hooks.js.map in isomorfeus-preact-10.6.15

- old
+ new
@@ -1 +1 @@
-{"version":3,"file":"hooks.js","sources":["../src/index.js"],"sourcesContent":["import { options } from 'preact';\r\n\r\n/** @type {number} */\r\nlet currentIndex;\r\n\r\n/** @type {import('./internal').Component} */\r\nlet currentComponent;\r\n\r\n/** @type {number} */\r\nlet currentHook = 0;\r\n\r\n/** @type {Array<import('./internal').Component>} */\r\nlet afterPaintEffects = [];\r\n\r\nlet oldBeforeDiff = options._diff;\r\nlet oldBeforeRender = options._render;\r\nlet oldAfterDiff = options.diffed;\r\nlet oldCommit = options._commit;\r\nlet oldBeforeUnmount = options.unmount;\r\n\r\nconst RAF_TIMEOUT = 100;\r\nlet prevRaf;\r\n\r\noptions._diff = vnode => {\r\n\tcurrentComponent = null;\r\n\tif (oldBeforeDiff) oldBeforeDiff(vnode);\r\n};\r\n\r\noptions._render = vnode => {\r\n\tif (oldBeforeRender) oldBeforeRender(vnode);\r\n\r\n\tcurrentComponent = vnode._component;\r\n\tcurrentIndex = 0;\r\n\r\n\tconst hooks = currentComponent.__hooks;\r\n\tif (hooks) {\r\n\t\thooks._pendingEffects.forEach(invokeCleanup);\r\n\t\thooks._pendingEffects.forEach(invokeEffect);\r\n\t\thooks._pendingEffects = [];\r\n\t}\r\n};\r\n\r\noptions.diffed = vnode => {\r\n\tif (oldAfterDiff) oldAfterDiff(vnode);\r\n\r\n\tconst c = vnode._component;\r\n\tif (c && c.__hooks && c.__hooks._pendingEffects.length) {\r\n\t\tafterPaint(afterPaintEffects.push(c));\r\n\t}\r\n\tcurrentComponent = null;\r\n};\r\n\r\noptions._commit = (vnode, commitQueue) => {\r\n\tcommitQueue.some(component => {\r\n\t\ttry {\r\n\t\t\tcomponent._renderCallbacks.forEach(invokeCleanup);\r\n\t\t\tcomponent._renderCallbacks = component._renderCallbacks.filter(cb =>\r\n\t\t\t\tcb._value ? invokeEffect(cb) : true\r\n\t\t\t);\r\n\t\t} catch (e) {\r\n\t\t\tcommitQueue.some(c => {\r\n\t\t\t\tif (c._renderCallbacks) c._renderCallbacks = [];\r\n\t\t\t});\r\n\t\t\tcommitQueue = [];\r\n\t\t\toptions._catchError(e, component._vnode);\r\n\t\t}\r\n\t});\r\n\r\n\tif (oldCommit) oldCommit(vnode, commitQueue);\r\n};\r\n\r\noptions.unmount = vnode => {\r\n\tif (oldBeforeUnmount) oldBeforeUnmount(vnode);\r\n\r\n\tconst c = vnode._component;\r\n\tif (c && c.__hooks) {\r\n\t\tlet hasErrored;\r\n\t\tc.__hooks._list.forEach(s => {\r\n\t\t\ttry {\r\n\t\t\t\tinvokeCleanup(s);\r\n\t\t\t} catch (e) {\r\n\t\t\t\thasErrored = e;\r\n\t\t\t}\r\n\t\t});\r\n\t\tif (hasErrored) options._catchError(hasErrored, c._vnode);\r\n\t}\r\n};\r\n\r\n/**\r\n * Get a hook's state from the currentComponent\r\n * @param {number} index The index of the hook to get\r\n * @param {number} type The index of the hook to get\r\n * @returns {any}\r\n */\r\nfunction getHookState(index, type) {\r\n\tif (options._hook) {\r\n\t\toptions._hook(currentComponent, index, currentHook || type);\r\n\t}\r\n\tcurrentHook = 0;\r\n\r\n\t// Largely inspired by:\r\n\t// * https://github.com/michael-klein/funcy.js/blob/f6be73468e6ec46b0ff5aa3cc4c9baf72a29025a/src/hooks/core_hooks.mjs\r\n\t// * https://github.com/michael-klein/funcy.js/blob/650beaa58c43c33a74820a3c98b3c7079cf2e333/src/renderer.mjs\r\n\t// Other implementations to look at:\r\n\t// * https://codesandbox.io/s/mnox05qp8\r\n\tconst hooks =\r\n\t\tcurrentComponent.__hooks ||\r\n\t\t(currentComponent.