Revert perf changes (#3217)

Step 1 of the master plan 😂 

![CleanShot 2024-03-19 at 16 05
08](https://github.com/tldraw/tldraw/assets/2523721/7d2afed9-7b69-4fdb-8b9f-54a48c61258f)

This:
- Reverts #3186 
- Reverts #3160 (there were some conflicting changes so it's not a
straight revert)
- Reverts most of #2977 


### Change Type

<!-- ❗ Please select a 'Scope' label ❗️ -->

- [ ] `sdk` — Changes the tldraw SDK
- [ ] `dotcom` — Changes the tldraw.com web app
- [ ] `docs` — Changes to the documentation, examples, or templates.
- [ ] `vs code` — Changes to the vscode plugin
- [x] `internal` — Does not affect user-facing stuff

<!-- ❗ Please select a 'Type' label ❗️ -->

- [ ] `bugfix` — Bug fix
- [ ] `feature` — New feature
- [ ] `improvement` — Improving existing features
- [x] `chore` — Updating dependencies, other boring stuff
- [ ] `galaxy brain` — Architectural changes
- [ ] `tests` — Changes to any test code
- [ ] `tools` — Changes to infrastructure, CI, internal scripts,
debugging tools, etc.
- [ ] `dunno` — I don't know

apps/examples/package.json

@@ -29,8 +29,8 @@
 		"dev": "vite --host",
 		"build": "vite build",
 		"lint": "yarn run -T tsx ../../scripts/lint.ts",
-		"e2e": "NODE_ENV=test && playwright test -c ./e2e/playwright.config.ts",
+		"e2e": "playwright test -c ./e2e/playwright.config.ts",
-		"e2e-ui": "NODE_ENV=test && playwright test --ui -c ./e2e/playwright.config.ts"
+		"e2e-ui": "playwright test --ui -c ./e2e/playwright.config.ts"
 	},
 	"dependencies": {
 		"@playwright/test": "^1.38.1",

packages/editor/src/lib/components/Shape.tsx

@@ -1,7 +1,7 @@
-import { useLayoutReaction, useStateTracking } from '@tldraw/state'
+import { useQuickReactor, useStateTracking } from '@tldraw/state'
 import { IdOf } from '@tldraw/store'
 import { TLShape, TLShapeId } from '@tldraw/tlschema'
-import { memo, useCallback, useLayoutEffect, useRef } from 'react'
+import { memo, useCallback, useRef } from 'react'
 import { ShapeUtil } from '../editor/shapes/ShapeUtil'
 import { useEditor } from '../hooks/useEditor'
 import { useEditorComponents } from '../hooks/useEditorComponents'
@@ -54,7 +54,9 @@ export const Shape = memo(function Shape({
 		height: 0,
 	})
 
-	useLayoutReaction('set shape stuff', () => {
+	useQuickReactor(
+		'set shape stuff',
+		() => {
 			const shape = editor.getShape(id)
 			if (!shape) return // probably the shape was just deleted
 
@@ -93,10 +95,14 @@ export const Shape = memo(function Shape({
 				prev.width = width
 				prev.height = height
 			}
-	})
+		},
+		[editor]
+	)
 
 	// This stuff changes pretty infrequently, so we can change them together
-	useLayoutEffect(() => {
+	useQuickReactor(
+		'set opacity and z-index',
+		() => {
 			const container = containerRef.current
 			const bgContainer = bgContainerRef.current
 
@@ -107,7 +113,9 @@ export const Shape = memo(function Shape({
 			// Z-Index
 			setStyleProperty(container, 'z-index', index)
 			setStyleProperty(bgContainer, 'z-index', backgroundIndex)
-	}, [opacity, index, backgroundIndex])
+		},
+		[opacity, index, backgroundIndex]
+	)
 
 	const annotateError = useCallback(
 		(error: any) => editor.annotateError(error, { origin: 'shape', willCrashApp: false }),
@@ -169,14 +177,18 @@ const CulledShape = function CulledShape<T extends TLShape>({ shapeId }: { shape
 	const editor = useEditor()
 	const culledRef = useRef<HTMLDivElement>(null)
 
