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{"version":3,"file":"abort-controller.mjs","sources":["../src/abort-signal.ts","../src/abort-controller.ts"],"sourcesContent":["import {\n    // Event,\n    EventTarget,\n    // Type,\n    defineEventAttribute,\n} from \"event-target-shim\"\n\n// Known Limitation\n//   Use `any` because the type of `AbortSignal` in `lib.dom.d.ts` is wrong and\n//   to make assignable our `AbortSignal` into that.\n//   https://github.com/Microsoft/TSJS-lib-generator/pull/623\ntype Events = {\n    abort: any // Event & Type<\"abort\">\n}\ntype EventAttributes = {\n    onabort: any // Event & Type<\"abort\">\n}\n\n/**\n * The signal class.\n * @see https://dom.spec.whatwg.org/#abortsignal\n */\nexport default class AbortSignal extends EventTarget<Events, EventAttributes> {\n    /**\n     * AbortSignal cannot be constructed directly.\n     */\n    public constructor() {\n        super()\n        throw new TypeError(\"AbortSignal cannot be constructed directly\")\n    }\n\n    /**\n     * Returns `true` if this `AbortSignal`'s `AbortController` has signaled to abort, and `false` otherwise.\n     */\n    public get aborted(): boolean {\n        const aborted = abortedFlags.get(this)\n        if (typeof aborted !== \"boolean\") {\n            throw new TypeError(\n                `Expected 'this' to be an 'AbortSignal' object, but got ${\n                    this === null ? \"null\" : typeof this\n                }`,\n            )\n        }\n        return aborted\n    }\n}\ndefineEventAttribute(AbortSignal.prototype, \"abort\")\n\n/**\n * Create an AbortSignal object.\n */\nexport function createAbortSignal(): AbortSignal {\n    const signal = Object.create(AbortSignal.prototype)\n    EventTarget.call(signal)\n    abortedFlags.set(signal, false)\n    return signal\n}\n\n/**\n * Abort a given signal.\n */\nexport function abortSignal(signal: AbortSignal): void {\n    if (abortedFlags.get(signal) !== false) {\n        return\n    }\n\n    abortedFlags.set(signal, true)\n    signal.dispatchEvent<\"abort\">({ type: \"abort\" })\n}\n\n/**\n * Aborted flag for each instances.\n */\nconst abortedFlags = new WeakMap<AbortSignal, boolean>()\n\n// Properties should be enumerable.\nObject.defineProperties(AbortSignal.prototype, {\n    aborted: { enumerable: true },\n})\n\n// `toString()` should return `\"[object AbortSignal]\"`\nif (typeof Symbol === \"function\" && typeof Symbol.toStringTag === \"symbol\") {\n    Object.defineProperty(AbortSignal.prototype, Symbol.toStringTag, {\n        configurable: true,\n        value: \"AbortSignal\",\n    })\n}\n","import AbortSignal, { abortSignal, createAbortSignal } from \"./abort-signal\"\n\n/**\n * The AbortController.\n * @see https://dom.spec.whatwg.org/#abortcontroller\n */\nexport default class AbortController {\n    /**\n     * Initialize this controller.\n     */\n    public constructor() {\n        signals.set(this, createAbortSignal())\n    }\n\n    /**\n     * Returns the `AbortSignal` object associated with this object.\n     */\n    public get signal(): AbortSignal {\n        return getSignal(this)\n    }\n\n    /**\n     * Abort and signal to any observers that the associated activity is to be aborted.\n     */\n    public abort(): void {\n        abortSignal(getSignal(this))\n    }\n}\n\n/**\n * Associated signals.\n */\nconst signals = new WeakMap<AbortController, AbortSignal>()\n\n/**\n * Get the associated signal of a given controller.\n */\nfunction getSignal(controller: AbortController): AbortSignal {\n    const signal = signals.get(controller)\n    if (signal == null) {\n        throw new TypeError(\n            `Expected 'this' to be an 'AbortController' object, but got ${\n                controller === null ? 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