- 132
-  33 --- 164
+  33 --- 131
+  33 --- 163
   34 --- 83
   34 x--> 108
-  34 --- 133
-  34 --- 165
+  34 --- 138
+  34 --- 170
   35 --- 84
   35 x--> 108
-  35 --- 121
-  35 --- 153
+  35 --- 119
+  35 --- 151
   36 --- 85
   36 x--> 108
-  36 --- 137
-  36 --- 169
+  36 --- 125
+  36 --- 157
   37 --- 86
   37 x--> 108
-  37 --- 115
-  37 --- 147
+  37 --- 117
+  37 --- 149
   38 --- 87
   38 x--> 108
-  38 --- 120
-  38 --- 152
+  38 --- 122
+  38 --- 154
   39 --- 88
   39 x--> 108
-  39 --- 124
-  39 --- 156
+  39 --- 113
+  39 --- 145
   40 --- 89
   40 x--> 108
-  40 --- 134
-  40 --- 166
+  40 --- 124
+  40 --- 156
   41 --- 90
   41 x--> 108
-  41 --- 136
-  41 --- 168
+  41 --- 134
+  41 --- 166
   42 --- 91
   42 x--> 108
-  42 --- 122
-  42 --- 154
+  42 --- 132
+  42 --- 164
   43 --- 92
   43 x--> 108
-  43 --- 114
-  43 --- 146
+  43 --- 120
+  43 --- 152
   44 --- 93
   44 x--> 108
-  44 --- 113
-  44 --- 145
+  44 --- 118
+  44 --- 150
   45 --- 94
   45 x--> 108
-  45 --- 131
-  45 --- 163
+  45 --- 137
+  45 --- 169
   46 --- 95
   46 x--> 108
-  46 --- 117
-  46 --- 149
+  46 --- 130
+  46 --- 162
   47 --- 96
   47 x--> 108
-  47 --- 125
-  47 --- 157
+  47 --- 126
+  47 --- 158
   48 --- 97
   48 x--> 108
-  48 --- 119
-  48 --- 151
+  48 --- 128
+  48 --- 160
   49 --- 98
   49 x--> 108
-  49 --- 126
-  49 --- 158
+  49 --- 127
+  49 --- 159
   50 --- 99
   50 x--> 108
-  50 --- 118
-  50 --- 150
+  50 --- 136
+  50 --- 168
   51 --- 100
   51 x--> 108
-  51 --- 129
-  51 --- 161
+  51 --- 116
+  51 --- 148
   52 --- 101
   52 x--> 108
-  52 --- 138
-  52 --- 170
+  52 --- 123
+  52 --- 155
   61 --- 102
-  61 x--> 110
+  61 x--> 109
   61 --- 140
   61 --- 172
   63 --- 103
@@ -594,87 +594,87 @@ flowchart LR
   74 --- 174
   74 --- 175
   74 --- 176
-  75 --- 130
-  75 --- 162
-  163 <--x 75
-  76 --- 116
-  76 --- 148
-  149 <--x 76
-  77 --- 139
-  145 <--x 77
-  77 --- 171
-  78 --- 135
-  78 --- 167
-  168 <--x 78
-  79 --- 128
-  79 --- 160
-  161 <--x 79
-  80 --- 123
-  80 --- 155
-  156 <--x 80
-  81 --- 127
-  81 --- 159
-  160 <--x 81
-  82 --- 132
-  82 --- 164
-  165 <--x 82
-  83 --- 133
-  83 --- 165
-  166 <--x 83
-  84 --- 121
-  84 --- 153
-  154 <--x 84
-  85 --- 137
-  85 --- 169
-  170 <--x 85
-  86 --- 115
-  86 --- 147
-  148 <--x 86
-  87 --- 120
-  87 --- 152
-  153 <--x 87
-  88 --- 124
-  88 --- 156
-  157 <--x 88
-  89 --- 134
-  89 --- 166
-  167 <--x 89
-  90 --- 136
-  90 --- 168
-  169 <--x 90
-  91 --- 122
-  91 --- 154
-  155 <--x 91
-  92 --- 114
-  92 --- 146
-  147 <--x 92
-  93 --- 113
-  93 --- 145
-  146 <--x 93
-  94 --- 131
-  94 --- 163
-  164 <--x 94
-  95 --- 117
-  95 --- 149
-  150 <--x 95
-  96 --- 125
-  96 --- 157
-  158 <--x 96
-  97 --- 119
-  97 --- 151
-  152 <--x 97
-  98 --- 126
-  98 --- 158
-  159 <--x 98
-  99 --- 118
-  99 --- 150
-  151 <--x 99
-  100 --- 129
-  100 --- 161
-  162 <--x 100
-  101 --- 138
-  101 --- 170
-  171 <--x 101
+  75 --- 114
+  75 --- 146
+  147 <--x 75
+  76 --- 139
+  145 <--x 76
+  76 --- 171
+  77 --- 135
+  77 --- 167
+  168 <--x 77
+  78 --- 133
+  78 --- 165
+  166 <--x 78
+  79 --- 121
+  79 --- 153
+  154 <--x 79
+  80 --- 115
+  80 --- 147
+  148 <--x 80
+  81 --- 129
+  81 --- 161
+  162 <--x 81
+  82 --- 131
+  82 --- 163
+  164 <--x 82
+  83 --- 138
+  83 --- 170
+  171 <--x 83
+  84 --- 119
+  84 --- 151
+  152 <--x 84
+  85 --- 125
+  85 --- 157
+  158 <--x 85
+  86 --- 117
+  86 --- 149
+  150 <--x 86
+  87 --- 122
+  87 --- 154
+  155 <--x 87
+  88 --- 113
+  88 --- 145
+  146 <--x 88
+  89 --- 124
+  89 --- 156
+  157 <--x 89
+  90 --- 134
+  90 --- 166
+  167 <--x 90
+  91 --- 132
+  91 --- 164
+  165 <--x 91
+  92 --- 120
+  92 --- 152
+  153 <--x 92
+  93 --- 118
+  93 --- 150
+  151 <--x 93
+  94 --- 137
+  94 --- 169
+  170 <--x 94
+  95 --- 130
+  95 --- 162
+  163 <--x 95
+  96 --- 126
+  96 --- 158
+  159 <--x 96
+  97 --- 128
+  97 --- 160
+  161 <--x 97
+  98 --- 127
+  98 --- 159
+  160 <--x 98
+  99 --- 136
+  99 --- 168
+  169 <--x 99
+  100 --- 116
+  100 --- 148
+  149 <--x 100
+  101 --- 123
+  101 --- 155
+  156 <--x 101
   102 --- 140
   102 --- 172
   103 --- 144
@@ -689,7 +689,7 @@ flowchart LR
   106 --- 141
   106 --- 173
   174 <--x 106
-  140 <--x 109
+  140 <--x 110
   141 <--x 111
   142 <--x 111
   143 <--x 111

rust/kcl-lib/tests/kcl_samples/helium-tank/artifact_graph_flowchart.snap.md

@@ -582,48 +582,48 @@ flowchart LR
   46 --- 226
   72 --- 112
   72 x--> 151
-  72 --- 167
-  72 --- 201
+  72 --- 163
+  72 --- 197
   73 --- 113
   73 x--> 151
-  73 --- 169
-  73 --- 203
+  73 --- 164
+  73 --- 198
   74 --- 114
   74 x--> 151
   74 --- 168
   74 --- 202
   75 --- 115
   75 x--> 151
-  75 --- 166
-  75 --- 200
+  75 --- 165
+  75 --- 199
   76 --- 116
   76 x--> 151
-  76 --- 165
-  76 --- 199
+  76 --- 162
+  76 --- 196
   77 --- 117
   77 x--> 151
   77 --- 161
   77 --- 195
   78 --- 118
   78 x--> 151
-  78 --- 162
-  78 --- 196
+  78 --- 167
+  78 --- 201
   79 --- 119
   79 x--> 151
-  79 --- 163
-  79 --- 197
+  79 --- 170
+  79 --- 204
   80 --- 120
   80 x--> 151
-  80 --- 170
-  80 --- 204
+  80 --- 160
+  80 --- 194
   81 --- 121
   81 x--> 151
-  81 --- 160
-  81 --- 194
+  81 --- 169
+  81 --- 203
   82 --- 122
   82 x--> 151
-  82 --- 164
-  82 --- 198
+  82 --- 166
+  82 --- 200
   84 --- 123
   84 x--> 145
   84 --- 171
@@ -756,39 +756,39 @@ flowchart LR
   109 --- 107
   111 --- 159
   111 --- 193
-  112 --- 167
-  112 --- 201
-  202 <--x 112
-  113 --- 169
-  113 --- 203
-  204 <--x 113
+  112 --- 163
+  112 --- 197
+  198 <--x 112
+  113 --- 164
+  113 --- 198
+  199 <--x 113
   114 --- 168
   114 --- 202
   203 <--x 114
-  115 --- 166
-  115 --- 200
-  201 <--x 115
-  116 --- 165
-  116 --- 199
-  200 <--x 116
+  115 --- 165
+  115 --- 199
+  200 <--x 115
+  116 --- 162
+  116 --- 196
+  197 <--x 116
   117 --- 161
   117 --- 195
   196 <--x 117
-  118 --- 162
-  118 --- 196
-  197 <--x 118
-  119 --- 163
-  119 --- 197
-  198 <--x 119
-  120 --- 170
-  194 <--x 120
-  120 --- 204
-  121 --- 160
-  121 --- 194
-  195 <--x 121
-  122 --- 164
-  122 --- 198
-  199 <--x 122
+  118 --- 167
+  118 --- 201
+  202 <--x 118
+  119 --- 170
+  194 <--x 119
+  119 --- 204
+  120 --- 160
+  120 --- 194
+  195 <--x 120
+  121 --- 169
+  121 --- 203
+  204 <--x 121
+  122 --- 166
+  122 --- 200
+  201 <--x 122
   123 --- 171
   123 --- 205
   124 --- 186