-	useLayoutReaction('set shape stuff', () => {
+	useQuickReactor(
+		'set shape stuff',
+		() => {
 			const bounds = editor.getShapeGeometry(shapeId).bounds
 			setStyleProperty(
 				culledRef.current,
 				'transform',
 				`translate(${toDomPrecision(bounds.minX)}px, ${toDomPrecision(bounds.minY)}px)`
 			)
-	})
+		},
+		[editor]
+	)
 
 	return <div ref={culledRef} className="tl-shape__culled" />
 }

packages/editor/src/lib/components/default-components/DefaultCanvas.tsx

@@ -1,4 +1,4 @@
-import { react, useLayoutReaction, useValue } from '@tldraw/state'
+import { react, useQuickReactor, useValue } from '@tldraw/state'
 import { TLHandle, TLShapeId } from '@tldraw/tlschema'
 import { dedupe, modulate, objectMapValues } from '@tldraw/utils'
 import classNames from 'classnames'
@@ -43,7 +43,9 @@ export function DefaultCanvas({ className }: TLCanvasComponentProps) {
 	useGestureEvents(rCanvas)
 	useFixSafariDoubleTapZoomPencilEvents(rCanvas)
 
-	useLayoutReaction('position layers', () => {
+	useQuickReactor(
+		'position layers',
+		() => {
 			const { x, y, z } = editor.getCamera()
 
 			// Because the html container has a width/height of 1px, we
@@ -57,7 +59,9 @@ export function DefaultCanvas({ className }: TLCanvasComponentProps) {
 			)}px,${toDomPrecision(y + offset)}px)`
 			setStyleProperty(rHtmlLayer.current, 'transform', transform)
 			setStyleProperty(rHtmlLayer2.current, 'transform', transform)
-	})
+		},
+		[editor]
+	)
 
 	const events = useCanvasEvents()
 

packages/state/api-report.md

@@ -128,9 +128,6 @@ export function useComputed<Value>(name: string, compute: () => Value, deps: any
 // @public (undocumented)
 export function useComputed<Value, Diff = unknown>(name: string, compute: () => Value, opts: ComputedOptions<Value, Diff>, deps: any[]): Computed<Value>;
 
-// @internal (undocumented)
-export function useLayoutReaction(name: string, effect: () => void): void;
-
 // @public (undocumented)
 export function useQuickReactor(name: string, reactFn: () => void, deps?: any[]): void;
 

packages/state/package.json

@@ -52,9 +52,6 @@
 			"node_modules/(?!(nanoid)/)"
 		]
 	},
-	"dependencies": {
-		"@tldraw/utils": "workspace:*"
-	},
 	"devDependencies": {
 		"@types/lodash": "^4.14.188",
 		"@types/react": "^18.2.47",

packages/state/src/lib/core/EffectScheduler.ts

@@ -51,7 +51,6 @@ class __EffectScheduler__<Result> {
 	lastTraversedEpoch = GLOBAL_START_EPOCH
 
 	private lastReactedEpoch = GLOBAL_START_EPOCH
-	private hasPendingEffect = true
 	private _scheduleCount = 0
 
 	/**
@@ -95,7 +94,6 @@ class __EffectScheduler__<Result> {
 	/** @internal */
 	scheduleEffect() {
 		this._scheduleCount++
-		this.hasPendingEffect = true
 		if (this._scheduleEffect) {
 			// if the effect should be deferred (e.g. until a react render), do so
 			this._scheduleEffect(this.maybeExecute)
@@ -108,7 +106,7 @@ class __EffectScheduler__<Result> {
 	/** @internal */
 	readonly maybeExecute = () => {
 		// bail out if we have been detached before this runs
-		if (!this._isActivelyListening || !this.hasPendingEffect) return
+		if (!this._isActivelyListening) return
 		this.execute()
 	}
 
@@ -144,7 +142,6 @@ class __EffectScheduler__<Result> {
 		try {
 			startCapturingParents(this)
 			const result = this.runEffect(this.lastReactedEpoch)
-			this.hasPendingEffect = false
 			this.lastReactedEpoch = getGlobalEpoch()
 			return result
 		} finally {

packages/state/src/lib/react/index.ts

@@ -1,7 +1,6 @@
 export { track } from './track'
 export { useAtom } from './useAtom'
 export { useComputed } from './useComputed'
-export { useLayoutReaction } from './useLayoutReaction'
 export { useQuickReactor } from './useQuickReactor'
 export { useReactor } from './useReactor'
 export { useStateTracking } from './useStateTracking'

packages/state/src/lib/react/useLayoutReaction.ts

@@ -1,10 +0,0 @@
-import React from 'react'
-import { useTrackedScheduler } from './useTrackedScheduler'
-
-/** @internal */
-export function useLayoutReaction(name: string, effect: () => void): void {
-	const scheduler = useTrackedScheduler(name, effect)
-
-	// eslint-disable-next-line react-hooks/exhaustive-deps
-	React.useLayoutEffect(scheduler.maybeExecute)
-}

packages/state/src/lib/react/useStateTracking.ts

@@ -1,6 +1,60 @@
-import { useTrackedScheduler } from './useTrackedScheduler'
+import React from 'react'
+import { EffectScheduler } from '../core'
 
