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type { ConfigureOptions } from './api/configureIdleTask';\nimport type { IdleTaskKey } from './api/setIdleTask';\nimport type { WaitForIdleTaskOptions } from './api/waitForIdleTask';\n\nexport const rIC =\n typeof requestIdleCallback !== 'undefined'\n ? requestIdleCallback\n : (cb: IdleRequestCallback): ReturnType => {\n const start = Date.now();\n return setTimeout(() => {\n cb({\n didTimeout: false,\n timeRemaining: () => Math.max(0, 50 - (Date.now() - start)),\n });\n }, 1);\n };\n\nexport const cIC =\n typeof cancelIdleCallback !== 'undefined' ? cancelIdleCallback : clearTimeout;\n\nexport type IdleTaskFunction = () => any;\n\ntype PromiseResolveReject = Parameters<\n ConstructorParameters[0]\n>;\n\nexport interface IdleTask extends IdleTaskFunction {\n readonly id: number;\n readonly name: string;\n readonly resolve?: PromiseResolveReject[0];\n readonly reject?: PromiseResolveReject[1];\n readonly revalidateWhenExecuted?: boolean;\n}\n\nexport type ConfigurableWaitForIdleTaskOptions = Pick<\n WaitForIdleTaskOptions,\n 'timeout' | 'timeoutStrategy'\n>;\n\nexport const executeTask = (task: IdleTask): void => {\n const { resolve, reject, revalidateWhenExecuted } = task;\n // reregister a task before executing the task because it may contain `cancelIdleTask` .\n if (revalidateWhenExecuted) {\n idleTaskState.tasks.push(task);\n }\n if (!resolve || !reject) {\n task();\n return;\n }\n try {\n resolve(task());\n } catch (e) {\n reject(e);\n }\n};\n\nexport const resolveTaskResultWhenCancel = (tasks: IdleTask[]): void => {\n for (const task of tasks) {\n task.resolve?.(undefined);\n }\n};\n\nexport const getResultFromCache = (key: IdleTaskKey, isDeleteCache = false) => {\n const result = idleTaskState.idleTaskResultMap.get(key);\n if (isDeleteCache) {\n idleTaskState.idleTaskResultMap.delete(key);\n }\n return result;\n};\n\nexport const defaultWaitForIdleTaskOptions: WaitForIdleTaskOptions = {\n timeoutStrategy: 'forceRun',\n} as const;\n\nconst taskGlobalOptions: ConfigureOptions = {\n debug: false,\n timeoutStrategy: 'forceRun',\n} as const;\n\ninterface IdleTaskState {\n tasks: IdleTask[];\n requestIdleCallbackId: ReturnType;\n taskGlobalOptions: ConfigureOptions;\n idleTaskResultMap: WeakMap>;\n readonly idleTaskRevalidateIntervalMap: Map<\n number,\n ReturnType\n >;\n}\n\nexport const idleTaskState: IdleTaskState = {\n tasks: [],\n requestIdleCallbackId: Number.NaN,\n taskGlobalOptions,\n idleTaskResultMap: new WeakMap(),\n idleTaskRevalidateIntervalMap: new Map(),\n};\n\nexport const removeIdleTaskFromQueue = (taskId: number) => {\n idleTaskState.tasks = idleTaskState.tasks.filter(task => task.id !== taskId);\n return idleTaskState.tasks;\n};\n\nexport const findIdleTasksFromQueue = (taskId: number) =>\n idleTaskState.tasks.filter(task => task.id === taskId);\n","import {\n cIC,\n idleTaskState as its,\n resolveTaskResultWhenCancel,\n} from '../internals';\n\nconst cancelAllIdleTasks = (): void => {\n // delete all revalidateInterval\n Array.from(its.idleTaskRevalidateIntervalMap.values()).forEach(clearInterval);\n its.idleTaskRevalidateIntervalMap.clear();\n resolveTaskResultWhenCancel(its.tasks);\n its.tasks.length = 0;\n // WeakMap has no clear method\n its.idleTaskResultMap = new WeakMap();\n its.requestIdleCallbackId && cIC(its.requestIdleCallbackId as any); // TypeScript Error because requestIdleCallbackId is number | NodeJS.Timeout.