rust/kcl-lib/tests/kcl_samples/i-beam/artifact_graph_flowchart.snap.md

@@ -177,72 +177,72 @@ flowchart LR
   2 ---- 34
   17 --- 35
   17 x--> 52
-  17 --- 58
-  17 --- 75
+  17 --- 67
+  17 --- 84
   18 --- 36
   18 x--> 52
-  18 --- 66
-  18 --- 83
+  18 --- 65
+  18 --- 82
   19 --- 37
   19 x--> 52
-  19 --- 60
-  19 --- 77
+  19 --- 55
+  19 --- 72
   20 --- 38
   20 x--> 52
   20 --- 61
   20 --- 78
   21 --- 39
   21 x--> 52
-  21 --- 67
-  21 --- 84
+  21 --- 69
+  21 --- 86
   22 --- 40
   22 x--> 52
   22 --- 63
   22 --- 80
   23 --- 41
   23 x--> 52
-  23 --- 56
-  23 --- 73
+  23 --- 60
+  23 --- 77
   24 --- 42
   24 x--> 52
   24 --- 54
   24 --- 71
   25 --- 43
   25 x--> 52
-  25 --- 70
-  25 --- 87
+  25 --- 66
+  25 --- 83
   26 --- 44
   26 x--> 52
-  26 --- 68
-  26 --- 85
+  26 --- 57
+  26 --- 74
   27 --- 45
   27 x--> 52
-  27 --- 65
-  27 --- 82
+  27 --- 64
+  27 --- 81
   28 --- 46
   28 x--> 52
-  28 --- 62
-  28 --- 79
+  28 --- 58
+  28 --- 75
   29 --- 47
   29 x--> 52
-  29 --- 57
-  29 --- 74
+  29 --- 59
+  29 --- 76
   30 --- 48
   30 x--> 52
-  30 --- 55
-  30 --- 72
+  30 --- 56
+  30 --- 73
   31 --- 49
   31 x--> 52
-  31 --- 64
-  31 --- 81
+  31 --- 62
+  31 --- 79
   32 --- 50
   32 x--> 52
-  32 --- 69
-  32 --- 86
+  32 --- 70
+  32 --- 87
   33 --- 51
   33 x--> 52
-  33 --- 59
-  33 --- 76
+  33 --- 68
+  33 --- 85
   34 --- 35
   34 --- 36
   34 --- 37
@@ -296,57 +296,57 @@ flowchart LR
   34 --- 85
   34 --- 86
   34 --- 87
-  35 --- 58
-  74 <--x 35
-  35 --- 75
-  36 --- 66
-  82 <--x 36
-  36 --- 83
-  37 --- 60
-  76 <--x 37
-  37 --- 77
+  35 --- 67
+  83 <--x 35
+  35 --- 84
+  36 --- 65
+  81 <--x 36
+  36 --- 82
+  37 --- 55
+  71 <--x 37
+  37 --- 72
   38 --- 61
   77 <--x 38
   38 --- 78
-  39 --- 67
-  83 <--x 39
-  39 --- 84
+  39 --- 69
+  85 <--x 39
+  39 --- 86
   40 --- 63
   79 <--x 40
   40 --- 80
-  41 --- 56
-  72 <--x 41
-  41 --- 73
+  41 --- 60
+  76 <--x 41
+  41 --- 77
   42 --- 54
   42 --- 71
   87 <--x 42
-  43 --- 70
-  86 <--x 43
-  43 --- 87
-  44 --- 68
-  84 <--x 44
-  44 --- 85
-  45 --- 65
-  81 <--x 45
-  45 --- 82
-  46 --- 62
-  78 <--x 46
-  46 --- 79
-  47 --- 57
-  73 <--x 47
-  47 --- 74
-  48 --- 55
-  71 <--x 48
-  48 --- 72
-  49 --- 64
-  80 <--x 49
-  49 --- 81
-  50 --- 69
-  85 <--x 50
-  50 --- 86
-  51 --- 59
-  75 <--x 51
-  51 --- 76
+  43 --- 66
+  82 <--x 43
+  43 --- 83
+  44 --- 57
+  73 <--x 44
+  44 --- 74
+  45 --- 64
+  80 <--x 45
+  45 --- 81
+  46 --- 58
+  74 <--x 46
+  46 --- 75
+  47 --- 59
+  75 <--x 47
+  47 --- 76
+  48 --- 56
+  72 <--x 48
+  48 --- 73
+  49 --- 62
+  78 <--x 49
+  49 --- 79
+  50 --- 70
+  86 <--x 50
+  50 --- 87
+  51 --- 68
+  84 <--x 51
+  51 --- 85
   54 <--x 53
   55 <--x 53
   56 <--x 53