__hooks = {\r\n\t\t\t_list: [],\r\n\t\t\t_pendingEffects: []\r\n\t\t});\r\n\r\n\tif (index >= hooks._list.length) {\r\n\t\thooks._list.push({});\r\n\t}\r\n\treturn hooks._list[index];\r\n}\r\n\r\n/**\r\n * @param {import('./index').StateUpdater<any>} [initialState]\r\n */\r\nexport function useState(initialState) {\r\n\tcurrentHook = 1;\r\n\treturn useReducer(invokeOrReturn, initialState);\r\n}\r\n\r\n/**\r\n * @param {import('./index').Reducer<any, any>} reducer\r\n * @param {import('./index').StateUpdater<any>} initialState\r\n * @param {(initialState: any) => void} [init]\r\n * @returns {[ any, (state: any) => void ]}\r\n */\r\nexport function useReducer(reducer, initialState, init) {\r\n\t/** @type {import('./internal').ReducerHookState} */\r\n\tconst hookState = getHookState(currentIndex++, 2);\r\n\thookState._reducer = reducer;\r\n\tif (!hookState._component) {\r\n\t\thookState._value = [\r\n\t\t\t!init ? invokeOrReturn(undefined, initialState) : init(initialState),\r\n\r\n\t\t\taction => {\r\n\t\t\t\tconst nextValue = hookState._reducer(hookState._value[0], action);\r\n\t\t\t\tif (hookState._value[0] !== nextValue) {\r\n\t\t\t\t\thookState._value = [nextValue, hookState._value[1]];\r\n\t\t\t\t\thookState._component.setState({});\r\n\t\t\t\t}\r\n\t\t\t}\r\n\t\t];\r\n\r\n\t\thookState._component = currentComponent;\r\n\t}\r\n\r\n\treturn hookState._value;\r\n}\r\n\r\n/**\r\n * @param {import('./internal').Effect} callback\r\n * @param {any[]} args\r\n */\r\nexport function useEffect(callback, args) {\r\n\t/** @type {import('./internal').EffectHookState} */\r\n\tconst state = getHookState(currentIndex++, 3);\r\n\tif (!options._skipEffects && argsChanged(state._args, args)) {\r\n\t\tstate._value = callback;\r\n\t\tstate._args = args;\r\n\r\n\t\tcurrentComponent.__hooks._pendingEffects.push(state);\r\n\t}\r\n}\r\n\r\n/**\r\n * @param {import('./internal').Effect} callback\r\n * @param {any[]} args\r\n */\r\nexport function useLayoutEffect(callback, args) {\r\n\t/** @type {import('./internal').EffectHookState} */\r\n\tconst state = getHookState(currentIndex++, 4);\r\n\tif (!options._skipEffects && argsChanged(state._args, args)) {\r\n\t\tstate._value = callback;\r\n\t\tstate._args = args;\r\n\r\n\t\tcurrentComponent._renderCallbacks.push(state);\r\n\t}\r\n}\r\n\r\nexport function useRef(initialValue) {\r\n\tcurrentHook = 5;\r\n\treturn useMemo(() => ({ current: initialValue }), []);\r\n}\r\n\r\n/**\r\n * @param {object} ref\r\n * @param {() => object} createHandle\r\n * @param {any[]} args\r\n */\r\nexport function useImperativeHandle(ref, createHandle, args) {\r\n\tcurrentHook = 6;\r\n\tuseLayoutEffect(\r\n\t\t() => {\r\n\t\t\tif (typeof ref == 'function') ref(createHandle());\r\n\t\t\telse if (ref) ref.current = createHandle();\r\n\t\t},\r\n\t\targs == null ? args : args.concat(ref)\r\n\t);\r\n}\r\n\r\n/**\r\n * @param {() => any} factory\r\n * @param {any[]} args\r\n */\r\nexport function useMemo(factory, args) {\r\n\t/** @type {import('./internal').MemoHookState} */\r\n\tconst state = getHookState(currentIndex++, 7);\r\n\tif (argsChanged(state._args, args)) {\r\n\t\tstate._value = factory();\r\n\t\tstate._args = args;\r\n\t\tstate._factory = factory;\r\n\t}\r\n\r\n\treturn state._value;\r\n}\r\n\r\n/**\r\n * @param {() => void} callback\r\n * @param {any[]} args\r\n */\r\nexport function useCallback(callback, args) {\r\n\tcurrentHook = 8;\r\n\treturn useMemo(() => callback, args);\r\n}\r\n\r\n/**\r\n * @param {import('./internal').PreactContext} context\r\n */\r\nexport function useContext(context) {\r\n\tconst provider = currentComponent.context[context._id];\r\n\t// We could skip this call here, but than we'd not call\r\n\t// `options._hook`. We need to do that in order to make\r\n\t// the devtools aware of this hook.