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| {"version":3,"file":"index.js","sources":["../src/AbortSignal.ts","../src/AbortController.ts"],"sourcesContent":["// Copyright (c) Microsoft Corporation.\n// Licensed under the MIT license.\n\n// eslint-disable-next-line @typescript-eslint/triple-slash-reference\n/// <reference path=\"../shims-public.d.ts\" />\n\ntype AbortEventListener = (this: AbortSignalLike, ev?: any) => any;\n\nconst listenersMap = new WeakMap<AbortSignal, AbortEventListener[]>();\nconst abortedMap = new WeakMap<AbortSignal, boolean>();\n\n/**\n * Allows the request to be aborted upon firing of the \"abort\" event.\n * Compatible with the browser built-in AbortSignal and common polyfills.\n */\nexport interface AbortSignalLike {\n /**\n * Indicates if the signal has already been aborted.\n */\n readonly aborted: boolean;\n /**\n * Add new \"abort\" event listener, only support \"abort\" event.\n */\n addEventListener(\n type: \"abort\",\n listener: (this: AbortSignalLike, ev: any) => any,\n options?: any\n ): void;\n /**\n * Remove \"abort\" event listener, only support \"abort\" event.\n */\n removeEventListener(\n type: \"abort\",\n listener: (this: AbortSignalLike, ev: any) => any,\n options?: any\n ): void;\n}\n\n/**\n * An aborter instance implements AbortSignal interface, can abort HTTP requests.\n *\n * - Call AbortSignal.none to create a new AbortSignal instance that cannot be cancelled.\n * Use `AbortSignal.none` when you are required to pass a cancellation token but the operation\n * cannot or will not ever be cancelled.\n *\n * @example\n * Abort without timeout\n * ```ts\n * await doAsyncWork(AbortSignal.none);\n * ```\n */\nexport class AbortSignal implements AbortSignalLike {\n constructor() {\n listenersMap.set(this, []);\n abortedMap.set(this, false);\n }\n\n /**\n * Status of whether aborted or not.\n *\n * @readonly\n */\n public get aborted(): boolean {\n if (!abortedMap.has(this)) {\n throw new TypeError(\"Expected `this` to be an instance of AbortSignal.\");\n }\n\n return abortedMap.get(this)!;\n }\n\n /**\n * Creates a new AbortSignal instance that will never be aborted.\n *\n * @readonly\n */\n public static get none(): AbortSignal {\n return new AbortSignal();\n }\n\n /**\n * onabort event listener.\n */\n public onabort: ((ev?: Event) => any) | null = null;\n\n /**\n * Added new \"abort\" event listener, only support \"abort\" event.\n *\n * @param _type - Only support \"abort\" event\n * @param listener - The listener to be added\n */\n public addEventListener(\n // tslint:disable-next-line:variable-name\n _type: \"abort\",\n listener: (this: AbortSignalLike, ev: any) => any\n ): void {\n if (!listenersMap.has(this)) {\n throw new TypeError(\"Expected `this` to be an instance of AbortSignal.\");\n }\n\n const listeners = listenersMap.get(this)!;\n listeners.push(listener);\n }\n\n /**\n * Remove \"abort\" event listener, only support \"abort\" event.\n *\n * @param _type - Only support \"abort\" event\n * @param listener - The listener to be removed\n */\n public removeEventListener(\n // tslint:disable-next-line:variable-name\n _type: \"abort\",\n listener: (this: AbortSignalLike, ev: any) => any\n ): void {\n if (!listenersMap.has(this)) {\n throw new TypeError(\"Expected `this` to be an instance of AbortSignal.\");\n }\n\n const listeners = listenersMap.get(this)!;\n\n const index = listeners.indexOf(listener);\n if (index > -1) {\n listeners.splice(index, 1);\n }\n }\n\n /**\n * Dispatches a synthetic event to the AbortSignal.\n */\n dispatchEvent(_event: Event): boolean {\n throw new Error(\n \"This is a stub dispatchEvent implementation that should not be used. It only exists for type-checking purposes.\"\n );\n }\n}\n\n/**\n * Helper to trigger an abort event immediately, the onabort and all abort event listeners will be triggered.\n * Will try to trigger abort event for all linked AbortSignal nodes.\n *\n * - If there is a timeout, the timer will be cancelled.\n * - If aborted is true, nothing will happen.