rust/kcl-lib/tests/kcl_samples/pipe-flange-assembly/ast.snap

@@ -59,23 +59,14 @@ description: Result of parsing pipe-flange-assembly.kcl
           "filename": "68095k348-flange.kcl"
         },
         "selector": {
-          "type": "List",
-          "items": [
-            {
-              "alias": null,
-              "commentStart": 0,
-              "end": 0,
-              "name": {
+          "type": "None",
+          "alias": {
             "commentStart": 0,
             "end": 0,
             "name": "flange",
             "start": 0,
             "type": "Identifier"
-              },
-              "start": 0,
-              "type": "ImportItem"
           }
-          ]
         },
         "start": 0,
         "type": "ImportStatement",
@@ -89,23 +80,14 @@ description: Result of parsing pipe-flange-assembly.kcl
           "filename": "98017a257-washer.kcl"
         },
         "selector": {
-          "type": "List",
-          "items": [
-            {
-              "alias": null,
-              "commentStart": 0,
-              "end": 0,
-              "name": {
+          "type": "None",
+          "alias": {
             "commentStart": 0,
             "end": 0,
             "name": "washer",
             "start": 0,
             "type": "Identifier"
-              },
-              "start": 0,
-              "type": "ImportItem"
           }
-          ]
         },
         "start": 0,
         "type": "ImportStatement",
@@ -119,23 +101,14 @@ description: Result of parsing pipe-flange-assembly.kcl
           "filename": "91251a404-bolt.kcl"
         },
         "selector": {
-          "type": "List",
-          "items": [
-            {
-              "alias": null,
-              "commentStart": 0,
-              "end": 0,
-              "name": {
+          "type": "None",
+          "alias": {
             "commentStart": 0,
             "end": 0,
             "name": "bolt",
             "start": 0,
             "type": "Identifier"
-              },
-              "start": 0,
-              "type": "ImportItem"
           }
-          ]
         },
         "start": 0,
         "type": "ImportStatement",
@@ -149,23 +122,14 @@ description: Result of parsing pipe-flange-assembly.kcl
           "filename": "95479a127-hex-nut.kcl"
         },
         "selector": {
-          "type": "List",
-          "items": [
-            {
-              "alias": null,
-              "commentStart": 0,
-              "end": 0,
-              "name": {
+          "type": "None",
+          "alias": {
             "commentStart": 0,
             "end": 0,
             "name": "hexNut",
             "start": 0,
             "type": "Identifier"
-              },
-              "start": 0,
-              "type": "ImportItem"
           }
-          ]
         },
         "start": 0,
         "type": "ImportStatement",
@@ -179,91 +143,24 @@ description: Result of parsing pipe-flange-assembly.kcl
           "filename": "1120t74-pipe.kcl"
         },
         "selector": {
-          "type": "List",
-          "items": [
-            {
-              "alias": null,
-              "commentStart": 0,
-              "end": 0,
-              "name": {
+          "type": "None",
+          "alias": {
             "commentStart": 0,
             "end": 0,
             "name": "pipe",
             "start": 0,
             "type": "Identifier"
-              },
-              "start": 0,
-              "type": "ImportItem"
           }
-          ]
         },
         "start": 0,
         "type": "ImportStatement",
         "type": "ImportStatement"
       },
-      {
-        "commentStart": 0,
-        "end": 0,
-        "expression": {
-          "callee": {
-            "abs_path": false,
-            "commentStart": 0,
-            "end": 0,
-            "name": {
-              "commentStart": 0,
-              "end": 0,
-              "name": "flange",
-              "start": 0,
-              "type": "Identifier"
-            },
-            "path": [],
-            "start": 0,
-            "type": "Name"
-          },
-          "commentStart": 0,
-          "end": 0,
-          "start": 0,
-          "type": "CallExpressionKw",
-          "type": "CallExpressionKw",
-          "unlabeled": null
-        },
-        "preComments": [
-          "",
-          "",
-          "// Place flanges"
-        ],
-        "start": 0,
-        "type": "ExpressionStatement",
-        "type": "ExpressionStatement"
-      },
       {
         "commentStart": 0,
         "end": 0,
         "expression": {
           "body": [
-            {
-              "callee": {
-                "abs_path": false,
-                "commentStart": 0,
-                "end": 0,
-                "name": {
-                  "commentStart": 0,
-                  "end": 0,
-                  "name": "flange",
-                  "start": 0,
-                  "type": "Identifier"
-                },
-                "path": [],
-                "start": 0,
-                "type": "Name"
-              },
-              "commentStart": 0,
-              "end": 0,
-              "start": 0,
-              "type": "CallExpressionKw",
-              "type": "CallExpressionKw",
-              "unlabeled": null
-            },
             {
               "arguments": [
                 {
@@ -271,62 +168,7 @@ description: Result of parsing pipe-flange-assembly.kcl
                   "label": {
                     "commentStart": 0,
                     "end": 0,
-                    "name": "axis",
-                    "start": 0,
-                    "type": "Identifier"
-                  },
-                  "arg": {
-                    "commentStart": 0,
-                    "elements": [
-                      {
-                        "commentStart": 0,
-                        "end": 0,
-                        "raw": "0",
-                        "start": 0,
-                        "type": "Literal",
-                        "type": "Literal",
-                        "value": {
-                          "value": 0.0,
-                          "suffix": "None"
-                        }
-                      },
-                      {
-                        "commentStart": 0,
-                        "end": 0,
-                        "raw": "1",
-                        "start": 0,
-                        "type": "Literal",
-                        "type": "Literal",
-                        "value": {
-                          "value": 1.0,
-                          "suffix": "None"
-                        }
-                      },
-                      {
-                        "commentStart": 0,
-                        "end": 0,
-                        "raw": "0",
-                        "start": 0,
-                        "type": "Literal",
-                        "type": "Literal",
-                        "value": {
-                          "value": 0.0,
-                          "suffix": "None"
-                        }
-                      }
-                    ],
-                    "end": 0,
-                    "start": 0,
-                    "type": "ArrayExpression",
-                    "type": "ArrayExpression"
-                  }
-                },
-                {
-                  "type": "LabeledArg",
-                  "label": {
-                    "commentStart": 0,
-                    "end": 0,
-                    "name": "angle",
+                    "name": "roll",
                     "start": 0,
                     "type": "Identifier"
                   },
@@ -342,6 +184,50 @@ description: Result of parsing pipe-flange-assembly.kcl
                       "suffix": "None"
                     }
                   }
+                },
+                {
+                  "type": "LabeledArg",
+                  "label": {
+                    "commentStart": 0,
+                    "end": 0,
+                    "name": "pitch",
+                    "start": 0,
+                    "type": "Identifier"
+                  },
+                  "arg": {
+                    "commentStart": 0,
+                    "end": 0,
+                    "raw": "0",
+                    "start": 0,
+                    "type": "Literal",
+                    "type": "Literal",
+                    "value": {
+                      "value": 0.0,
+                      "suffix": "None"
+                    }
+                  }
+                },
+                {
+                  "type": "LabeledArg",
+                  "label": {
+                    "commentStart": 0,
+                    "end": 0,
+                    "name": "yaw",
+                    "start": 0,
+                    "type": "Identifier"
+                  },
+                  "arg": {
+                    "commentStart": 0,
+                    "end": 0,
+                    "raw": "0",
+                    "start": 0,
+                    "type": "Literal",
+                    "type": "Literal",
+                    "value": {
+                      "value": 0.0,
+                      "suffix": "None"
+                    }
+                  }
                 }
               ],
               "callee": {
@@ -364,7 +250,44 @@ description: Result of parsing pipe-flange-assembly.kcl
               "start": 0,
               "type": "CallExpressionKw",
               "type": "CallExpressionKw",
-              "unlabeled": null
+              "unlabeled": {
+                "callee": {
+                  "abs_path": false,
+                  "commentStart": 0,
+                  "end": 0,
+                  "name": {
+                    "commentStart": 0,
+                    "end": 0,
+                    "name": "clone",
+                    "start": 0,
+                    "type": "Identifier"
+                  },
+                  "path": [],
+                  "start": 0,
+                  "type": "Name"
+                },
+                "commentStart": 0,
+                "end": 0,
+                "start": 0,
+                "type": "CallExpressionKw",
+                "type": "CallExpressionKw",
+                "unlabeled": {
+                  "abs_path": false,
+                  "commentStart": 0,
+                  "end": 0,
+                  "name": {
+                    "commentStart": 0,
+                    "end": 0,
+                    "name": "flange",
+                    "start": 0,
+                    "type": "Identifier"
+                  },
+                  "path": [],
+                  "start": 0,
+                  "type": "Name",
+                  "type": "Name"
+                }
+              }
             },
             {
               "arguments": [
@@ -510,7 +433,7 @@ description: Result of parsing pipe-flange-assembly.kcl
           "end": 0,
           "nonCodeMeta": {
             "nonCodeNodes": {
-              "2": [
+              "1": [
                 {
                   "commentStart": 0,
                   "end": 0,
@@ -530,6 +453,11 @@ description: Result of parsing pipe-flange-assembly.kcl
           "type": "PipeExpression",
           "type": "PipeExpression"
         },
+        "preComments": [
+          "",
+          "",
+          "// Place flange clone"
+        ],
         "start": 0,
         "type": "ExpressionStatement",
         "type": "ExpressionStatement"
@@ -717,7 +645,6 @@ description: Result of parsing pipe-flange-assembly.kcl
         "expression": {
           "body": [
             {
-              "callee": {
               "abs_path": false,
               "commentStart": 0,
               "end": 0,
@@ -730,15 +657,9 @@ description: Result of parsing pipe-flange-assembly.kcl
               },
               "path": [],
               "start": 0,
+              "type": "Name",
               "type": "Name"
             },
-              "commentStart": 0,
-              "end": 0,
-              "start": 0,
-              "type": "CallExpressionKw",
-              "type": "CallExpressionKw",
-              "unlabeled": null
-            },
             {
               "arguments": [
                 {
@@ -1351,7 +1272,6 @@ description: Result of parsing pipe-flange-assembly.kcl
         "expression": {
           "body": [
             {
-              "callee": {
               "abs_path": false,
               "commentStart": 0,
               "end": 0,
@@ -1364,15 +1284,9 @@ description: Result of parsing pipe-flange-assembly.kcl
               },
               "path": [],
               "start": 0,
+              "type": "Name",
               "type": "Name"
             },
-              "commentStart": 0,
-              "end": 0,
-              "start": 0,
-              "type": "CallExpressionKw",
-              "type": "CallExpressionKw",
-              "unlabeled": null
-            },
             {
               "arguments": [
                 {
@@ -1846,7 +1760,6 @@ description: Result of parsing pipe-flange-assembly.kcl
         "expression": {
           "body": [
             {
-              "callee": {
               "abs_path": false,
               "commentStart": 0,
               "end": 0,
@@ -1859,15 +1772,9 @@ description: Result of parsing pipe-flange-assembly.kcl
               },
               "path": [],
               "start": 0,
+              "type": "Name",
               "type": "Name"
             },
-              "commentStart": 0,
-              "end": 0,
-              "start": 0,
-              "type": "CallExpressionKw",
-              "type": "CallExpressionKw",
-              "unlabeled": null
-            },
             {
               "arguments": [
                 {
@@ -2349,29 +2256,6 @@ description: Result of parsing pipe-flange-assembly.kcl
         "end": 0,
         "expression": {
           "body": [
-            {
-              "callee": {
-                "abs_path": false,
-                "commentStart": 0,
-                "end": 0,
-                "name": {
-                  "commentStart": 0,
-                  "end": 0,
-                  "name": "pipe",
-                  "start": 0,
-                  "type": "Identifier"
-                },
-                "path": [],
-                "start": 0,
-                "type": "Name"
-              },
-              "commentStart": 0,
-              "end": 0,
-              "start": 0,
-              "type": "CallExpressionKw",
-              "type": "CallExpressionKw",
-              "unlabeled": null
-            },
             {
               "arguments": [
                 {
@@ -2470,11 +2354,20 @@ description: Result of parsing pipe-flange-assembly.kcl
               "type": "CallExpressionKw",
               "type": "CallExpressionKw",
               "unlabeled": {
+                "abs_path": false,
                 "commentStart": 0,
                 "end": 0,
+                "name": {
+                  "commentStart": 0,
+                  "end": 0,
+                  "name": "pipe",
                   "start": 0,
-                "type": "PipeSubstitution",
-                "type": "PipeSubstitution"
+                  "type": "Identifier"
+                },
+                "path": [],
+                "start": 0,
+                "type": "Name",
+                "type": "Name"
               }
             },
             {
@@ -2657,29 +2550,6 @@ description: Result of parsing pipe-flange-assembly.kcl
         "end": 0,
         "expression": {
           "body": [
-            {
-              "callee": {
-                "abs_path": false,
-                "commentStart": 0,
-                "end": 0,
-                "name": {
-                  "commentStart": 0,
-                  "end": 0,
-                  "name": "pipe",
-                  "start": 0,
-                  "type": "Identifier"
-                },
-                "path": [],
-                "start": 0,
-                "type": "Name"
-              },
-              "commentStart": 0,
-              "end": 0,
-              "start": 0,
-              "type": "CallExpressionKw",
-              "type": "CallExpressionKw",
-              "unlabeled": null
-            },
             {
               "arguments": [
                 {
@@ -2694,12 +2564,12 @@ description: Result of parsing pipe-flange-assembly.kcl
                   "arg": {
                     "commentStart": 0,
                     "end": 0,
-                    "raw": "90",
+                    "raw": "180",
                     "start": 0,
                     "type": "Literal",
                     "type": "Literal",
                     "value": {
-                      "value": 90.0,
+                      "value": 180.0,
                       "suffix": "None"
                     }
                   }
@@ -2770,11 +2640,42 @@ description: Result of parsing pipe-flange-assembly.kcl
               "type": "CallExpressionKw",
               "type": "CallExpressionKw",
               "unlabeled": {
+                "callee": {
+                  "abs_path": false,
+                  "commentStart": 0,
+                  "end": 0,
+                  "name": {
+                    "commentStart": 0,
+                    "end": 0,
+                    "name": "clone",
+                    "start": 0,
+                    "type": "Identifier"
+                  },
+                  "path": [],
+                  "start": 0,
+                  "type": "Name"
+                },
                 "commentStart": 0,
                 "end": 0,
                 "start": 0,
-                "type": "PipeSubstitution",
-                "type": "PipeSubstitution"
+                "type": "CallExpressionKw",
+                "type": "CallExpressionKw",
+                "unlabeled": {
+                  "abs_path": false,
+                  "commentStart": 0,
+                  "end": 0,
+                  "name": {
+                    "commentStart": 0,
+                    "end": 0,
+                    "name": "pipe",
+                    "start": 0,
+                    "type": "Identifier"
+                  },
+                  "path": [],
+                  "start": 0,
+                  "type": "Name",
+                  "type": "Name"
+                }
               }
             },
             {
@@ -3009,13 +2910,7 @@ description: Result of parsing pipe-flange-assembly.kcl
               "start": 0,
               "type": "CallExpressionKw",
               "type": "CallExpressionKw",
-              "unlabeled": {
-                "commentStart": 0,
-                "end": 0,
-                "start": 0,
-                "type": "PipeSubstitution",
-                "type": "PipeSubstitution"
-              }
+              "unlabeled": null
             }
           ],
           "commentStart": 0,
@@ -3111,7 +3006,7 @@ description: Result of parsing pipe-flange-assembly.kcl
     ],
     "nonCodeMeta": {
       "nonCodeNodes": {
-        "13": [
+        "9": [
           {
             "commentStart": 0,
             "end": 0,

rust/kcl-lib/tests/kcl_samples/pipe-flange-assembly/program_memory.snap

@@ -3,13 +3,29 @@ source: kcl-lib/src/simulation_tests.rs
 description: Variables in memory after executing pipe-flange-assembly.kcl
 ---
 {
+  "__mod_bolt": {
+    "type": "Module",
+    "value": 5
+  },
+  "__mod_flange": {
+    "type": "Module",
+    "value": 3
+  },
   "__mod_gasket": {
     "type": "Module",
     "value": 2
   },
-  "bolt": {
-    "type": "Function",
-    "value": null
+  "__mod_hexNut": {
+    "type": "Module",
+    "value": 6
+  },
+  "__mod_pipe": {
+    "type": "Module",
+    "value": 7
+  },
+  "__mod_washer": {
+    "type": "Module",
+    "value": 4
   },
   "boltDiameter": {
     "type": "Number",
@@ -107,10 +123,6 @@ description: Variables in memory after executing pipe-flange-assembly.kcl
     "type": "TagIdentifier",
     "value": "filletEdge"
   },
-  "flange": {
-    "type": "Function",
-    "value": null
-  },
   "flangeBackDiameter": {
     "type": "Number",
     "value": 3.62,
@@ -241,10 +253,6 @@ description: Variables in memory after executing pipe-flange-assembly.kcl
       }
     }
   },
-  "hexNut": {
-    "type": "Function",
-    "value": null
-  },
   "hexNutDiameter": {
     "type": "Number",
     "value": 0.625,
@@ -323,10 +331,6 @@ description: Variables in memory after executing pipe-flange-assembly.kcl
       }
     }
   },
-  "pipe": {
-    "type": "Function",
-    "value": null
-  },
   "pipeDiameter": {
     "type": "Number",
     "value": 2.44,
@@ -379,10 +383,6 @@ description: Variables in memory after executing pipe-flange-assembly.kcl
       }
     }
   },
-  "washer": {
-    "type": "Function",
-    "value": null
-  },
   "washerInnerDia": {
     "type": "Number",
     "value": 0.64,

rust/kcl-lib/tests/kcl_samples/shepherds-hook-bolt/artifact_graph_flowchart.snap.md

@@ -112,8 +112,8 @@ flowchart LR
   8 --- 20
   8 ---- 25
   12 <--x 32
-  12 --- 33
-  12 <--x 34
+  12 <--x 33
+  12 --- 34
   13 --- 31
   13 x--> 35
   13 --- 39

rust/kcl-lib/tests/kcl_samples/utility-sink/artifact_graph_flowchart.snap.md

@@ -889,7 +889,7 @@ flowchart LR
   99 --- 265
   99 --- 314
   106 --- 181
-  106 x--> 213
+  106 x--> 212
   106 --- 260
   106 --- 309
   126 --- 194
@@ -1227,7 +1227,7 @@ flowchart LR
   251 <--x 209
   252 <--x 209
   253 <--x 209
-  260 <--x 212
+  260 <--x 213
   261 <--x 214
   262 <--x 214
   263 <--x 214

src/App.tsx

@@ -114,6 +114,9 @@ export function App() {
     // by the Projects view.
     billingActor.send({ type: BillingTransition.Update, apiToken: authToken })
 