\n};\n\nexport default cancelAllIdleTasks;\n","import {\n findIdleTasksFromQueue,\n idleTaskState as its,\n removeIdleTaskFromQueue,\n resolveTaskResultWhenCancel,\n} from '../internals';\nimport type { IdleTaskKey } from './setIdleTask';\n\nconst cancelIdleTask = (key: IdleTaskKey): void => {\n const targetTaskId = key.id;\n // delete revalidateInterval\n const revalidateIntervalId =\n its.idleTaskRevalidateIntervalMap.get(targetTaskId);\n if (revalidateIntervalId) {\n clearInterval(revalidateIntervalId);\n its.idleTaskRevalidateIntervalMap.delete(targetTaskId);\n }\n const tasks = findIdleTasksFromQueue(targetTaskId);\n resolveTaskResultWhenCancel(tasks);\n its.idleTaskResultMap.delete(key);\n removeIdleTaskFromQueue(targetTaskId);\n};\n\nexport default cancelIdleTask;\n","import {\n type ConfigurableWaitForIdleTaskOptions,\n idleTaskState as its,\n} from '../internals';\n\nexport type ConfigureOptions = {\n readonly interval?: number;\n readonly debug?: boolean;\n} & ConfigurableWaitForIdleTaskOptions;\n\nconst configureIdleTask = (options: ConfigureOptions): void => {\n its.taskGlobalOptions = options;\n};\n\nexport default configureIdleTask;\n","import { getResultFromCache, idleTaskState as its } from '../internals';\nimport type { IdleTaskKey } from './setIdleTask';\n\nexport type IdleTaskStatus = 'ready' | 'executed' | 'unknown';\n\nconst getIdleTaskStatus = (key: IdleTaskKey): IdleTaskStatus => {\n if (its.tasks.some(task => task.id === key.id)) {\n return 'ready';\n }\n // We can't know JavaScript Promise states like fulfilled.\n // 'unknown' means that the task was canceled or its result was deleted.\n if (!getResultFromCache(key)) {\n return 'unknown';\n }\n // WARNING: 'executed' means that the task was executed, not completed.\n return 'executed';\n};\n\nexport default getIdleTaskStatus;\n","import {\n executeTask,\n findIdleTasksFromQueue,\n getResultFromCache,\n idleTaskState as its,\n removeIdleTaskFromQueue,\n} from '../internals';\nimport getIdleTaskStatus from './getIdleTaskStatus';\nimport type { IdleTaskKey } from './setIdleTask';\n\nconst forceRunIdleTask = async (key: IdleTaskKey): Promise => {\n const cacheResult = getResultFromCache(key);\n if (getIdleTaskStatus(key) !== 'ready') {\n return cacheResult;\n }\n const targetTaskId = key.id;\n const tasks = findIdleTasksFromQueue(targetTaskId);\n const latestEnqueuedTask = tasks[tasks.length - 1];\n executeTask(latestEnqueuedTask);\n const result = getResultFromCache(key);\n if (latestEnqueuedTask.revalidateWhenExecuted) {\n const latestEnqueuedTaskIndex = its.tasks.length - 1;\n its.tasks = its.tasks.filter(\n (task, index) =>\n index === latestEnqueuedTaskIndex || task.id !