\n *\n * @internal\n */\n// eslint-disable-next-line @azure/azure-sdk/ts-use-interface-parameters\nexport function abortSignal(signal: AbortSignal): void {\n if (signal.aborted) {\n return;\n }\n\n if (signal.onabort) {\n signal.onabort.call(signal);\n }\n\n const listeners = listenersMap.get(signal)!;\n if (listeners) {\n // Create a copy of listeners so mutations to the array\n // (e.g. via removeListener calls) don't affect the listeners\n // we invoke.\n listeners.slice().forEach((listener) => {\n listener.call(signal, { type: \"abort\" });\n });\n }\n\n abortedMap.set(signal, true);\n}\n","// Copyright (c) Microsoft Corporation.\n// Licensed under the MIT license.\n\nimport { AbortSignal, AbortSignalLike, abortSignal } from \"./AbortSignal\";\n\n/**\n * This error is thrown when an asynchronous operation has been aborted.\n * Check for this error by testing the `name` that the name property of the\n * error matches `\"AbortError\"`.\n *\n * @example\n * ```ts\n * const controller = new AbortController();\n * controller.abort();\n * try {\n * doAsyncWork(controller.signal)\n * } catch (e) {\n * if (e.name === 'AbortError') {\n * // handle abort error here.\n * }\n * }\n * ```\n */\nexport class AbortError extends Error {\n constructor(message?: string) {\n super(message);\n this.name = \"AbortError\";\n }\n}\n\n/**\n * An AbortController provides an AbortSignal and the associated controls to signal\n * that an asynchronous operation should be aborted.\n *\n * @example\n * Abort an operation when another event fires\n * ```ts\n * const controller = new AbortController();\n * const signal = controller.signal;\n * doAsyncWork(signal);\n * button.addEventListener('click', () => controller.abort());\n * ```\n *\n * @example\n * Share aborter cross multiple operations in 30s\n * ```ts\n * // Upload the same data to 2 different data centers at the same time,\n * // abort another when any of them is finished\n * const controller = AbortController.withTimeout(30 * 1000);\n * doAsyncWork(controller.signal).then(controller.abort);\n * doAsyncWork(controller.signal).then(controller.abort);\n *```\n *\n * @example\n * Cascaded aborting\n * ```ts\n * // All operations can't take more than 30 seconds\n * const aborter = Aborter.timeout(30 * 1000);\n *\n * // Following 2 operations can't take more than 25 seconds\n * await doAsyncWork(aborter.withTimeout(25 * 1000));\n * await doAsyncWork(aborter.withTimeout(25 * 1000));\n * ```\n */\nexport class AbortController {\n private _signal: AbortSignal;\n\n /**\n * @param parentSignals - The AbortSignals that will signal aborted on the AbortSignal associated with this controller.\n */\n constructor(parentSignals?: AbortSignalLike[]);\n /**\n * @param parentSignals - The AbortSignals that will signal aborted on the AbortSignal associated with this controller.\n */\n constructor(...parentSignals: AbortSignalLike[]);\n // eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types\n constructor(parentSignals?: any) {\n this._signal = new AbortSignal();\n\n if (!parentSignals) {\n return;\n }\n // coerce parentSignals into an array\n if (!Array.isArray(parentSignals)) {\n // eslint-disable-next-line prefer-rest-params\n parentSignals = arguments;\n }\n for (const parentSignal of parentSignals) {\n // if the parent signal has already had abort() called,\n // then call abort on this signal as well.\n if (parentSignal.aborted) {\n this.abort();\n } else {\n // when the parent signal aborts, this signal should as well.\n parentSignal.addEventListener(\"abort\", () => {\n this.abort();\n });\n }\n }\n }\n\n /**\n * The AbortSignal associated with this controller that will signal aborted\n * when the abort method is called on this controller.\n *\n * @readonly\n */\n public get signal(): AbortSignal {\n return this._signal;\n }\n\n /**\n * Signal that any operations passed this controller's associated abort signal\n * to cancel any remaining work and throw an `AbortError`.\n */\n abort(): void {\n abortSignal(this._signal);\n }\n\n /**\n * Creates a new AbortSignal instance that will abort after the provided ms.\n * @param ms - 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