+    // Tell engineStream to wait for dependencies to start streaming.
+    engineStreamActor.send({ type: EngineStreamTransition.WaitForDependencies })
+
     // When leaving the modeling scene, cut the engine stream.
     return () => {
       // When leaving the modeling scene, cut the engine stream.

src/clientSideScene/sceneEntities.ts

@@ -1107,11 +1107,7 @@ export class SceneEntities {
             (lastSegment.type === 'TangentialArc' && segmentName !== 'line') ||
             segmentName === 'tangentialArc'
           ) {
-            if (snappedPoint[0] === 0 || snappedPoint[1] === 0) {
-              resolvedFunctionName = 'tangentialArcTo'
-            } else {
             resolvedFunctionName = 'tangentialArc'
-            }
           } else if (snappedToTangent) {
             // Generate tag for previous arc segment and use it for the angle of angledLine:
             //   |> tangentialArc(endAbsolute = [5, -10], tag = $arc001)
@@ -3588,7 +3584,8 @@ export class SceneEntities {
     })
 
     if (!resp) {
-      return Promise.reject('no response')
+      console.warn('No response')
+      return {} as Models['GetSketchModePlane_type']
     }
 
     if (isArray(resp)) {

src/components/EngineStream.tsx

@@ -1,4 +1,3 @@
-import { isPlaywright } from '@src/lib/isPlaywright'
 import { useAppState } from '@src/AppState'
 import { ClientSideScene } from '@src/clientSideScene/ClientSideSceneComp'
 import { ViewControlContextMenu } from '@src/components/ViewControlMenu'
@@ -52,8 +51,10 @@ export const EngineStream = (props: {
   const last = useRef<number>(Date.now())
 
   const [firstPlay, setFirstPlay] = useState(true)
-  const [isRestartRequestStarting, setIsRestartRequestStarting] =
-    useState(false)
+  const [goRestart, setGoRestart] = useState(false)
+  const [timeoutId, setTimeoutId] = useState<
+    ReturnType<typeof setTimeout> | undefined
+  >(undefined)
   const [attemptTimes, setAttemptTimes] = useState<[number, number]>([
     0,
     TIME_1_SECOND,
@@ -85,18 +86,21 @@ export const EngineStream = (props: {
   const streamIdleMode = settings.app.streamIdleMode.current
 
   useEffect(() => {
+    // Will cause a useEffect loop if not checked for.
+    if (engineStreamState.context.videoRef.current !== null) return
     engineStreamActor.send({
       type: EngineStreamTransition.SetVideoRef,
       videoRef: { current: videoRef.current },
     })
-  }, [videoRef.current])
+  }, [videoRef.current, engineStreamState])
 
   useEffect(() => {
+    if (engineStreamState.context.canvasRef.current !== null) return
     engineStreamActor.send({
       type: EngineStreamTransition.SetCanvasRef,
       canvasRef: { current: canvasRef.current },
     })
-  }, [canvasRef.current])
+  }, [canvasRef.current, engineStreamState])
 
   useEffect(() => {
     engineStreamActor.send({
@@ -131,24 +135,6 @@ export const EngineStream = (props: {
     })
   }
 
-  useEffect(() => {
-    // Only try to start the stream if we're stopped or think we're done
-    // waiting for dependencies.
-    if (
-      !(
-        engineStreamState.value === EngineStreamState.WaitingForDependencies ||
-        engineStreamState.value === EngineStreamState.Stopped
-      )
-    )
-      return
-
-    // Don't bother trying to connect if the auth token is empty.
-    // We have the checks in the machine but this can cause a hot loop.
-    if (!engineStreamState.context.authToken) return
-
-    startOrReconfigureEngine()
-  }, [engineStreamState, setAppState])
-
   // I would inline this but it needs to be a function for removeEventListener.
   const play = () => {
     engineStreamActor.send({
@@ -174,12 +160,13 @@ export const EngineStream = (props: {
     console.log('scene is ready, execute kcl')
     const kmp = kclManager.executeCode().catch(trap)
 
-    if (!firstPlay) return
-
-    setFirstPlay(false)
     // Reset the restart timeouts
     setAttemptTimes([0, TIME_1_SECOND])
 
+    console.log(firstPlay)
+    if (!firstPlay) return
+
+    setFirstPlay(false)
     console.log('firstPlay true, zoom to fit')
     kmp
       .then(async () => {
@@ -211,51 +198,76 @@ export const EngineStream = (props: {
     // We do a back-off restart, using a fibonacci sequence, since it
     // has a nice retry time curve (somewhat quick then exponential)
     const attemptRestartIfNecessary = () => {
-      if (isRestartRequestStarting) return
-      setIsRestartRequestStarting(true)
+      // Timeout already set.
+      if (timeoutId) return
+
+      setTimeoutId(
         setTimeout(() => {
           engineStreamState.context.videoRef.current?.pause()
           engineCommandManager.tearDown()
           startOrReconfigureEngine()
-        setFirstPlay(false)
-        setIsRestartRequestStarting(false)
+          setFirstPlay(true)
+
+          setTimeoutId(undefined)
+          setGoRestart(false)
         }, attemptTimes[0] + attemptTimes[1])
+      )
       setAttemptTimes([attemptTimes[1], attemptTimes[0] + attemptTimes[1]])
     }
 
-    // Poll that we're connected. If not, send a reset signal.
-    // Do not restart if we're in idle mode.
-    const connectionCheckIntervalId = setInterval(() => {
-      // SKIP DURING TESTS BECAUSE IT WILL MESS WITH REUSING THE
-      // ELECTRON INSTANCE.
-      if (isPlaywright()) {
+    const onOffline = () => {
+      if (
+        !(
+          EngineConnectionStateType.Disconnected ===
+            engineCommandManager.engineConnection?.state.type ||
+          EngineConnectionStateType.Disconnecting ===
+            engineCommandManager.engineConnection?.state.type
+        )
+      ) {
         return
       }
-
-      // Don't try try to restart if we're already connected!
-      const hasEngineConnectionInst = engineCommandManager.engineConnection
-      const isDisconnected =
-        engineCommandManager.engineConnection?.state.type ===
-        EngineConnectionStateType.Disconnected
-      const inIdleMode = engineStreamState.value === EngineStreamState.Paused
-      if ((hasEngineConnectionInst && !isDisconnected) || inIdleMode) return
-
+      engineStreamActor.send({ type: EngineStreamTransition.Stop })
       attemptRestartIfNecessary()
-    }, TIME_1_SECOND)
+    }
+
+    if (
+      !goRestart &&
+      engineStreamState.value === EngineStreamState.WaitingForDependencies
+    ) {
+      setGoRestart(true)
+    }
+
+    if (goRestart && !timeoutId) {
+      attemptRestartIfNecessary()
+    }
 
     engineCommandManager.addEventListener(
       EngineCommandManagerEvents.EngineRestartRequest,
       attemptRestartIfNecessary
     )
-    return () => {
-      clearInterval(connectionCheckIntervalId)
 
+    engineCommandManager.addEventListener(
+      EngineCommandManagerEvents.Offline,
+      onOffline
+    )
+
+    return () => {
       engineCommandManager.removeEventListener(
         EngineCommandManagerEvents.EngineRestartRequest,
         attemptRestartIfNecessary
       )
+      engineCommandManager.removeEventListener(
+        EngineCommandManagerEvents.Offline,
+        onOffline
+      )
     }
-  }, [engineStreamState, attemptTimes, isRestartRequestStarting])
+  }, [
+    engineStreamState,
+    attemptTimes,
+    goRestart,
+    timeoutId,
+    engineCommandManager.engineConnection?.state.type,
+  ])
 
   useEffect(() => {
     // If engineStreamMachine is already reconfiguring, bail.
@@ -269,7 +281,7 @@ export const EngineStream = (props: {
     const canvas = engineStreamState.context.canvasRef?.current
     if (!canvas) return
 
-    new ResizeObserver(() => {
+    const observer = new ResizeObserver(() => {
       // Prevents:
       // `Uncaught ResizeObserver loop completed with undelivered notifications`
       window.requestAnimationFrame(() => {
@@ -280,13 +292,19 @@ export const EngineStream = (props: {
         if (
           (Math.abs(video.width - window.innerWidth) > 4 ||
             Math.abs(video.height - window.innerHeight) > 4) &&
-          !engineStreamState.matches(EngineStreamState.WaitingToPlay)
+          engineStreamState.matches(EngineStreamState.Playing)
         ) {
           timeoutStart.current = Date.now()
           startOrReconfigureEngine()
         }
       })
-    }).observe(document.body)
+    })
+
+    observer.observe(document.body)
+
+    return () => {
+      observer.disconnect()
+    }
   }, [engineStreamState.value])
 
   /**
@@ -345,8 +363,21 @@ export const EngineStream = (props: {
         timeoutStart.current = null
       } else if (timeoutStart.current) {
         const elapsed = Date.now() - timeoutStart.current
-        if (elapsed >= IDLE_TIME_MS) {
+        // Don't pause if we're already disconnected.
+        if (
+          // It's unnecessary to once again setup an event listener for
+          // offline/online to capture this state, when this state already
+          // exists on the window.navigator object. In hindsight it makes
+          // me (lee) regret we set React state variables such as
+          // isInternetConnected in other files when we could check this
+          // object instead.
+          engineCommandManager.engineConnection?.state.type ===
+            EngineConnectionStateType.ConnectionEstablished &&
+          elapsed >= IDLE_TIME_MS &&
+          engineStreamState.value === EngineStreamState.Playing
+        ) {
           timeoutStart.current = null
+          console.log('PAUSING')
           engineStreamActor.send({ type: EngineStreamTransition.Pause })
         }
       }
@@ -357,7 +388,7 @@ export const EngineStream = (props: {
     return () => {
       window.cancelAnimationFrame(frameId)
     }
-  }, [modelingMachineState])
+  }, [modelingMachineState, engineStreamState.value])
 
   useEffect(() => {
     if (!streamIdleMode) return
@@ -370,9 +401,18 @@ export const EngineStream = (props: {
         return
       }
 