== targetTaskId\n );\n } else {\n removeIdleTaskFromQueue(targetTaskId);\n }\n return result;\n};\n\nexport default forceRunIdleTask;\n","import {\n type IdleTask,\n type IdleTaskFunction,\n executeTask,\n idleTaskState as its,\n rIC,\n removeIdleTaskFromQueue,\n} from '../internals';\n\nexport interface IdleTaskKey {\n readonly id: number;\n}\n\nexport interface SetIdleTaskOptions {\n readonly priority?: 'low' | 'high';\n readonly revalidateInterval?: number;\n readonly revalidateWhenExecuted?: boolean;\n readonly taskName?: string;\n readonly overwriteTask?: IdleTaskKey;\n}\n\nconst createTimeRemainingDidTimeout = (): (() => boolean) => {\n const start = performance.now();\n return () => performance.now() - start < 50;\n};\n\ntype LogLevel = 'info' | 'warn';\n\nconst logIdleTask = (message: string, level: LogLevel = 'info'): void => {\n console[level](\n '%cidle-task',\n 'background:#717171;color:white;padding:2px 3px;border-radius:2px;font-size:0.8em;',\n message\n );\n};\n\nconst logCallRequestIdleCallback = (\n reason: 'timeout' | 'idle',\n timeRemaining: number\n) => {\n logIdleTask(\n `Call requestIdleCallback, reason: ${reason}, timeRemaining: ${timeRemaining} ms`\n );\n};\n\nconst getTimeRemainingAndLog = (\n deadline: IdleDeadline\n): readonly [() => boolean, () => void] => {\n const { didTimeout } = deadline;\n if (didTimeout) {\n return [\n createTimeRemainingDidTimeout(),\n () => logCallRequestIdleCallback('timeout', 50),\n ];\n }\n return [\n () => deadline.timeRemaining() > 0,\n () =>\n logCallRequestIdleCallback(\n 'idle',\n normalizeTime(deadline.timeRemaining())\n ),\n ];\n};\n\nconst normalizeTime = (time: number): number => Math.ceil(time * 100) / 100;\n\nconst runIdleTasks = (deadline: IdleDeadline): void => {\n const [isTimeRemaining, log] = getTimeRemainingAndLog(deadline);\n const shouldOutputLog =\n its.taskGlobalOptions.debug && typeof self !== 'undefined';\n shouldOutputLog && log();\n while (isTimeRemaining() && its.tasks.length > 0) {\n const task = its.tasks.shift() as IdleTask;\n if (shouldOutputLog) {\n const start = performance.now();\n executeTask(task);\n const executionTime = normalizeTime(performance.now() - start);\n logIdleTask(\n `Run task, name: ${task.name || 'anonymous'}(id: ${\n task.id\n }), executionTime: ${executionTime} ms`,\n executionTime > 50 ? 'warn' : 'info'\n );\n } else {\n executeTask(task);\n }\n }\n if (its.tasks.length > 0) {\n scheduleIdleTask();\n return;\n }\n its.requestIdleCallbackId = Number.NaN;\n};\n\nconst scheduleIdleTask = () => {\n its.requestIdleCallbackId = rIC(runIdleTasks, {\n timeout: its.taskGlobalOptions.interval,\n });\n};\n\nlet id = 0;\nconst defaultSetIdleTaskOptions: SetIdleTaskOptions = {\n priority: 'low',\n revalidateWhenExecuted: false,\n} as const;\n\nconst setIdleTask = (\n task: IdleTaskFunction,\n options: SetIdleTaskOptions = defaultSetIdleTaskOptions\n): IdleTaskKey => {\n const { overwriteTask } = options;\n const idleTaskKey = overwriteTask ?? Object.freeze({ id: ++id });\n if (overwriteTask) {\n removeIdleTaskFromQueue(idleTaskKey.id);\n }\n let resolve: any;\n let reject: any;\n its.idleTaskResultMap.set(\n idleTaskKey,\n new Promise((res, rej) => {\n resolve = res;\n reject = rej;\n })\n );\n const idleTaskId = idleTaskKey.id;\n const { revalidateInterval } = options;\n const idleTask = Object.defineProperties(() => task(), {\n id: {\n value: idleTaskId,\n },\n name: {\n value: options.taskName || task.name,\n },\n resolve: {\n value: resolve,\n },\n reject: {\n value: reject,\n },\n revalidateWhenExecuted: {\n value: options.revalidateWhenExecuted,\n },\n }) as IdleTask;\n if (revalidateInterval !