 /** @internal */
 export function useStateTracking<T>(name: string, render: () => T): T {
-	return useTrackedScheduler(name, render).execute()
+	// This hook creates an effect scheduler that will trigger re-renders when its reactive dependencies change, but it
+	// defers the actual execution of the effect to the consumer of this hook.
+
+	// We need the exec fn to always be up-to-date when calling scheduler.execute() but it'd be wasteful to
+	// instantiate a new EffectScheduler on every render, so we use an immediately-updated ref
+	// to wrap it
+	const renderRef = React.useRef(render)
+	renderRef.current = render
+
+	const [scheduler, subscribe, getSnapshot] = React.useMemo(() => {
+		let scheduleUpdate = null as null | (() => void)
+		// useSyncExternalStore requires a subscribe function that returns an unsubscribe function
+		const subscribe = (cb: () => void) => {
+			scheduleUpdate = cb
+			return () => {
+				scheduleUpdate = null
+			}
+		}
+
+		const scheduler = new EffectScheduler(
+			`useStateTracking(${name})`,
+			// this is what `scheduler.execute()` will call
+			() => renderRef.current?.(),
+			// this is what will be invoked when @tldraw/state detects a change in an upstream reactive value
+			{
+				scheduleEffect() {
+					scheduleUpdate?.()
+				},
+			}
+		)
+
+		// we use an incrementing number based on when this
+		const getSnapshot = () => scheduler.scheduleCount
+
+		return [scheduler, subscribe, getSnapshot]
+	}, [name])
+
+	React.useSyncExternalStore(subscribe, getSnapshot, getSnapshot)
+
+	// reactive dependencies are captured when `scheduler.execute()` is called
+	// and then to make it reactive we wait for a `useEffect` to 'attach'
+	// this allows us to avoid rendering outside of React's render phase
+	// and avoid 'zombie' components that try to render with bad/deleted data before
+	// react has a chance to umount them.
+	React.useEffect(() => {
+		scheduler.attach()
+		// do not execute, we only do that in render
+		scheduler.maybeScheduleEffect()
+		return () => {
+			scheduler.detach()
+		}
+	}, [scheduler])
+
+	return scheduler.execute()
 }

packages/state/src/lib/react/useTrackedScheduler.ts

@@ -1,61 +0,0 @@
-import { fpsThrottle } from '@tldraw/utils'
-import React from 'react'
-import { EffectScheduler } from '../core'
-
-/** @internal */
-export function useTrackedScheduler<T>(name: string, exec: () => T): EffectScheduler<T> {
-	// This hook creates an effect scheduler that will trigger re-renders when its reactive dependencies change, but it
-	// defers the actual execution of the effect to the consumer of this hook.
-
-	// We need the exec fn to always be up-to-date when calling scheduler.execute() but it'd be wasteful to
-	// instantiate a new EffectScheduler on every render, so we use an immediately-updated ref
-	// to wrap it
-	const execRef = React.useRef(exec)
-	execRef.current = exec
-
-	const [scheduler, subscribe, getSnapshot] = React.useMemo(() => {
-		let scheduleUpdate = null as null | (() => void)
-		// useSyncExternalStore requires a subscribe function that returns an unsubscribe function
-		const subscribe = (cb: () => void) => {
-			scheduleUpdate = cb
-			return () => {
-				scheduleUpdate = null
-			}
-		}
-
-		const scheduler = new EffectScheduler(
-			`useStateTracking(${name})`,
-			// this is what `scheduler.execute()` will call
-			() => execRef.current?.(),
-			// this is what will be invoked when @tldraw/state detects a change in an upstream reactive value
-			{
-				scheduleEffect: fpsThrottle(() => {
-					scheduleUpdate?.()
-				}),
-			}
-		)
-
-		// we use an incrementing number based on when this
-		const getSnapshot = () => scheduler.scheduleCount
-
-		return [scheduler, subscribe, getSnapshot]
-	}, [name])
-
-	React.useSyncExternalStore(subscribe, getSnapshot, getSnapshot)
-
-	// reactive dependencies are captured when `scheduler.execute()` is called
-	// and then to make it reactive we wait for a `useEffect` to 'attach'
-	// this allows us to avoid rendering outside of React's render phase
-	// and avoid 'zombie' components that try to render with bad/deleted data before
-	// react has a chance to umount them.
-	React.useEffect(() => {
-		scheduler.attach()
-		// do not execute, we only do that in render
-		scheduler.maybeScheduleEffect()
-		return () => {
-			scheduler.detach()
-		}
-	}, [scheduler])
-
-	return scheduler
-}

packages/state/src/lib/react/useValue.ts

@@ -1,5 +1,4 @@
 /* eslint-disable prefer-rest-params */
-import { throttleToNextFrame } from '@tldraw/utils'
 import { useMemo, useRef, useSyncExternalStore } from 'react'
 import { Signal, computed, react } from '../core'
 