\r\n\t/** @type {import('./internal').ContextHookState} */\r\n\tconst state = getHookState(currentIndex++, 9);\r\n\t// The devtools needs access to the context object to\r\n\t// be able to pull of the default value when no provider\r\n\t// is present in the tree.\r\n\tstate._context = context;\r\n\tif (!provider) return context._defaultValue;\r\n\t// This is probably not safe to convert to \"!\"\r\n\tif (state._value == null) {\r\n\t\tstate._value = true;\r\n\t\tprovider.sub(currentComponent);\r\n\t}\r\n\treturn provider.props.value;\r\n}\r\n\r\n/**\r\n * Display a custom label for a custom hook for the devtools panel\r\n * @type {<T>(value: T, cb?: (value: T) => string | number) => void}\r\n */\r\nexport function useDebugValue(value, formatter) {\r\n\tif (options.useDebugValue) {\r\n\t\toptions.useDebugValue(formatter ? formatter(value) : value);\r\n\t}\r\n}\r\n\r\n/**\r\n * @param {(error: any) => void} cb\r\n */\r\nexport function useErrorBoundary(cb) {\r\n\t/** @type {import('./internal').ErrorBoundaryHookState} */\r\n\tconst state = getHookState(currentIndex++, 10);\r\n\tconst errState = useState();\r\n\tstate._value = cb;\r\n\tif (!currentComponent.componentDidCatch) {\r\n\t\tcurrentComponent.componentDidCatch = err => {\r\n\t\t\tif (state._value) state._value(err);\r\n\t\t\terrState[1](err);\r\n\t\t};\r\n\t}\r\n\treturn [\r\n\t\terrState[0],\r\n\t\t() => {\r\n\t\t\terrState[1](undefined);\r\n\t\t}\r\n\t];\r\n}\r\n\r\n/**\r\n * After paint effects consumer.\r\n */\r\nfunction flushAfterPaintEffects() {\r\n\tlet component;\r\n\t// sort the queue by depth (outermost to innermost)\r\n\tafterPaintEffects.sort((a, b) => a._vnode._depth - b._vnode._depth);\r\n\twhile (component = afterPaintEffects.pop()) {\r\n\t\tif (!component._parentDom) continue;\r\n\t\ttry {\r\n\t\t\tcomponent.__hooks._pendingEffects.forEach(invokeCleanup);\r\n\t\t\tcomponent.__hooks._pendingEffects.forEach(invokeEffect);\r\n\t\t\tcomponent.__hooks._pendingEffects = [];\r\n\t\t} catch (e) {\r\n\t\t\tcomponent.__hooks._pendingEffects = [];\r\n\t\t\toptions._catchError(e, component._vnode);\r\n\t\t}\r\n\t}\r\n}\r\n\r\nlet HAS_RAF = typeof requestAnimationFrame == 'function';\r\n\r\n/**\r\n * Schedule a callback to be invoked after the browser has a chance to paint a new frame.\r\n * Do this by combining requestAnimationFrame (rAF) + setTimeout to invoke a callback after\r\n * the next browser frame.\r\n *\r\n * Also, schedule a timeout in parallel to the the rAF to ensure the callback is invoked\r\n * even if RAF doesn't fire (for example if the browser tab is not visible)\r\n *\r\n * @param {() => void} callback\r\n */\r\nfunction afterNextFrame(callback) {\r\n\tconst done = () => {\r\n\t\tclearTimeout(timeout);\r\n\t\tif (HAS_RAF) cancelAnimationFrame(raf);\r\n\t\tsetTimeout(callback);\r\n\t};\r\n\tconst timeout = setTimeout(done, RAF_TIMEOUT);\r\n\r\n\tlet raf;\r\n\tif (HAS_RAF) {\r\n\t\traf = requestAnimationFrame(done);\r\n\t}\r\n}\r\n\r\n// Note: if someone used options.debounceRendering = requestAnimationFrame,\r\n// then effects will ALWAYS run on the NEXT frame instead of the current one, incurring a ~16ms delay.\r\n// Perhaps this is not such a big deal.\r\n/**\r\n * Schedule afterPaintEffects flush after the browser paints\r\n * @param {number} newQueueLength\r\n */\r\nfunction afterPaint(newQueueLength) {\r\n\tif (newQueueLength === 1 || prevRaf !