== undefined) {\n its.idleTaskRevalidateIntervalMap.set(\n idleTaskId,\n setInterval(() => {\n // Low Priority\n its.tasks.push(idleTask);\n its.requestIdleCallbackId || scheduleIdleTask();\n }, revalidateInterval)\n );\n }\n options.priority === 'high'\n ? its.tasks.unshift(idleTask)\n : its.tasks.push(idleTask);\n if (its.requestIdleCallbackId) {\n return idleTaskKey;\n }\n scheduleIdleTask();\n return idleTaskKey;\n};\n\nexport default setIdleTask;\n","import {\n defaultWaitForIdleTaskOptions,\n getResultFromCache,\n idleTaskState as its,\n} from '../internals';\nimport forceRunIdleTask from './forceRunIdleTask';\nimport type { IdleTaskKey } from './setIdleTask';\n\ntype IdleTaskTimeoutStrategy = 'error' | 'forceRun';\n\nexport interface WaitForIdleTaskOptions {\n readonly timeout?: number;\n readonly timeoutStrategy?: IdleTaskTimeoutStrategy;\n}\n\nexport class WaitForIdleTaskTimeoutError extends Error {\n constructor() {\n super('waitForIdleTask timeout.');\n this.name = 'WaitForIdleTaskTimeoutError';\n }\n}\n\nconst waitForIdleTask = async (\n key: IdleTaskKey,\n options?: WaitForIdleTaskOptions\n): Promise => {\n const { timeout: globalTimeout, timeoutStrategy: globalTimeoutStrategy } =\n its.taskGlobalOptions;\n const mergedDefaultOptions = {\n ...defaultWaitForIdleTaskOptions,\n timeout: globalTimeout,\n timeoutStrategy: globalTimeoutStrategy,\n };\n const waitForIdleTaskOptions = options\n ? { ...mergedDefaultOptions, ...options }\n : mergedDefaultOptions;\n const { timeoutStrategy, timeout } = waitForIdleTaskOptions;\n const isForceRun = timeoutStrategy === 'forceRun';\n const result = getResultFromCache(key, !isForceRun);\n if (timeout === undefined && globalTimeout === undefined) {\n return result;\n }\n let isTimeout = false;\n const timeoutPromise = new Promise(resolve => {\n setTimeout(() => {\n isTimeout = true;\n resolve(undefined);\n }, timeout ?? globalTimeout);\n });\n const racedResult = await Promise.race([result, timeoutPromise]);\n if (isTimeout) {\n if (isForceRun) {\n return forceRunIdleTask(key);\n }\n throw new WaitForIdleTaskTimeoutError();\n }\n return racedResult;\n};\n\nexport default waitForIdleTask;\n","import type {\n ConfigurableWaitForIdleTaskOptions,\n IdleTaskFunction,\n} from '../internals';\nimport setIdleTask, { type SetIdleTaskOptions } from './setIdleTask';\nimport waitForIdleTask from './waitForIdleTask';\n\nexport type GetResultFromIdleTaskOptions = Pick<\n SetIdleTaskOptions,\n 'priority' | 'taskName'\n> &\n ConfigurableWaitForIdleTaskOptions;\n\nconst getResultFromIdleTask = (\n task: IdleTaskFunction,\n options?: GetResultFromIdleTaskOptions\n): ReturnType =>\n waitForIdleTask(\n setIdleTask(task, {\n priority: options?.priority,\n taskName: options?.taskName,\n }),\n {\n timeout: options?.timeout,\n timeoutStrategy: options?.timeoutStrategy,\n }\n );\n\nexport default getResultFromIdleTask;\n"]}