@@ -82,16 +81,10 @@ export function useValue() {
 		const { subscribe, getSnapshot } = useMemo(() => {
 			return {
 				subscribe: (listen: () => void) => {
-					return react(
+					return react(`useValue(${name})`, () => {
-						`useValue(${name})`,
-						() => {
 						$val.get()
 						listen()
-						},
+					})
-						{
-							scheduleEffect: throttleToNextFrame,
-						}
-					)
 				},
 				getSnapshot: () => $val.get(),
 			}

packages/state/tsconfig.json

@@ -2,7 +2,6 @@
 	"extends": "../../config/tsconfig.base.json",
 	"include": ["src"],
 	"exclude": ["node_modules", "dist", ".tsbuild*"],
-	"references": [{ "path": "../utils" }],
 	"compilerOptions": {
 		"outDir": "./.tsbuild",
 		"rootDir": "src"

packages/tldraw/src/lib/shapes/draw/toolStates/Drawing.ts

@@ -51,18 +51,11 @@ export class Drawing extends StateNode {
 
 	markId = null as null | string
 
-	// Used to track whether we have changes that have not yet been pushed to the Editor.
-	isDirty = false
-	// The changes that have not yet been pushed to the Editor.
-	shapePartial: TLShapePartial<DrawableShape> | null = null
-
 	override onEnter = (info: TLPointerEventInfo) => {
 		this.markId = null
 		this.info = info
 		this.canDraw = !this.editor.getIsMenuOpen()
 		this.lastRecordedPoint = this.editor.inputs.currentPagePoint.clone()
-		this.shapePartial = null
-		this.isDirty = false
 		if (this.canDraw) {
 			this.startShape()
 		}
@@ -106,18 +99,10 @@ export class Drawing extends StateNode {
 				this.mergeNextPoint = false
 			}
 
-			this.processUpdates()
+			this.updateShapes()
 		}
 	}
 
-	override onTick = () => {
-		if (!this.isDirty) return
-		this.isDirty = false
-		if (!this.shapePartial) return
-
-		this.editor.updateShapes([this.shapePartial], { squashing: true })
-	}
-
 	override onKeyDown: TLEventHandlers['onKeyDown'] = (info) => {
 		if (info.key === 'Shift') {
 			switch (this.segmentMode) {
@@ -132,7 +117,7 @@ export class Drawing extends StateNode {
 				}
 			}
 		}
-		this.processUpdates()
+		this.updateShapes()
 	}
 
 	override onKeyUp: TLEventHandlers['onKeyUp'] = (info) => {
@@ -154,7 +139,7 @@ export class Drawing extends StateNode {
 			}
 		}
 
-		this.processUpdates()
+		this.updateShapes()
 	}
 
 	override onExit? = () => {
@@ -296,12 +281,7 @@ export class Drawing extends StateNode {
 		this.initialShape = this.editor.getShape<DrawableShape>(id)
 	}
 
-	/**
+	private updateShapes() {
-	 * This function is called to process user actions like moving the mouse or pressing a key.
-	 * The updates are not directly propagated to the Editor. Instead they are stored in the `shapePartial`
-	 * and only sent to the Editor on the next tick.
-	 */
-	private processUpdates() {
 		const { inputs } = this.editor
 		const { initialShape } = this
 
@@ -316,16 +296,12 @@ export class Drawing extends StateNode {
 
 		if (!shape) return
 
-		// We default to the partial, as it might have some segments / points that the editor
+		const { segments } = shape.props
-		// does not know about yet.
-		const segments = this.shapePartial?.props?.segments || shape.props.segments
 
 		const { x, y, z } = this.editor.getPointInShapeSpace(shape, inputs.currentPagePoint).toFixed()
 
 		const newPoint = { x, y, z: this.isPen ? +(z! * 1.25).toFixed(2) : 0.5 }
 
-		this.isDirty = true
-
 		switch (this.segmentMode) {
 			case 'starting_straight': {
 				const { pagePointWhereNextSegmentChanged } = this
@@ -394,7 +370,9 @@ export class Drawing extends StateNode {
 						)
 					}
 