== options.requestAnimationFrame) {\r\n\t\tprevRaf = options.requestAnimationFrame;\r\n\t\t(prevRaf || afterNextFrame)(flushAfterPaintEffects);\r\n\t}\r\n}\r\n\r\n/**\r\n * @param {import('./internal').EffectHookState} hook\r\n */\r\nfunction invokeCleanup(hook) {\r\n\t// A hook cleanup can introduce a call to render which creates a new root, this will call options.vnode\r\n\t// and move the currentComponent away.\r\n\tconst comp = currentComponent;\r\n\tlet cleanup = hook._cleanup;\r\n\tif (typeof cleanup == 'function') {\r\n\t\thook._cleanup = undefined;\r\n\t\tcleanup();\r\n\t}\r\n\tcurrentComponent = comp;\r\n}\r\n\r\n/**\r\n * Invoke a Hook's effect\r\n * @param {import('./internal').EffectHookState} hook\r\n */\r\nfunction invokeEffect(hook) {\r\n\t// A hook call can introduce a call to render which creates a new root, this will call options.vnode\r\n\t// and move the currentComponent away.\r\n\tconst comp = currentComponent;\r\n\thook._cleanup = hook._value();\r\n\tcurrentComponent = comp;\r\n}\r\n\r\n/**\r\n * @param {any[]} oldArgs\r\n * @param {any[]} newArgs\r\n */\r\nfunction argsChanged(oldArgs, newArgs) {\r\n\treturn (\r\n\t\t!oldArgs ||\r\n\t\toldArgs.length !== newArgs.length ||\r\n\t\tnewArgs.some((arg, index) => arg !== oldArgs[index])\r\n\t);\r\n}\r\n\r\nfunction invokeOrReturn(arg, f) {\r\n\treturn typeof f == 'function' ? 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invokeEffect(cb) : true\n\t\t\t);\n\t\t} catch (e) {\n\t\t\tcommitQueue.some(c => {\n\t\t\t\tif (c._renderCallbacks) c._renderCallbacks = [];\n\t\t\t});\n\t\t\tcommitQueue = [];\n\t\t\toptions._catchError(e, component._vnode);\n\t\t}\n\t});\n\n\tif (oldCommit) oldCommit(vnode, commitQueue);\n};\n\noptions.unmount = vnode => {\n\tif (oldBeforeUnmount) oldBeforeUnmount(vnode);\n\n\tconst c = vnode._component;\n\tif (c && c.__hooks) {\n\t\tlet hasErrored;\n\t\tc.__hooks._list.forEach(s => {\n\t\t\ttry {\n\t\t\t\tinvokeCleanup(s);\n\t\t\t} catch (e) {\n\t\t\t\thasErrored = e;\n\t\t\t}\n\t\t});\n\t\tif (hasErrored) options._catchError(hasErrored, c._vnode);\n\t}\n};\n\n/**\n * Get a hook's state from the currentComponent\n * @param {number} index The index of the hook to get\n * @param {number} type The index of the hook to get\n * @returns {any}\n */\nfunction getHookState(index, type) {\n\tif (options._hook) {\n\t\toptions._hook(currentComponent, index, currentHook || type);\n\t}\n\tcurrentHook = 0;\n\n\t// Largely inspired by:\n\t// * https://github.com/michael-klein/funcy.js/blob/f6be73468e6ec46b0ff5aa3cc4c9baf72a29025a/src/hooks/core_hooks.mjs\n\t// * https://github.com/michael-klein/funcy.js/blob/650beaa58c43c33a74820a3c98b3c7079cf2e333/src/renderer.mjs\n\t// Other implementations to look at:\n\t// * https://codesandbox.io/s/mnox05qp8\n\tconst hooks =\n\t\tcurrentComponent.__hooks ||\n\t\t(currentComponent.__hooks = {\n\t\t\t_list: [],\n\t\t\t_pendingEffects: []\n\t\t});\n\n\tif (index >= hooks._list.length) {\n\t\thooks._list.push({});\n\t}\n\treturn hooks._list[index];\n}\n\n/**\n * @param {import('./index').StateUpdater<any>} [initialState]\n */\nexport function useState(initialState) {\n\tcurrentHook = 1;\n\treturn useReducer(invokeOrReturn, initialState);\n}\n\n/**\n * @param {import('./index').Reducer<any, any>} reducer\n * @param {import('./index').StateUpdater<any>} initialState\n * @param {(initialState: any) => void} [init]\n * @returns {[ any, (state: any) => void ]}\n */\nexport function useReducer(reducer, initialState, init) {\n\t/** @type {import('./internal').ReducerHookState} */\n\tconst hookState = getHookState(currentIndex++, 2);\n\thookState._reducer = reducer;\n\tif (!hookState._component) {\n\t\thookState._value = [\n\t\t\t!init ? invokeOrReturn(undefined, initialState) : init(initialState),\n\n\t\t\taction => {\n\t\t\t\tconst nextValue = hookState._reducer(hookState._value[0], action);\n\t\t\t\tif (hookState._value[0] !