-      if (engineStreamState.value === EngineStreamState.Paused) {
-        startOrReconfigureEngine()
-      }
+      engineStreamActor.send({
+        type: EngineStreamTransition.Resume,
+        modelingMachineActorSend,
+        settings: settingsEngine,
+        setAppState,
+        onMediaStream(mediaStream: MediaStream) {
+          engineStreamActor.send({
+            type: EngineStreamTransition.SetMediaStream,
+            mediaStream,
+          })
+        },
+      })
 
       timeoutStart.current = Date.now()
     }
@@ -471,7 +511,11 @@ export const EngineStream = (props: {
     }
 
     sendSelectEventToEngine(e)
-      .then(({ entity_id }) => {
+      .then((result) => {
+        if (!result) {
+          return
+        }
+        const { entity_id } = result
         if (!entity_id) {
           // No entity selected. This is benign
           return

src/components/ModelingSidebar/ModelingPanes/FeatureTreePane.tsx

@@ -21,7 +21,6 @@ import {
   filterOperations,
   getOperationIcon,
   getOperationLabel,
-  getOperationVariableName,
   stdLibMap,
 } from '@src/lib/operations'
 import { editorManager, kclManager, rustContext } from '@src/lib/singletons'
@@ -237,7 +236,6 @@ const VisibilityToggle = (props: VisibilityToggleProps) => {
 const OperationItemWrapper = ({
   icon,
   name,
-  variableName,
   visibilityToggle,
   menuItems,
   errors,
@@ -248,7 +246,6 @@ const OperationItemWrapper = ({
 }: React.HTMLAttributes<HTMLButtonElement> & {
   icon: CustomIconName
   name: string
-  variableName?: string
   visibilityToggle?: VisibilityToggleProps
   customSuffix?: JSX.Element
   menuItems?: ComponentProps<typeof ContextMenu>['items']
@@ -267,15 +264,8 @@ const OperationItemWrapper = ({
         className={`reset flex-1 flex items-center gap-2 text-left text-base ${selectable ? 'border-transparent dark:border-transparent' : 'border-none cursor-default'} ${className}`}
       >
         <CustomIcon name={icon} className="w-5 h-5 block" />
-        <div className="flex items-baseline align-baseline">
-          <div className="mr-2">
-            {name}
-            {variableName && (
-              <span className="ml-2 opacity-50 text-[11px] font-semibold">
-                {variableName}
-              </span>
-            )}
-          </div>
+        <div className="flex items-baseline">
+          <div className="mr-2">{name}</div>
           {customSuffix && customSuffix}
         </div>
       </button>
@@ -300,11 +290,6 @@ const OperationItem = (props: {
 }) => {
   const kclContext = useKclContext()
   const name = getOperationLabel(props.item)
-
-  const variableName = useMemo(() => {
-    return getOperationVariableName(props.item, kclContext.ast)
-  }, [props.item, kclContext.ast])
-
   const errors = useMemo(() => {
     return kclContext.diagnostics.filter(
       (diag) =>
@@ -514,7 +499,6 @@ const OperationItem = (props: {
     <OperationItemWrapper
       icon={getOperationIcon(props.item)}
       name={name}
-      variableName={variableName}
       menuItems={menuItems}
       onClick={selectOperation}
       onDoubleClick={enterEditFlow}

src/hooks/useNetworkStatus.tsx

@@ -78,18 +78,19 @@ export function useNetworkStatus() {
   }, [hasIssues, internetConnected, ping])
 
   useEffect(() => {
-    const onlineCallback = () => {
-      setInternetConnected(true)
-    }
     const offlineCallback = () => {
       setInternetConnected(false)
       setSteps(structuredClone(initialConnectingTypeGroupState))
     }
-    window.addEventListener('online', onlineCallback)
-    window.addEventListener('offline', offlineCallback)
+    engineCommandManager.addEventListener(
+      EngineCommandManagerEvents.Offline,
+      offlineCallback
+    )
     return () => {
-      window.removeEventListener('online', onlineCallback)
-      window.removeEventListener('offline', offlineCallback)
+      engineCommandManager.removeEventListener(
+        EngineCommandManagerEvents.Offline,
+        offlineCallback
+      )
     }
   }, [])
 
@@ -139,6 +140,8 @@ export function useNetworkStatus() {
         if (
           engineConnectionState.type === EngineConnectionStateType.Connecting
         ) {
+          setInternetConnected(true)
+
           const groups = Object.values(nextSteps)
           for (let group of groups) {
             for (let step of group) {
@@ -168,6 +171,10 @@ export function useNetworkStatus() {
 
             if (engineConnectionState.value.type === DisconnectingType.Error) {
               setError(engineConnectionState.value.value)
+            } else if (
+              engineConnectionState.value.type === DisconnectingType.Quit
+            ) {
+              return structuredClone(initialConnectingTypeGroupState)
             }
           }
         }

src/lang/langHelpers.ts

@@ -24,7 +24,6 @@ export type ToolTip =
   | 'yLineTo'
   | 'angledLineThatIntersects'
   | 'tangentialArc'
-  | 'tangentialArcTo'
   | 'circle'
   | 'circleThreePoint'
   | 'arcTo'
@@ -45,7 +44,6 @@ export const toolTips: Array<ToolTip> = [
   'yLineTo',
   'angledLineThatIntersects',
   'tangentialArc',
-  'tangentialArcTo',
   'circleThreePoint',
   'arc',
   'arcTo',

src/lang/std/engineConnection.ts

@@ -1,4 +1,3 @@
-import { TEST } from '@src/env'
 import type { Models } from '@kittycad/lib'
 import { VITE_KC_API_WS_MODELING_URL, VITE_KC_DEV_TOKEN } from '@src/env'
 import { jsAppSettings } from '@src/lib/settings/settingsUtils'
@@ -83,6 +82,9 @@ export enum ConnectionError {
   TooManyConnections,
   Outage,
 
+  // Observed to happen on a local network outage.
+  PeerConnectionRemoteDisconnected,
+
   // An unknown error is the most severe because it has not been classified
   // or encountered before.
   Unknown,
@@ -107,6 +109,8 @@ export const CONNECTION_ERROR_TEXT: Record<ConnectionError, string> = {
     'There are too many open engine connections associated with your account.',
   [ConnectionError.Outage]:
     'We seem to be experiencing an outage. Please visit [status.zoo.dev](https://status.zoo.dev) for updates.',
+  [ConnectionError.PeerConnectionRemoteDisconnected]:
+    'The remote end has disconnected.',
   [ConnectionError.Unknown]:
     'An unexpected error occurred. Please report this to us.',
 }
@@ -226,6 +230,9 @@ export enum EngineConnectionEvents {
   Opened = 'opened', // (engineConnection: EngineConnection) => void
   Closed = 'closed', // (engineConnection: EngineConnection) => void
   NewTrack = 'new-track', // (track: NewTrackArgs) => void
+
+  // A general offline state.
+  Offline = 'offline',
 }
 
 function toRTCSessionDescriptionInit(
@@ -674,9 +681,20 @@ class EngineConnection extends EventTarget {
 
             // The remote end broke up with us! :(
             case 'disconnected':
+              this.state = {
+                type: EngineConnectionStateType.Disconnecting,
+                value: {
+                  type: DisconnectingType.Error,
+                  value: {
+                    error: ConnectionError.PeerConnectionRemoteDisconnected,
+                    context: event,
+                  },
+                },
+              }
               this.dispatchEvent(
-                new CustomEvent(EngineConnectionEvents.RestartRequest, {})
+                new CustomEvent(EngineConnectionEvents.Offline, {})
               )
+              this.disconnectAll()
               break
             case 'closed':
               this.pc?.removeEventListener('icecandidate', this.onIceCandidate)
@@ -847,7 +865,6 @@ class EngineConnection extends EventTarget {
               'message',
               this.onDataChannelMessage
             )
-            this.disconnectAll()
           }
 
           this.unreliableDataChannel?.addEventListener(
@@ -866,7 +883,6 @@ class EngineConnection extends EventTarget {
                 },
               },
             }
-            this.disconnectAll()
           }
           this.unreliableDataChannel?.addEventListener(
             'error',
@@ -956,6 +972,9 @@ class EngineConnection extends EventTarget {
             this.onNetworkStatusReady
           )
 
+          this.dispatchEvent(
+            new CustomEvent(EngineConnectionEvents.Offline, {})
+          )
           this.disconnectAll()
         }
         this.websocket.addEventListener('close', this.onWebSocketClose)
@@ -974,8 +993,6 @@ class EngineConnection extends EventTarget {
               },
             }
           }
-
-          this.disconnectAll()
         }
         this.websocket.addEventListener('error', this.onWebSocketError)
 
@@ -1331,6 +1348,9 @@ export enum EngineCommandManagerEvents {
 
   // the whole scene is ready (settings loaded)
   SceneReady = 'scene-ready',
+
+  // we're offline
+  Offline = 'offline',
 }
 
 /**
@@ -1380,6 +1400,7 @@ export class EngineCommandManager extends EventTarget {
    * This is compared to the {@link outSequence} number to determine if we should ignore
    * any out-of-order late responses in the unreliable channel.
    */
+  keepForcefulOffline = false
   inSequence = 1
   engineConnection?: EngineConnection
   commandLogs: CommandLog[] = []
@@ -1453,13 +1474,8 @@ export class EngineCommandManager extends EventTarget {
     )
   }
 
-  private onOffline = () => {
-    console.log('Browser reported network is offline')
-    if (TEST) {
-      console.warn('DURING TESTS ENGINECONNECTION.ONOFFLINE WILL DO NOTHING.')
-      return
-    }
-    this.onEngineConnectionRestartRequest()
+  private onEngineOffline = () => {
+    this.dispatchEvent(new CustomEvent(EngineCommandManagerEvents.Offline, {}))
   }
 
   idleMode: boolean = false
@@ -1494,6 +1510,11 @@ export class EngineCommandManager extends EventTarget {
     if (settings) {
       this.settings = settings
     }
+
+    if (this.keepForcefulOffline) {
+      return
+    }
+
     if (width === 0 || height === 0) {
       return
     }
@@ -1509,8 +1530,6 @@ export class EngineCommandManager extends EventTarget {
       return
     }
 
-    window.addEventListener('offline', this.onOffline)
-
     let additionalSettings = this.settings.enableSSAO ? '&post_effect=ssao' : ''
     additionalSettings +=
       '&show_grid=' + (this.settings.showScaleGrid ? 'true' : 'false')
@@ -1537,6 +1556,11 @@ export class EngineCommandManager extends EventTarget {
       this.onEngineConnectionRestartRequest as EventListener
     )
 
+    this.engineConnection.addEventListener(
+      EngineConnectionEvents.Offline,
+      this.onEngineOffline as EventListener
+    )
+
     // eslint-disable-next-line @typescript-eslint/no-misused-promises
     this.onEngineConnectionOpened = async () => {
       console.log('onEngineConnectionOpened')
@@ -1552,9 +1576,9 @@ export class EngineCommandManager extends EventTarget {
         // Let's restart.
         console.warn("shit's gone south")
         console.warn(e)
-        this.engineConnection?.dispatchEvent(
-          new CustomEvent(EngineConnectionEvents.RestartRequest, {})
-        )
+        // this.engineConnection?.dispatchEvent(
+        //   new CustomEvent(EngineConnectionEvents.RestartRequest, {})
+        // )
         return
       }
 
@@ -1597,23 +1621,7 @@ export class EngineCommandManager extends EventTarget {
       console.log('camControlsCameraChange')
       this._camControlsCameraChange()
 