-					this.shapePartial = shapePartial
+					this.editor.updateShapes<TLDrawShape | TLHighlightShape>([shapePartial], {
+						squashing: true,
+					})
 				}
 				break
 			}
@@ -452,7 +430,7 @@ export class Drawing extends StateNode {
 						)
 					}
 
-					this.shapePartial = shapePartial
+					this.editor.updateShapes([shapePartial], { squashing: true })
 				}
 
 				break
@@ -594,7 +572,7 @@ export class Drawing extends StateNode {
 					)
 				}
 
-				this.shapePartial = shapePartial
+				this.editor.updateShapes([shapePartial], { squashing: true })
 
 				break
 			}
@@ -639,19 +617,13 @@ export class Drawing extends StateNode {
 					)
 				}
 
+				this.editor.updateShapes([shapePartial], { squashing: true })
+
+				// Set a maximum length for the lines array; after 200 points, complete the line.
 				if (newPoints.length > 500) {
-					// It's easier to just apply this change directly, so we will mark that the shape is no longer dirty.
+					this.editor.updateShapes([{ id, type: this.shapeType, props: { isComplete: true } }])
-					this.isDirty = false
-					// Also clear the changes as they were flushed.
-					// The next pointerMove will establish a new partial from the new shape created below.
-					this.shapePartial = null
 
-					if (shapePartial?.props) {
+					const { currentPagePoint } = this.editor.inputs
-						shapePartial.props.isComplete = true
-						this.editor.updateShapes([shapePartial])
-					}
-
-					const { currentPagePoint } = inputs
 
 					const newShapeId = createShapeId()
 
@@ -675,10 +647,8 @@ export class Drawing extends StateNode {
 
 					this.initialShape = structuredClone(this.editor.getShape<DrawableShape>(newShapeId)!)
 					this.mergeNextPoint = false
-					this.lastRecordedPoint = inputs.currentPagePoint.clone()
+					this.lastRecordedPoint = this.editor.inputs.currentPagePoint.clone()
 					this.currentLineLength = 0
-				} else {
-					this.shapePartial = shapePartial
 				}
 
 				break

packages/tldraw/src/lib/tools/SelectTool/childStates/Brushing.ts

@@ -27,7 +27,6 @@ export class Brushing extends StateNode {
 	brush = new Box()
 	initialSelectedShapeIds: TLShapeId[] = []
 	excludedShapeIds = new Set<TLShapeId>()
-	isDirty = false
 	isWrapMode = false
 
 	// The shape that the brush started on
@@ -55,7 +54,6 @@ export class Brushing extends StateNode {
 		)
 
 		this.info = info
-		this.isDirty = false
 		this.initialSelectedShapeIds = this.editor.getSelectedShapeIds().slice()
 		this.initialStartShape = this.editor.getShapesAtPoint(currentPagePoint)[0]
 		this.hitTestShapes()
@@ -68,14 +66,10 @@ export class Brushing extends StateNode {
 
 	override onTick = () => {
 		moveCameraWhenCloseToEdge(this.editor)
-		if (this.isDirty) {
-			this.isDirty = false
-			this.hitTestShapes()
-		}
 	}
 
 	override onPointerMove = () => {
-		this.isDirty = true
+		this.hitTestShapes()
 	}
 
 	override onPointerUp: TLEventHandlers['onPointerUp'] = () => {
@@ -105,7 +99,6 @@ export class Brushing extends StateNode {
 
 	private complete() {
 		this.hitTestShapes()
-		this.isDirty = false
 		this.parent.transition('idle')
 	}
 

packages/tldraw/src/lib/tools/SelectTool/childStates/Cropping.ts

@@ -26,7 +26,6 @@ export class Cropping extends StateNode {
 	}
 
 	markId = ''
-	isDirty = false
 
 	private snapshot = {} as any as Snapshot
 
@@ -41,19 +40,11 @@ export class Cropping extends StateNode {
 		this.markId = 'cropping'
 		this.editor.mark(this.markId)
 		this.snapshot = this.createSnapshot()
-		this.isDirty = false
 		this.updateShapes()
 	}
 