== nextValue) {\n\t\t\t\t\thookState._value = [nextValue, hookState._value[1]];\n\t\t\t\t\thookState._component.setState({});\n\t\t\t\t}\n\t\t\t}\n\t\t];\n\n\t\thookState._component = currentComponent;\n\t}\n\n\treturn hookState._value;\n}\n\n/**\n * @param {import('./internal').Effect} callback\n * @param {any[]} args\n */\nexport function useEffect(callback, args) {\n\t/** @type {import('./internal').EffectHookState} */\n\tconst state = getHookState(currentIndex++, 3);\n\tif (!options._skipEffects && argsChanged(state._args, args)) {\n\t\tstate._value = callback;\n\t\tstate._args = args;\n\n\t\tcurrentComponent.__hooks._pendingEffects.push(state);\n\t}\n}\n\n/**\n * @param {import('./internal').Effect} callback\n * @param {any[]} args\n */\nexport function useLayoutEffect(callback, args) {\n\t/** @type {import('./internal').EffectHookState} */\n\tconst state = getHookState(currentIndex++, 4);\n\tif (!options._skipEffects && argsChanged(state._args, args)) {\n\t\tstate._value = callback;\n\t\tstate._args = args;\n\n\t\tcurrentComponent._renderCallbacks.push(state);\n\t}\n}\n\nexport function useRef(initialValue) {\n\tcurrentHook = 5;\n\treturn useMemo(() => ({ current: initialValue }), []);\n}\n\n/**\n * @param {object} ref\n * @param {() => object} createHandle\n * @param {any[]} args\n */\nexport function useImperativeHandle(ref, createHandle, args) {\n\tcurrentHook = 6;\n\tuseLayoutEffect(\n\t\t() => {\n\t\t\tif (typeof ref == 'function') ref(createHandle());\n\t\t\telse if (ref) ref.current = createHandle();\n\t\t},\n\t\targs == null ? args : args.concat(ref)\n\t);\n}\n\n/**\n * @param {() => any} factory\n * @param {any[]} args\n */\nexport function useMemo(factory, args) {\n\t/** @type {import('./internal').MemoHookState} */\n\tconst state = getHookState(currentIndex++, 7);\n\tif (argsChanged(state._args, args)) {\n\t\tstate._value = factory();\n\t\tstate._args = args;\n\t\tstate._factory = factory;\n\t}\n\n\treturn state._value;\n}\n\n/**\n * @param {() => void} callback\n * @param {any[]} args\n */\nexport function useCallback(callback, args) {\n\tcurrentHook = 8;\n\treturn useMemo(() => callback, args);\n}\n\n/**\n * @param {import('./internal').PreactContext} context\n */\nexport function useContext(context) {\n\tconst provider = currentComponent.context[context._id];\n\t// We could skip this call here, but than we'd not call\n\t// `options._hook`. We need to do that in order to make\n\t// the devtools aware of this hook.\n\t/** @type {import('./internal').ContextHookState} */\n\tconst state = getHookState(currentIndex++, 9);\n\t// The devtools needs access to the context object to\n\t// be able to pull of the default value when no provider\n\t// is present in the tree.\n\tstate._context = context;\n\tif (!provider) return context._defaultValue;\n\t// This is probably not safe to convert to \"!