-      // We should eventually only have 1 restoral call.
-      if (this.idleMode) {
       await this.sceneInfra?.camControls.restoreRemoteCameraStateAndTriggerSync()
-      } else {
-        // NOTE: This code is old. It uses the old hack to restore camera.
-        console.log('call default_camera_get_settings')
-        // eslint-disable-next-line @typescript-eslint/no-floating-promises
-        await this.sendSceneCommand({
-          // CameraControls subscribes to default_camera_get_settings response events
-          // firing this at connection ensure the camera's are synced initially
-          type: 'modeling_cmd_req',
-          cmd_id: uuidv4(),
-          cmd: {
-            type: 'default_camera_get_settings',
-          },
-        })
-      }
 
       setIsStreamReady(true)
 
@@ -1877,8 +1885,6 @@ export class EngineCommandManager extends EventTarget {
   tearDown(opts?: { idleMode: boolean }) {
     this.idleMode = opts?.idleMode ?? false
 
-    window.removeEventListener('offline', this.onOffline)
-
     if (this.engineConnection) {
       for (const [cmdId, pending] of Object.entries(this.pendingCommands)) {
         pending.reject([
@@ -1928,7 +1934,26 @@ export class EngineCommandManager extends EventTarget {
       this.engineCommandManager.engineConnection = null
     }
     this.engineConnection = undefined
+
+    // It is possible all connections never even started, but we still want
+    // to signal to the whole application we are "offline".
+    this.dispatchEvent(new CustomEvent(EngineCommandManagerEvents.Offline, {}))
   }
+
+  offline() {
+    this.keepForcefulOffline = true
+    this.tearDown()
+    console.log('offline')
+  }
+
+  online() {
+    this.keepForcefulOffline = false
+    this.dispatchEvent(
+      new CustomEvent(EngineCommandManagerEvents.EngineRestartRequest, {})
+    )
+    console.log('online')
+  }
+
   async startNewSession() {
     this.responseMap = {}
   }

src/lang/std/sketch.ts

@@ -1018,61 +1018,217 @@ export const yLine: SketchLineHelperKw = {
 
 export const tangentialArc: SketchLineHelperKw = {
   add: ({ node, pathToNode, segmentInput, replaceExistingCallback }) => {
-    return tangentialArcHelpers.add({
-      node,
+    if (segmentInput.type !== 'straight-segment') return STRAIGHT_SEGMENT_ERR()
+    const { to } = segmentInput
+    const _node = { ...node }
+    const getNode = getNodeFromPathCurry(_node, pathToNode)
+    const _node1 = getNode<PipeExpression | CallExpressionKw>('PipeExpression')
+    if (err(_node1)) return _node1
+    const { node: pipe } = _node1
+    const _node2 = getNodeFromPath<VariableDeclarator>(
+      _node,
       pathToNode,
-      segmentInput,
-      replaceExistingCallback,
-      isAbsolute: false,
-    })
-  },
-  updateArgs: ({ node, pathToNode, input }) => {
-    return tangentialArcHelpers.update({
-      node,
-      pathToNode,
-      input,
-      isAbsolute: false,
-    })
-  },
-  getTag: getTagKwArg(),
-  addTag: addTagKw(),
-  getConstraintInfo: (callExp: CallExpressionKw, code, pathToNode) => {
-    return tangentialArcHelpers.getConstraintInfo({
-      callExp,
-      code,
-      pathToNode,
-      isAbsolute: false,
-    })
-  },
-}
+      'VariableDeclarator'
+    )
+    if (err(_node2)) return _node2
+    const { node: varDec } = _node2
 
-export const tangentialArcTo: SketchLineHelperKw = {
-  add: ({ node, pathToNode, segmentInput, replaceExistingCallback }) => {
-    return tangentialArcHelpers.add({
-      node,
+    const toX = createLiteral(roundOff(to[0], 2))
+    const toY = createLiteral(roundOff(to[1], 2))
+
+    if (replaceExistingCallback && pipe.type !== 'CallExpressionKw') {
+      const { index: callIndex } = splitPathAtPipeExpression(pathToNode)
+      const result = replaceExistingCallback([
+        {
+          type: 'labeledArgArrayItem',
+          key: ARG_END_ABSOLUTE,
+          index: 0,
+          argType: 'xAbsolute',
+          expr: toX,
+        },
+        {
+          type: 'labeledArgArrayItem',
+          key: ARG_END_ABSOLUTE,
+          index: 1,
+          argType: 'yAbsolute',
+          expr: toY,
+        },
+      ])
+      if (err(result)) return result
+      const { callExp, valueUsedInTransform } = result
+      pipe.body[callIndex] = callExp
+      return {
+        modifiedAst: _node,
         pathToNode,
-      segmentInput,
-      replaceExistingCallback,
-      isAbsolute: true,
-    })
+        valueUsedInTransform,
+      }
+    }
+    const newLine = createCallExpressionStdLibKw(
+      'tangentialArc',
+      null, // Assumes this is being called in a pipeline, so the first arg is optional and if not given, will become pipeline substitution.
+      [createLabeledArg(ARG_END_ABSOLUTE, createArrayExpression([toX, toY]))]
+    )
+    if (pipe.type === 'PipeExpression') {
+      pipe.body = [...pipe.body, newLine]
+      return {
+        modifiedAst: _node,
+        pathToNode: [
+          ...pathToNode.slice(
+            0,
+            pathToNode.findIndex(([_, type]) => type === 'PipeExpression') + 1
+          ),
+          ['body', 'PipeExpression'],
+          [pipe.body.length - 1, 'CallExpressionKw'],
+        ],
+      }
+    } else {
+      varDec.init = createPipeExpression([varDec.init, newLine])
+    }
+    return {
+      modifiedAst: _node,
+      pathToNode,
+    }
   },
   updateArgs: ({ node, pathToNode, input }) => {
-    return tangentialArcHelpers.update({
-      node,
+    if (input.type !== 'straight-segment') return STRAIGHT_SEGMENT_ERR()
+    const { to } = input
+    const _node = { ...node }
+    const nodeMeta = getNodeFromPath<CallExpressionKw>(_node, pathToNode)
+    if (err(nodeMeta)) return nodeMeta
+    const { node: callExpression } = nodeMeta
+
+    if (callExpression.type !== 'CallExpressionKw') {
+      return new Error(
+        `Expected CallExpressionKw, but found ${callExpression.type}`
+      )
+    }
+
+    for (const arg of callExpression.arguments) {
+      if (arg.label?.name !== ARG_END_ABSOLUTE && arg.label?.name !== ARG_TAG) {
+        console.debug(
+          'Trying to edit unsupported tangentialArc keyword arguments; skipping'
+        )
+        return {
+          modifiedAst: _node,
           pathToNode,
-      input,
-      isAbsolute: true,
-    })
+        }
+      }
+    }
+
+    const toArrExp = createArrayExpression([
+      createLiteral(roundOff(to[0], 2)),
+      createLiteral(roundOff(to[1], 2)),
+    ])
+
+    mutateKwArg(ARG_END_ABSOLUTE, callExpression, toArrExp)
+    return {
+      modifiedAst: _node,
+      pathToNode,
+    }
   },
   getTag: getTagKwArg(),
   addTag: addTagKw(),
   getConstraintInfo: (callExp: CallExpressionKw, code, pathToNode) => {
-    return tangentialArcHelpers.getConstraintInfo({
-      callExp,
-      code,
-      pathToNode,
-      isAbsolute: true,
+    if (callExp.type !== 'CallExpressionKw') return []
+    if (callExp.callee.name.name !== 'tangentialArc') return []
+    const callee = callExp.callee
+    const pathToCallee: PathToNode = [
+      ...pathToNode,
+      ['callee', 'CallExpressionKw'],
+    ]
+    const endAbsoluteArg = findKwArgWithIndex(ARG_END_ABSOLUTE, callExp)
+
+    const constraints: ConstrainInfo[] = [
+      constrainInfo(
+        'tangentialWithPrevious',
+        true,
+        callee.name.name,
+        'tangentialArc',
+        undefined,
+        topLevelRange(callee.start, callee.end),
+        pathToCallee
+      ),
+    ]
+    if (endAbsoluteArg) {
+      const { expr, argIndex } = endAbsoluteArg
+      const pathToArgs: PathToNode = [
+        ...pathToNode,
+        ['arguments', 'CallExpressionKw'],
+      ]
+      const pathToArg: PathToNode = [
+        ...pathToArgs,
+        [argIndex, ARG_INDEX_FIELD],
+        ['arg', LABELED_ARG_FIELD],
+      ]
+      if (expr.type !== 'ArrayExpression' || expr.elements.length < 2) {
+        constraints.push({
+          stdLibFnName: 'tangentialArc',
+          type: 'xAbsolute',
+          isConstrained: isNotLiteralArrayOrStatic(expr),
+          sourceRange: topLevelRange(expr.start, expr.end),
+          pathToNode: pathToArg,
+          value: code.slice(expr.start, expr.end),
+          argPosition: {
+            type: 'labeledArgArrayItem',
+            index: 0,
+            key: ARG_END_ABSOLUTE,
+          },
         })
+        constraints.push({
+          stdLibFnName: 'tangentialArc',
+          type: 'yAbsolute',
+          isConstrained: isNotLiteralArrayOrStatic(expr),
+          sourceRange: topLevelRange(expr.start, expr.end),
+          pathToNode: pathToArg,
+          value: code.slice(expr.start, expr.end),
+          argPosition: {
+            type: 'labeledArgArrayItem',
+            index: 1,
+            key: ARG_END_ABSOLUTE,
+          },
+        })
+        return constraints
+      }
+      const pathToX: PathToNode = [
+        ...pathToArg,
+        ['elements', 'ArrayExpression'],
+        [0, 'index'],
+      ]
+      const pathToY: PathToNode = [
+        ...pathToArg,
+        ['elements', 'ArrayExpression'],
+        [1, 'index'],
+      ]
+      const exprX = expr.elements[0]
+      const exprY = expr.elements[1]
+      constraints.push({
+        stdLibFnName: 'tangentialArc',
+        type: 'xAbsolute',
+        isConstrained: isNotLiteralArrayOrStatic(exprX),
+        sourceRange: topLevelRange(exprX.start, exprX.end),
+        pathToNode: pathToX,
+        value: code.slice(exprX.start, exprX.end),
+        argPosition: {
+          type: 'labeledArgArrayItem',
+          index: 0,
+          key: ARG_END_ABSOLUTE,
+        },
+      })
+      constraints.push({
+        stdLibFnName: 'tangentialArc',
+        type: 'yAbsolute',
+        isConstrained: isNotLiteralArrayOrStatic(exprY),
+        sourceRange: topLevelRange(exprY.start, exprY.end),
+        pathToNode: pathToY,
+        value: code.slice(exprY.start, exprY.end),
+        argPosition: {
+          type: 'labeledArgArrayItem',
+          index: 1,
+          key: ARG_END_ABSOLUTE,
+        },
+      })
+    }
+    return constraints
   },
 }
 
@@ -3155,7 +3311,6 @@ export const sketchLineHelperMapKw: { [key: string]: SketchLineHelperKw } = {
   angledLineToX,
   angledLineToY,
   tangentialArc,
-  tangentialArcTo,
   startProfile,
 } as const
 