-	override onTick = () => {
-		if (this.isDirty) {
-			this.isDirty = false
-			this.updateShapes()
-		}
-	}
-
 	override onPointerMove: TLEventHandlers['onPointerMove'] = () => {
-		this.isDirty = true
+		this.updateShapes()
 	}
 
 	override onPointerUp: TLEventHandlers['onPointerUp'] = () => {
@@ -215,7 +206,6 @@ export class Cropping extends StateNode {
 
 	private complete() {
 		this.updateShapes()
-		this.isDirty = false
 		if (this.info.onInteractionEnd) {
 			this.editor.setCurrentTool(this.info.onInteractionEnd, this.info)
 		} else {

packages/tldraw/src/lib/tools/SelectTool/childStates/DraggingHandle.tsx

@@ -39,7 +39,6 @@ export class DraggingHandle extends StateNode {
 	isPrecise = false
 	isPreciseId = null as TLShapeId | null
 	pointingId = null as TLShapeId | null
-	isDirty = false
 
 	override onEnter: TLEnterEventHandler = (
 		info: TLPointerEventInfo & {
@@ -51,7 +50,6 @@ export class DraggingHandle extends StateNode {
 	) => {
 		const { shape, isCreating, handle } = info
 		this.info = info
-		this.isDirty = false
 		this.parent.setCurrentToolIdMask(info.onInteractionEnd)
 		this.shapeId = shape.id
 		this.markId = isCreating ? `creating:${shape.id}` : 'dragging handle'
@@ -167,15 +165,8 @@ export class DraggingHandle extends StateNode {
 		}
 	}
 
-	override onTick = () => {
-		if (this.isDirty) {
-			this.isDirty = false
-			this.update()
-		}
-	}
-
 	override onPointerMove: TLEventHandlers['onPointerMove'] = () => {
-		this.isDirty = true
+		this.update()
 	}
 
 	override onKeyDown: TLKeyboardEvent | undefined = () => {
@@ -192,7 +183,6 @@ export class DraggingHandle extends StateNode {
 
 	override onComplete: TLEventHandlers['onComplete'] = () => {
 		this.update()
-		this.isDirty = false
 		this.complete()
 	}
 

packages/tldraw/src/lib/tools/SelectTool/childStates/Resizing.ts

@@ -75,15 +75,10 @@ export class Resizing extends StateNode {
 
 	override onTick = () => {
 		moveCameraWhenCloseToEdge(this.editor)
-		if (!this.isDirty) return
-		this.isDirty = false
-		this.updateShapes()
 	}
 
-	isDirty = false
-
 	override onPointerMove: TLEventHandlers['onPointerMove'] = () => {
-		this.isDirty = true
+		this.updateShapes()
 	}
 
 	override onKeyDown: TLEventHandlers['onKeyDown'] = () => {

packages/tldraw/src/lib/tools/SelectTool/childStates/Rotating.ts

@@ -22,7 +22,6 @@ export class Rotating extends StateNode {
 	info = {} as Extract<TLPointerEventInfo, { target: 'selection' }> & { onInteractionEnd?: string }
 
 	markId = ''
-	isDirty = false
 
 	override onEnter = (
 		info: TLPointerEventInfo & { target: 'selection'; onInteractionEnd?: string }
@@ -66,15 +65,8 @@ export class Rotating extends StateNode {
 		this.snapshot = {} as TLRotationSnapshot
 	}
 
-	override onTick = () => {
-		if (this.isDirty) {
-			this.isDirty = false
-			this.update()
-		}
-	}
-
 	override onPointerMove = () => {
-		this.isDirty = true
+		this.update()
 	}
 
 	override onKeyDown = () => {

packages/tldraw/src/lib/tools/SelectTool/childStates/ScribbleBrushing.ts

@@ -24,8 +24,6 @@ export class ScribbleBrushing extends StateNode {
 	initialSelectedShapeIds = new Set<TLShapeId>()
 	newlySelectedShapeIds = new Set<TLShapeId>()
 
-	isDirty = false
-
 	override onEnter = () => {
 		this.initialSelectedShapeIds = new Set<TLShapeId>(
 			this.editor.inputs.shiftKey ? this.editor.getSelectedShapeIds() : []
@@ -33,7 +31,6 @@ export class ScribbleBrushing extends StateNode {
 		this.newlySelectedShapeIds = new Set<TLShapeId>()
 		this.size = 0
 		this.hits.clear()
-		this.isDirty = false
 
 		const scribbleItem = this.editor.scribbles.addScribble({
 			color: 'selection-stroke',
@@ -54,15 +51,8 @@ export class ScribbleBrushing extends StateNode {
 		this.editor.scribbles.stop(this.scribbleId)
 	}
 
