549 lines
17 KiB
JavaScript
549 lines
17 KiB
JavaScript
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var __defProp = Object.defineProperty;
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var __name = (target, value) => __defProp(target, "name", { value, configurable: true });
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// src/index.ts
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function validateListener(input) {
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if (typeof input !== "function") {
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throw new TypeError(`The listener argument must be a function. Received ${typeof input}`);
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}
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}
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__name(validateListener, "validateListener");
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function validateAbortSignal(input) {
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if (input && !(input instanceof AbortSignal)) {
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throw new TypeError(`The signal option must be an AbortSignal. Received ${input}`);
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}
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}
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__name(validateAbortSignal, "validateAbortSignal");
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function spliceOne(list, index) {
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for (; index + 1 < list.length; index++) {
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list[index] = list[index + 1];
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}
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list.pop();
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}
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__name(spliceOne, "spliceOne");
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function arrayClone(arr) {
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switch (arr.length) {
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case 2:
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return [arr[0], arr[1]];
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case 3:
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return [arr[0], arr[1], arr[2]];
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case 4:
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return [arr[0], arr[1], arr[2], arr[3]];
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case 5:
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return [arr[0], arr[1], arr[2], arr[3], arr[4]];
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case 6:
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return [arr[0], arr[1], arr[2], arr[3], arr[4], arr[5]];
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}
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return arr.slice();
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}
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__name(arrayClone, "arrayClone");
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function identicalSequenceRange(a, b) {
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for (let i = 0; i < a.length - 3; i++) {
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const pos = b.indexOf(a[i]);
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if (pos !== -1) {
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const rest = b.length - pos;
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if (rest > 3) {
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let len = 1;
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const maxLen = Math.min(a.length - i, rest);
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while (maxLen > len && a[i + len] === b[pos + len]) {
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len++;
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}
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if (len > 3) {
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return [len, i];
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}
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}
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}
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}
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return [0, 0];
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}
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__name(identicalSequenceRange, "identicalSequenceRange");
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function enhanceStackTrace(err, own) {
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let ctorInfo = "";
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try {
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const { name } = this.constructor;
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if (name !== "AsyncEventEmitter")
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ctorInfo = ` on ${name} instance`;
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} catch {
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}
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const sep = `
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Emitted 'error' event${ctorInfo} at:
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`;
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const errStack = err.stack.split("\n").slice(1);
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const ownStack = own.stack.split("\n").slice(1);
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const { 0: len, 1: off } = identicalSequenceRange(ownStack, errStack);
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if (len > 0) {
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ownStack.splice(off + 1, len - 2, " [... lines matching original stack trace ...]");
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}
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return err.stack + sep + ownStack.join("\n");
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}
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__name(enhanceStackTrace, "enhanceStackTrace");
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var _AsyncEventEmitter = class _AsyncEventEmitter {
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constructor() {
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this._events = {
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__proto__: null
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};
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this._eventCount = 0;
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this._maxListeners = 10;
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this._internalPromiseMap = /* @__PURE__ */ new Map();
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this._wrapperId = 0n;
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}
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addListener(eventName, listener) {
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validateListener(listener);
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const wrapped = this._wrapListener(eventName, listener, false);
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this._addListener(eventName, wrapped, false);
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return this;
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}
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on(eventName, listener) {
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return this.addListener(eventName, listener);
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}
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once(eventName, listener) {
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validateListener(listener);
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const wrapped = this._wrapListener(eventName, listener, true);
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this._addListener(eventName, wrapped, false);
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return this;
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}
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removeListener(eventName, listener) {
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validateListener(listener);
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const events = this._events;
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const eventList = events[eventName];
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if (eventList === void 0) {
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return this;
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}
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if (eventList === listener || eventList.listener === listener) {
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if (--this._eventCount === 0) {
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this._events = { __proto__: null };
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} else {
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delete events[eventName];
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if (events.removeListener) {
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this.emit("removeListener", eventName, eventList.listener ?? eventList);
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}
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}
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} else if (typeof eventList !== "function") {
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let position = -1;
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for (let i = eventList.length - 1; i >= 0; i--) {
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if (eventList[i] === listener || eventList[i].listener === listener) {
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position = i;
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break;
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}
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}
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if (position < 0) {
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return this;
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}
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if (position === 0) {
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eventList.shift();
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} else {
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spliceOne(eventList, position);
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}
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if (eventList.length === 0) {
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delete events[eventName];
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--this._eventCount;
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}
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if (events.removeListener !== void 0) {
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this.emit("removeListener", eventName, listener);
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}
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}
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return this;
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}
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off(eventName, listener) {
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return this.removeListener(eventName, listener);
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}
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removeAllListeners(event) {
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const events = this._events;
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if (events.removeListener === void 0) {
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if (!event) {
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this._events = { __proto__: null };
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this._eventCount = 0;
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} else if (events[event] !== void 0) {
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if (--this._eventCount === 0) {
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this._events = { __proto__: null };