@@ -3231,7 +3386,6 @@ export function fnNameToToolTipFromSegment(
   fnName: string
 ): ToolTip | Error {
   switch (fnName) {
-    case 'arcTo':
     case 'arc': {
       return seg.type === 'ArcThreePoint' ? 'arcTo' : 'arc'
     }
@@ -3249,7 +3403,6 @@ export function fnNameToToolTipFromSegment(
     case 'circleThreePoint':
     case 'circle':
     case 'tangentialArc':
-    case 'tangentialArcTo':
     case 'angledLine':
     case 'startProfile':
     case 'arcTo':
@@ -3273,7 +3426,8 @@ export function fnNameToTooltip(
   argLabels: string[],
   fnName: string
 ): ToolTip | Error {
-  const isAbsolute = argLabels.some((label) => label === ARG_END_ABSOLUTE)
+  const isAbsolute =
+    argLabels.findIndex((label) => label === ARG_END_ABSOLUTE) >= 0
   switch (fnName) {
     case 'arc': {
       const isArc = argLabels.some((label) =>
@@ -3287,11 +3441,10 @@ export function fnNameToTooltip(
       return isAbsolute ? 'xLineTo' : 'xLine'
     case 'yLine':
       return isAbsolute ? 'yLineTo' : 'yLine'
-    case 'tangentialArc':
-      return isAbsolute ? 'tangentialArcTo' : 'tangentialArc'
     case 'angledLineThatIntersects':
     case 'circleThreePoint':
     case 'circle':
+    case 'tangentialArc':
     case 'startProfile':
       return fnName
     case 'angledLine': {
@@ -3332,7 +3485,6 @@ export function tooltipToFnName(tooltip: ToolTip): string | Error {
     case 'xLine':
     case 'yLine':
     case 'line':
-    case 'tangentialArc':
       return tooltip
     case 'lineTo':
       return 'line'
@@ -3340,8 +3492,6 @@ export function tooltipToFnName(tooltip: ToolTip): string | Error {
       return 'xLine'
     case 'yLineTo':
       return 'yLine'
-    case 'tangentialArcTo':
-      return 'tangentialArc'
     case 'angledLine':
     case 'angledLineToX':
     case 'angledLineToY':
@@ -3949,6 +4099,7 @@ export function isAbsoluteLine(lineCall: CallExpressionKw): boolean | Error {
   const name = lineCall?.callee?.name.name
   switch (name) {
     case 'line':
+    case 'tangentialArc':
       if (findKwArg(ARG_END, lineCall) !== undefined) {
         return false
       }
@@ -3969,8 +4120,6 @@ export function isAbsoluteLine(lineCall: CallExpressionKw): boolean | Error {
       return new Error(
         `${name} call has neither ${ARG_END} nor ${ARG_END_ABSOLUTE} params`
       )
-    case 'tangentialArc':
-      return findKwArg(ARG_END_ABSOLUTE, lineCall) !== undefined
     case 'angledLineThatIntersects':
     case 'arc':
     case 'circle':
@@ -4002,7 +4151,6 @@ export function getArgForEnd(lineCall: CallExpressionKw):
   switch (name) {
     case 'circle':
       return getCircle(lineCall)
-    case 'tangentialArc':
     case 'line': {
       const arg = findKwArgAny(DETERMINING_ARGS, lineCall)
       if (arg === undefined) {
@@ -4059,264 +4207,3 @@ export function getArgForEnd(lineCall: CallExpressionKw):
 function removeDeterminingArgs(callExp: CallExpressionKw) {
   removeKwArgs(DETERMINING_ARGS, callExp)
 }
-
-const tangentialArcHelpers = {
-  add: ({
-    node,
-    pathToNode,
-    segmentInput,
-    replaceExistingCallback,
-    isAbsolute = false,
-  }: {
-    node: Node<Program>
-    pathToNode: PathToNode
-    segmentInput: SegmentInputs
-    replaceExistingCallback?: (
-      rawArgs: RawArgs
-    ) => CreatedSketchExprResult | Error
-    isAbsolute?: boolean
-  }) => {
-    if (segmentInput.type !== 'straight-segment') return STRAIGHT_SEGMENT_ERR()
-    const { to, from } = segmentInput
-    const _node = { ...node }
-    const getNode = getNodeFromPathCurry(_node, pathToNode)
-    const _node1 = getNode<PipeExpression | CallExpressionKw>('PipeExpression')
-    if (err(_node1)) return _node1
-    const { node: pipe } = _node1
-    const _node2 = getNodeFromPath<VariableDeclarator>(
-      _node,
-      pathToNode,
-      'VariableDeclarator'
-    )
-    if (err(_node2)) return _node2
-    const { node: varDec } = _node2
-
-    const toX = createLiteral(roundOff(isAbsolute ? to[0] : to[0] - from[0], 2))
-    const toY = createLiteral(roundOff(isAbsolute ? to[1] : to[1] - from[1], 2))
-
-    const argLabel = isAbsolute ? ARG_END_ABSOLUTE : ARG_END
-    const xArgType = isAbsolute ? 'xAbsolute' : 'xRelative'
-    const yArgType = isAbsolute ? 'yAbsolute' : 'yRelative'
-
-    if (replaceExistingCallback && pipe.type !== 'CallExpressionKw') {
-      const { index: callIndex } = splitPathAtPipeExpression(pathToNode)
-      const result = replaceExistingCallback([
-        {
-          type: 'labeledArgArrayItem',
-          key: argLabel,
-          index: 0,
-          argType: xArgType,
-          expr: toX,
-        },
-        {
-          type: 'labeledArgArrayItem',
-          key: argLabel,
-          index: 1,
-          argType: yArgType,
-          expr: toY,
-        },
-      ])
-      if (err(result)) return result
-      const { callExp, valueUsedInTransform } = result
-      pipe.body[callIndex] = callExp
-      return {
-        modifiedAst: _node,
-        pathToNode,
-        valueUsedInTransform,
-      }
-    }
-    const newLine = createCallExpressionStdLibKw(
-      'tangentialArc',
-      null, // Assumes this is being called in a pipeline, so the first arg is optional and if not given, will become pipeline substitution.
-      [createLabeledArg(argLabel, createArrayExpression([toX, toY]))]
-    )
-    if (pipe.type === 'PipeExpression') {
-      pipe.body = [...pipe.body, newLine]
-      return {
-        modifiedAst: _node,
-        pathToNode: [
-          ...pathToNode.slice(
-            0,
-            pathToNode.findIndex(([_, type]) => type === 'PipeExpression') + 1
-          ),
-          ['body', 'PipeExpression'],
-          [pipe.body.length - 1, 'CallExpressionKw'],
-        ] as PathToNode,
-      }
-    } else {
-      varDec.init = createPipeExpression([varDec.init, newLine])
-    }
-    return {
-      modifiedAst: _node,
-      pathToNode,
-    }
-  },
-  update: ({
-    node,
-    pathToNode,
-    input,
-    isAbsolute = false,
-  }: {
-    node: Node<Program>
-    pathToNode: PathToNode
-    input: SegmentInputs
-    isAbsolute?: boolean
-  }) => {
-    if (input.type !== 'straight-segment') return STRAIGHT_SEGMENT_ERR()
-    const { to, from } = input
-    const _node = { ...node }
-    const nodeMeta = getNodeFromPath<CallExpressionKw>(_node, pathToNode)
-    if (err(nodeMeta)) return nodeMeta
-    const { node: callExpression } = nodeMeta
-
-    if (callExpression.type !== 'CallExpressionKw') {
-      return new Error(
-        `Expected CallExpressionKw, but found ${callExpression.type}`
-      )
-    }
-
-    const argLabel = isAbsolute ? ARG_END_ABSOLUTE : ARG_END
-    const functionName = isAbsolute ? 'tangentialArcTo' : 'tangentialArc'
-
-    for (const arg of callExpression.arguments) {
-      if (arg.label?.name !== argLabel && arg.label?.name !== ARG_TAG) {
-        console.debug(
-          `Trying to edit unsupported ${functionName} keyword arguments; skipping`
-        )
-        return {
-          modifiedAst: _node,
-          pathToNode,
-        }
-      }
-    }
-
-    const toArrExp = createArrayExpression([
-      createLiteral(roundOff(isAbsolute ? to[0] : to[0] - from[0], 2)),
-      createLiteral(roundOff(isAbsolute ? to[1] : to[1] - from[1], 2)),
-    ])
-
-    mutateKwArg(argLabel, callExpression, toArrExp)
-    return {
-      modifiedAst: _node,
-      pathToNode,
-    }
-  },
-  getConstraintInfo: ({
-    callExp,
-    code,
-    pathToNode,
-    isAbsolute = false,
-  }: {
-    callExp: CallExpressionKw
-    code: string
-    pathToNode: PathToNode
-    isAbsolute?: boolean
-  }): ConstrainInfo[] => {
-    if (callExp.type !== 'CallExpressionKw') return []
-    if (callExp.callee.name.name !== 'tangentialArc') return []
-
-    const callee = callExp.callee
-    const pathToCallee: PathToNode = [
-      ...pathToNode,
-      ['callee', 'CallExpressionKw'],
-    ]
-
-    const argLabel = isAbsolute ? ARG_END_ABSOLUTE : ARG_END
-    const xConstraintType = isAbsolute ? 'xAbsolute' : 'xRelative'
-    const yConstraintType = isAbsolute ? 'yAbsolute' : 'yRelative'
-
-    const endArg = findKwArgWithIndex(argLabel, callExp)
-
-    const constraints: ConstrainInfo[] = [
-      constrainInfo(
-        'tangentialWithPrevious',
-        true,
-        callee.name.name,
-        'tangentialArc',
-        undefined,
-        topLevelRange(callee.start, callee.end),
-        pathToCallee
-      ),
-    ]
-    if (endArg) {
-      const { expr, argIndex } = endArg
-      const pathToArgs: PathToNode = [
-        ...pathToNode,
-        ['arguments', 'CallExpressionKw'],
-      ]
-      const pathToArg: PathToNode = [
-        ...pathToArgs,
-        [argIndex, ARG_INDEX_FIELD],
-        ['arg', LABELED_ARG_FIELD],
-      ]
-      if (expr.type !== 'ArrayExpression' || expr.elements.length < 2) {
-        constraints.push({
-          stdLibFnName: 'tangentialArc',
-          type: xConstraintType,
-          isConstrained: isNotLiteralArrayOrStatic(expr),
-          sourceRange: topLevelRange(expr.start, expr.end),
-          pathToNode: pathToArg,
-          value: code.slice(expr.start, expr.end),
-          argPosition: {
-            type: 'labeledArgArrayItem',
-            index: 0,
-            key: argLabel,
-          },
-        })
-        constraints.push({
-          stdLibFnName: 'tangentialArc',
-          type: yConstraintType,
-          isConstrained: isNotLiteralArrayOrStatic(expr),
-          sourceRange: topLevelRange(expr.start, expr.end),
-          pathToNode: pathToArg,
-          value: code.slice(expr.start, expr.end),
-          argPosition: {
-            type: 'labeledArgArrayItem',
-            index: 1,
-            key: argLabel,
-          },
-        })
-        return constraints
-      }
-      const pathToX: PathToNode = [
-        ...pathToArg,
-        ['elements', 'ArrayExpression'],
-        [0, 'index'],
-      ]
-      const pathToY: PathToNode = [
-        ...pathToArg,
-        ['elements', 'ArrayExpression'],
-        [1, 'index'],
-      ]
-      const exprX = expr.elements[0]
-      const exprY = expr.elements[1]
-      constraints.push({
-        stdLibFnName: 'tangentialArc',
-        type: xConstraintType,
-        isConstrained: isNotLiteralArrayOrStatic(exprX),
-        sourceRange: topLevelRange(exprX.start, exprX.end),
-        pathToNode: pathToX,
-        value: code.slice(exprX.start, exprX.end),
-        argPosition: {
-          type: 'labeledArgArrayItem',
-          index: 0,
-          key: argLabel,
-        },
-      })
-      constraints.push({
-        stdLibFnName: 'tangentialArc',
-        type: yConstraintType,
-        isConstrained: isNotLiteralArrayOrStatic(exprY),
-        sourceRange: topLevelRange(exprY.start, exprY.end),
-        pathToNode: pathToY,
-        value: code.slice(exprY.start, exprY.end),
-        argPosition: {
-          type: 'labeledArgArrayItem',
-          index: 1,
-          key: argLabel,
-        },
-      })
-    }
-    return constraints
-  },
-}