-	override onTick = () => {
-		if (this.isDirty) {
-			this.isDirty = false
-			this.updateScribbleSelection(true)
-		}
-	}
-
 	override onPointerMove = () => {
-		this.isDirty = true
+		this.updateScribbleSelection(true)
 	}
 
 	override onPointerUp = () => {
@@ -168,7 +158,6 @@ export class ScribbleBrushing extends StateNode {
 
 	private complete() {
 		this.updateScribbleSelection(true)
-		this.isDirty = false
 		this.parent.transition('idle')
 	}
 

packages/tldraw/src/lib/tools/SelectTool/childStates/Translating.ts

@@ -35,7 +35,6 @@ export class Translating extends StateNode {
 
 	isCloning = false
 	isCreating = false
-	isDirty = false
 	onCreate: (shape: TLShape | null) => void = () => void null
 
 	dragAndDropManager = new DragAndDropManager(this.editor)
@@ -51,7 +50,6 @@ export class Translating extends StateNode {
 		const { isCreating = false, onCreate = () => void null } = info
 
 		this.info = info
-		this.isDirty = false
 		this.parent.setCurrentToolIdMask(info.onInteractionEnd)
 		this.isCreating = isCreating
 		this.onCreate = onCreate
@@ -100,14 +98,10 @@ export class Translating extends StateNode {
 			this.updateParentTransforms
 		)
 		moveCameraWhenCloseToEdge(this.editor)
-		if (this.isDirty) {
-			this.isDirty = false
-			this.updateShapes()
-		}
 	}
 
 	override onPointerMove = () => {
-		this.isDirty = true
+		this.updateShapes()
 	}
 
 	override onKeyDown = () => {
@@ -172,7 +166,6 @@ export class Translating extends StateNode {
 
 	protected complete() {
 		this.updateShapes()
-		this.isDirty = false
 		this.dragAndDropManager.dropShapes(this.snapshot.movingShapes)
 		this.handleEnd()
 

packages/tldraw/src/test/TestEditor.ts

@@ -311,18 +311,6 @@ export class TestEditor extends Editor {
 
 	/* ------------------ Input Events ------------------ */
 
-	/**
-	Some of our updates are not synchronous any longer. For example, drawing happens on tick instead of on pointer move.
-	You can use this helper to force the tick, which will then process all the updates.
-	*/
-	forceTick = (count = 1) => {
-		const tick = (this as any)._tickManager as { tick(): void }
-		for (let i = 0; i < count; i++) {
-			tick.tick()
-		}
-		return this
-	}
-
 	pointerMove = (
 		x = this.inputs.currentScreenPoint.x,
 		y = this.inputs.currentScreenPoint.y,
@@ -332,7 +320,7 @@ export class TestEditor extends Editor {
 		this.dispatch({
 			...this.getPointerEventInfo(x, y, options, modifiers),
 			name: 'pointer_move',
-		}).forceTick()
+		})
 		return this
 	}
 

packages/tldraw/src/test/drawing.test.ts

@@ -211,7 +211,6 @@ for (const toolType of ['draw', 'highlight'] as const) {
 			expect(point1.x).toBe(1)
 
 			editor.keyDown('Meta')
-			editor.forceTick()
 			const shape2 = editor.getCurrentPageShapes()[0] as DrawableShape
 			const segment2 = last(shape2.props.segments)!
 			const point2 = last(segment2.points)!
@@ -237,7 +236,6 @@ for (const toolType of ['draw', 'highlight'] as const) {
 			expect(point1.x).toBe(1)
 
 			editor.keyDown('Meta')
-			editor.forceTick()
 			const shape2 = editor.getCurrentPageShapes()[0] as DrawableShape
 			const segment2 = last(shape2.props.segments)!
 			const point2 = last(segment2.points)!

packages/tldraw/src/test/translating.test.ts

@@ -137,14 +137,14 @@ describe('When translating...', () => {
 
 		const before = editor.getShape<TLGeoShape>(ids.box1)!
 
-		editor.forceTick(5)
+		jest.advanceTimersByTime(100)
 		editor
 			// The change is bigger than expected because the camera moves
 			.expectShapeToMatch({ id: ids.box1, x: -160, y: 10 })
 			// We'll continue moving in the x postion, but now we'll also move in the y position.
 			// The speed in the y position is smaller since we are further away from the edge.
 			.pointerMove(0, 25)
-		editor.forceTick(2)
+		jest.advanceTimersByTime(100)
 		editor.pointerUp()
 
 		const after = editor.getShape<TLGeoShape>(ids.box1)!
@@ -159,16 +159,16 @@ describe('When translating...', () => {
 		editor.user.updateUserPreferences({ edgeScrollSpeed: 1 })
 		editor.pointerDown(50, 50, ids.box1).pointerMove(1080, 50)
 