\"\n\tif (state._value == null) {\n\t\tstate._value = true;\n\t\tprovider.sub(currentComponent);\n\t}\n\treturn provider.props.value;\n}\n\n/**\n * Display a custom label for a custom hook for the devtools panel\n * @type {<T>(value: T, cb?: (value: T) => string | number) => void}\n */\nexport function useDebugValue(value, formatter) {\n\tif (options.useDebugValue) {\n\t\toptions.useDebugValue(formatter ? formatter(value) : value);\n\t}\n}\n\n/**\n * @param {(error: any) => void} cb\n */\nexport function useErrorBoundary(cb) {\n\t/** @type {import('./internal').ErrorBoundaryHookState} */\n\tconst state = getHookState(currentIndex++, 10);\n\tconst errState = useState();\n\tstate._value = cb;\n\tif (!currentComponent.componentDidCatch) {\n\t\tcurrentComponent.componentDidCatch = err => {\n\t\t\tif (state._value) state._value(err);\n\t\t\terrState[1](err);\n\t\t};\n\t}\n\treturn [\n\t\terrState[0],\n\t\t() => {\n\t\t\terrState[1](undefined);\n\t\t}\n\t];\n}\n\n/**\n * After paint effects consumer.\n */\nfunction flushAfterPaintEffects() {\n\tlet component;\n\twhile ((component = afterPaintEffects.shift())) {\n\t\tif (!component._parentDom) continue;\n\t\ttry {\n\t\t\tcomponent.__hooks._pendingEffects.forEach(invokeCleanup);\n\t\t\tcomponent.__hooks._pendingEffects.forEach(invokeEffect);\n\t\t\tcomponent.__hooks._pendingEffects = [];\n\t\t} catch (e) {\n\t\t\tcomponent.__hooks._pendingEffects = [];\n\t\t\toptions._catchError(e, component._vnode);\n\t\t}\n\t}\n}\n\nlet HAS_RAF = typeof requestAnimationFrame == 'function';\n\n/**\n * Schedule a callback to be invoked after the browser has a chance to paint a new frame.\n * Do this by combining requestAnimationFrame (rAF) + setTimeout to invoke a callback after\n * the next browser frame.\n *\n * Also, schedule a timeout in parallel to the the rAF to ensure the callback is invoked\n * even if RAF doesn't fire (for example if the browser tab is not visible)\n *\n * @param {() => void} callback\n */\nfunction afterNextFrame(callback) {\n\tconst done = () => {\n\t\tclearTimeout(timeout);\n\t\tif (HAS_RAF) cancelAnimationFrame(raf);\n\t\tsetTimeout(callback);\n\t};\n\tconst timeout = setTimeout(done, RAF_TIMEOUT);\n\n\tlet raf;\n\tif (HAS_RAF) {\n\t\traf = requestAnimationFrame(done);\n\t}\n}\n\n// Note: if someone used options.debounceRendering = requestAnimationFrame,\n// then effects will ALWAYS run on the NEXT frame instead of the current one, incurring a ~16ms delay.\n// Perhaps this is not such a big deal.\n/**\n * Schedule afterPaintEffects flush after the browser paints\n * @param {number} newQueueLength\n */\nfunction afterPaint(newQueueLength) {\n\tif (newQueueLength === 1 || prevRaf !== options.requestAnimationFrame) {\n\t\tprevRaf = options.requestAnimationFrame;\n\t\t(prevRaf || afterNextFrame)(flushAfterPaintEffects);\n\t}\n}\n\n/**\n * @param {import('./internal').EffectHookState} hook\n */\nfunction invokeCleanup(hook) {\n\t// A hook cleanup can introduce a call to render which creates a new root, this will call options.vnode\n\t// and move the currentComponent away.\n\tconst comp = currentComponent;\n\tlet cleanup = hook._cleanup;\n\tif (typeof cleanup == 'function') {\n\t\thook._cleanup = undefined;\n\t\tcleanup();\n\t}\n\tcurrentComponent = comp;\n}\n\n/**\n * Invoke a Hook's effect\n * @param {import('./internal').EffectHookState} hook\n */\nfunction invokeEffect(hook) {\n\t// A hook call can introduce a call to render which creates a new root, this will call options.vnode\n\t// and move the currentComponent away.\n\tconst comp = currentComponent;\n\thook._cleanup = hook._value();\n\tcurrentComponent = comp;\n}\n\n/**\n * @param {any[]} oldArgs\n * @param {any[]} newArgs\n */\nfunction argsChanged(oldArgs, newArgs) {\n\treturn (\n\t\t!oldArgs ||\n\t\toldArgs.length !== newArgs.length ||\n\t\tnewArgs.some((arg, index) => arg !== oldArgs[index])\n\t);\n}\n\nfunction invokeOrReturn(arg, f) {\n\treturn typeof f == 'function' ? 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