src/lang/std/sketchcombos.ts

@@ -1502,14 +1502,16 @@ export function removeSingleConstraint({
           const literal = rawArg?.overrideExpr ?? rawArg?.expr
           return (arg.index === inputToReplace.index && literal) || argExpr
         })
-
         // It's a kw call.
-        const isAbsolute = inputs.some((input) => input.argType === 'xAbsolute')
+        const isAbsolute = callExp.node.callee.name.name == 'lineTo'
+        if (isAbsolute) {
           const args = [
-          createLabeledArg(
-            isAbsolute ? ARG_END_ABSOLUTE : ARG_END,
-            createArrayExpression(values)
-          ),
+            createLabeledArg(ARG_END_ABSOLUTE, createArrayExpression(values)),
+          ]
+          return createStdlibCallExpressionKw('line', args, tag)
+        } else {
+          const args = [
+            createLabeledArg(ARG_END, createArrayExpression(values)),
           ]
           return createStdlibCallExpressionKw(
             callExp.node.callee.name.name as ToolTip,
@@ -1517,6 +1519,7 @@ export function removeSingleConstraint({
             tag
           )
         }
+      }
       if (
         inputToReplace.type === 'arrayInObject' ||
         inputToReplace.type === 'objectProperty'

src/lib/operations.test.ts

@@ -1,12 +1,7 @@
 import type { Operation } from '@rust/kcl-lib/bindings/Operation'
-import { topLevelRange } from '@src/lang/util'
 
-import {
-  assertParse,
-  defaultSourceRange,
-  type SourceRange,
-} from '@src/lang/wasm'
-import { filterOperations, getOperationVariableName } from '@src/lib/operations'
+import { defaultSourceRange } from '@src/lang/wasm'
+import { filterOperations } from '@src/lib/operations'
 
 function stdlib(name: string): Operation {
   return {
@@ -167,75 +162,3 @@ describe('operations filtering', () => {
     ])
   })
 })
-
-function rangeOfText(fullCode: string, target: string): SourceRange {
-  const start = fullCode.indexOf(target)
-  if (start === -1) {
-    throw new Error(`Could not find \`${target}\` in: ${fullCode}`)
-  }
-  return topLevelRange(start, start + target.length)
-}
-
-describe('variable name of operations', () => {
-  it('finds the variable name with simple assignment', async () => {
-    const op = stdlib('stdLibFn')
-    if (op.type !== 'StdLibCall') {
-      throw new Error('Expected operation to be a StdLibCall')
-    }
-    const code = `myVar = stdLibFn()`
-    // Make the source range match the code.
-    op.sourceRange = rangeOfText(code, 'stdLibFn()')
-
-    const program = assertParse(code)
-    const variableName = getOperationVariableName(op, program)
-    expect(variableName).toBe('myVar')
-  })
-  it('finds the variable name inside a function with simple assignment', async () => {
-    const op = stdlib('stdLibFn')
-    if (op.type !== 'StdLibCall') {
-      throw new Error('Expected operation to be a StdLibCall')
-    }
-    const code = `fn myFunc() {
-  myVar = stdLibFn()
-  return 0
-}
-`
-    // Make the source range match the code.
-    op.sourceRange = rangeOfText(code, 'stdLibFn()')
-
-    const program = assertParse(code)
-    const variableName = getOperationVariableName(op, program)
-    expect(variableName).toBe('myVar')
-  })
-  it("finds the variable name when it's the last in a pipeline", async () => {
-    const op = stdlib('stdLibFn')
-    if (op.type !== 'StdLibCall') {
-      throw new Error('Expected operation to be a StdLibCall')
-    }
-    const code = `myVar = foo()
-  |> stdLibFn()
-`
-    // Make the source range match the code.
-    op.sourceRange = rangeOfText(code, 'stdLibFn()')
-
-    const program = assertParse(code)
-    const variableName = getOperationVariableName(op, program)
-    expect(variableName).toBe('myVar')
-  })
-  it("finds nothing when it's not the last in a pipeline", async () => {
-    const op = stdlib('stdLibFn')
-    if (op.type !== 'StdLibCall') {
-      throw new Error('Expected operation to be a StdLibCall')
-    }
-    const code = `myVar = foo()
-  |> stdLibFn()
-  |> bar()
-`
-    // Make the source range match the code.
-    op.sourceRange = rangeOfText(code, 'stdLibFn()')
-
-    const program = assertParse(code)
-    const variableName = getOperationVariableName(op, program)
-    expect(variableName).toBeUndefined()
-  })
-})

src/lib/operations.ts

@@ -15,13 +15,7 @@ import {
   getSweepEdgeCodeRef,
   getWallCodeRef,
 } from '@src/lang/std/artifactGraph'
-import {
-  type CallExpressionKw,
-  type PipeExpression,
-  type Program,
-  sourceRangeFromRust,
-  type VariableDeclaration,
-} from '@src/lang/wasm'
+import { type PipeExpression, sourceRangeFromRust } from '@src/lang/wasm'
 import type {
   HelixModes,
   ModelingCommandSchema,
@@ -1080,71 +1074,6 @@ export function getOperationIcon(op: Operation): CustomIconName {
   }
 }
 
-/**
- * If the result of the operation is assigned to a variable, returns the
- * variable name.
- */
-export function getOperationVariableName(
-  op: Operation,
-  program: Program
-): string | undefined {
-  if (
-    op.type !== 'StdLibCall' &&
-    !(op.type === 'GroupBegin' && op.group.type === 'FunctionCall')
-  ) {
-    return undefined
-  }
-  // Find the AST node.
-  const range = sourceRangeFromRust(op.sourceRange)
-  const pathToNode = getNodePathFromSourceRange(program, range)
-  if (pathToNode.length === 0) {
-    return undefined
-  }
-  const call = getNodeFromPath<CallExpressionKw>(
-    program,
-    pathToNode,
-    'CallExpressionKw'
-  )
-  if (err(call) || call.node.type !== 'CallExpressionKw') {
-    return undefined
-  }
-  // Find the var name from the variable declaration.
-  const varDec = getNodeFromPath<VariableDeclaration>(
-    program,
-    pathToNode,
-    'VariableDeclaration'
-  )
-  if (err(varDec)) {
-    return undefined
-  }
-  if (varDec.node.type !== 'VariableDeclaration') {
-    // There's no variable declaration for this call.
-    return undefined
-  }
-  const varName = varDec.node.declaration.id.name
-  // If the operation is a simple assignment, we can use the variable name.
-  if (varDec.node.declaration.init === call.node) {
-    return varName
-  }
-  // If the AST node is in a pipe expression, we can only use the variable
-  // name if it's the last operation in the pipe.
-  const pipe = getNodeFromPath<PipeExpression>(
-    program,
-    pathToNode,
-    'PipeExpression'
-  )
-  if (err(pipe)) {
-    return undefined
-  }
-  if (
-    pipe.node.type === 'PipeExpression' &&
-    pipe.node.body[pipe.node.body.length - 1] === call.node
-  ) {
-    return varName
-  }
-  return undefined
-}
-
 /**
  * Apply all filters to a list of operations.
  */

src/lib/selections.ts

@@ -703,7 +703,8 @@ export async function sendSelectEventToEngine(
     cmd_id: uuidv4(),
   })
   if (!res) {
-    return Promise.reject('no response')
+    console.warn('No response')
+    return undefined
   }
 
   if (isArray(res)) {

src/machines/engineStreamMachine.ts

@@ -70,7 +70,6 @@ export async function holdOntoVideoFrameInCanvas(
   video: HTMLVideoElement,
   canvas: HTMLCanvasElement
 ) {
-  video.pause()
   canvas.width = video.videoWidth
   canvas.height = video.videoHeight
   canvas.style.width = video.videoWidth + 'px'
@@ -220,12 +219,15 @@ export const engineStreamMachine = setup({
         if (context.videoRef.current && context.canvasRef.current) {
           await context.videoRef.current.pause()
 
+          // It's possible we've already frozen the frame due to a disconnect.
+          if (context.videoRef.current.style.display !== 'none') {
             await holdOntoVideoFrameInCanvas(
               context.videoRef.current,
               context.canvasRef.current
             )
             context.videoRef.current.style.display = 'none'
           }
+        }
 
         await rootContext.sceneInfra.camControls.saveRemoteCameraState()
 
@@ -365,9 +367,12 @@ export const engineStreamMachine = setup({
         }),
       },
       on: {
-        [EngineStreamTransition.StartOrReconfigureEngine]: {
+        [EngineStreamTransition.Resume]: {
           target: EngineStreamState.Resuming,
         },
+        [EngineStreamTransition.Stop]: {
+          target: EngineStreamState.Stopped,
+        },
       },
     },
     [EngineStreamState.Stopped]: {
@@ -398,12 +403,23 @@ export const engineStreamMachine = setup({
           rootContext: args.self.system.get('root').getSnapshot().context,
           event: args.event,
         }),
+        // Usually only fails if there was a disconnection mid-way.
+        onError: [
+          {
+            target: EngineStreamState.WaitingForDependencies,
+            reenter: true,
+          },
+        ],
       },
       on: {
         // The stream can be paused as it's resuming.
         [EngineStreamTransition.Pause]: {
           target: EngineStreamState.Paused,
         },
+        // The stream can be stopped as it's resuming.
+        [EngineStreamTransition.Stop]: {
+          target: EngineStreamState.Stopped,
+        },
         [EngineStreamTransition.SetMediaStream]: {
           target: EngineStreamState.Playing,
           actions: [