+		jest.advanceTimersByTime(100)
 		editor
-			.forceTick(4)
 			// The change is bigger than expected because the camera moves
-			.expectShapeToMatch({ id: ids.box1, x: 1140, y: 10 })
+			.expectShapeToMatch({ id: ids.box1, x: 1160, y: 10 })
 			.pointerMove(1080, 800)
-			.forceTick(6)
+		jest.advanceTimersByTime(100)
 		editor
-			.expectShapeToMatch({ id: ids.box1, x: 1280, y: 845.68 })
+			.expectShapeToMatch({ id: ids.box1, x: 1300, y: 845.68 })
 			.pointerUp()
-			.expectShapeToMatch({ id: ids.box1, x: 1280, y: 845.68 })
+			.expectShapeToMatch({ id: ids.box1, x: 1300, y: 845.68 })
 	})
 
 	it('translates multiple shapes', () => {
@@ -1897,68 +1897,11 @@ describe('Moving the camera while panning', () => {
 			.expectToBeIn('select.translating')
 			.expectShapeToMatch({ id: ids.box1, x: 10, y: 10 })
 			.wheel(-10, -10) // wheel by -10,-10
-			.forceTick() // needed
 			.expectShapeToMatch({ id: ids.box1, x: 20, y: 20 })
 			.wheel(-10, -10) // wheel by -10,-10
-			.forceTick() // needed
 			.expectShapeToMatch({ id: ids.box1, x: 30, y: 30 })
 	})
 
-	it('FAILING EXAMPLE: preserves screen point while dragging', () => {
-		editor.createShape({
-			type: 'geo',
-			id: ids.box1,
-			x: 0,
-			y: 0,
-			props: { geo: 'rectangle', w: 100, h: 100, fill: 'solid' },
-		})
-
-		editor
-			.expectCameraToBe(0, 0, 1)
-			.expectShapeToMatch({ id: ids.box1, x: 0, y: 0 })
-			.expectPageBoundsToBe(ids.box1, { x: 0, y: 0 })
-			.expectScreenBoundsToBe(ids.box1, { x: 0, y: 0 })
-			.expectToBeIn('select.idle')
-			.pointerMove(40, 40)
-			.pointerDown()
-			.expectToBeIn('select.pointing_shape')
-			.pointerMove(50, 50) // move by 10,10
-			.expectToBeIn('select.translating')
-
-			// we haven't moved the camera from origin yet, so the
-			// point / page / screen points should all be identical
-			.expectCameraToBe(0, 0, 1)
-			.expectShapeToMatch({ id: ids.box1, x: 10, y: 10 })
-			.expectPageBoundsToBe(ids.box1, { x: 10, y: 10 })
-			.expectScreenBoundsToBe(ids.box1, { x: 10, y: 10 })
-
-			// now we move the camera by -10,-10
-			// since we're dragging, they should still all move together
-			.wheel(-10, -10)
-
-			// ! This is the problem here—the screen point has changed
-			// ! because the camera moved but the resulting pointer move
-			// ! isn't processed until after the tick
-			.expectCameraToBe(-10, -10, 1)
-			.expectScreenBoundsToBe(ids.box1, { x: 0, y: 0 }) // should be 10,10
-
-			// nothing else has changed yet... until the tick
-			.expectShapeToMatch({ id: ids.box1, x: 10, y: 10 })
-			.expectPageBoundsToBe(ids.box1, { x: 10, y: 10 })
-
-			.forceTick() // needed
-
-			// The camera is still the same...
-			.expectCameraToBe(-10, -10, 1)
-
-			// But we've processed a pointer move, which has changed the shapes
-			.expectShapeToMatch({ id: ids.box1, x: 20, y: 20 })
-			.expectPageBoundsToBe(ids.box1, { x: 20, y: 20 })
-
-			// ! And this has fixed the screen point
-			.expectScreenBoundsToBe(ids.box1, { x: 10, y: 10 })
-	})
-
 	it('Correctly preserves screen point while dragging', async () => {
 		editor.createShape({
 			type: 'geo',
@@ -1990,8 +1933,6 @@ describe('Moving the camera while panning', () => {
 			// now we move the camera by -10,-10
 			// since we're dragging, they should still all move together
 			.wheel(-10, -10)
-			.forceTick()
-			// wait for a tick to allow the tick manager to dispatch to the translating tool
 
 			// The camera has moved
 			.expectCameraToBe(-10, -10, 1)

yarn.lock

@@ -7399,7 +7399,6 @@ __metadata:
   version: 0.0.0-use.local
   resolution: "@tldraw/state@workspace:packages/state"
   dependencies:
-    "@tldraw/utils": "workspace:*"
     "@types/lodash": "npm:^4.14.188"
     "@types/react": "npm:^18.2.47"
     "@types/react-test-renderer": "npm:^18.0.0"