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} else {
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delete events[event];
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}
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}
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return this;
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}
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if (!event) {
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for (const key of Reflect.ownKeys(events)) {
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if (key === "removeListener") {
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continue;
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}
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this.removeAllListeners(key);
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}
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this.removeAllListeners("removeListener");
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this._events = { __proto__: null };
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this._eventCount = 0;
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return this;
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}
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const listeners = events[event];
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if (typeof listeners === "function") {
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this.removeListener(event, listeners);
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} else if (listeners !== void 0) {
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for (let i = listeners.length - 1; i >= 0; i--) {
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this.removeListener(event, listeners[i]);
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}
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}
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return this;
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}
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setMaxListeners(n) {
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if (typeof n !== "number" || n < 0 || Number.isNaN(n)) {
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throw new RangeError(`Expected to get a non-negative number for "setMaxListeners", got ${n} instead`);
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}
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this._maxListeners = n;
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return this;
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}
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getMaxListeners() {
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return this._maxListeners;
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}
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listeners(eventName) {
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const eventList = this._events[eventName];
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if (eventList === void 0) {
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return [];
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}
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if (typeof eventList === "function") {
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return [eventList.listener ?? eventList];
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}
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const ret = arrayClone(eventList);
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for (let i = 0; i < ret.length; ++i) {
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const orig = ret[i].listener;
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if (typeof orig === "function") {
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ret[i] = orig;
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}
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}
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return ret;
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}
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rawListeners(eventName) {
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const eventList = this._events[eventName];
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if (eventList === void 0) {
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return [];
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}
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if (typeof eventList === "function") {
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return [eventList];
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}
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return arrayClone(eventList);
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}
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emit(eventName, ...args) {
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let doError = eventName === "error";
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const events = this._events;
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if (events !== void 0) {
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doError = doError && events.error === void 0;
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} else if (!doError) {
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return false;
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}
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if (doError) {
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let er;
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if (args.length > 0) {
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er = args[0];
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}
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if (er instanceof Error) {
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try {
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const capture = {};
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Error.captureStackTrace(capture, _AsyncEventEmitter.prototype.emit);
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Object.defineProperty(er, "stack", {
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value: enhanceStackTrace.call(this, er, capture),
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configurable: true
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});
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} catch {
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}
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throw er; // Unhandled 'error' event
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}
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const stringifiedError = String(er);
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const err = new Error(`Unhandled 'error' event emitted, received ${stringifiedError}`);
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err.context = er;
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throw err; // Unhandled 'error' event
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}
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const handlers = events[eventName];
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if (handlers === void 0) {
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return false;
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}
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if (typeof handlers === "function") {
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const result = handlers.apply(this, args);
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if (result !== void 0 && result !== null) {
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handleMaybeAsync(this, result);
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}
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} else {
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const len = handlers.length;
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const listeners = arrayClone(handlers);
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for (let i = 0; i < len; ++i) {
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const result = listeners[i].apply(this, args);
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if (result !== void 0 && result !== null) {
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handleMaybeAsync(this, result);
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}
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}
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}
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return true;
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}
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listenerCount(eventName) {
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const events = this._events;
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if (events === void 0) {
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return 0;
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}
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const eventListeners = events[eventName];
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if (typeof eventListeners === "function") {
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return 1;
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}
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return eventListeners?.length ?? 0;
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}
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prependListener(eventName, listener) {
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validateListener(listener);
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const wrapped = this._wrapListener(eventName, listener, false);
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this._addListener(eventName, wrapped, true);
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return this;
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}
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prependOnceListener(eventName, listener) {
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validateListener(listener);
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const wrapped = this._wrapListener(eventName, listener, true);
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this._addListener(eventName, wrapped, true);
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return this;
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}
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eventNames() {
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return this._eventCount > 0 ? Reflect.ownKeys(this._events) : [];
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}
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async waitForAllListenersToComplete() {
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const promises = [...this._internalPromiseMap.values()];
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if (promises.length === 0) {
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return false;
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}
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await Promise.all(promises);
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return true;
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}
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_addListener(eventName, wrappedListener, prepend) {
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if (this._events.newListener !== void 0) {
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this.emit("newListener", eventName, wrappedListener.listener ?? wrappedListener);
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}
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let existing = this._events[eventName];
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if (existing === void 0) {
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existing = this._events[eventName] = wrappedListener;
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++this._eventCount;
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} else if (typeof existing === "function") {
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existing = this._events[eventName] = prepend ? [wrappedListener, existing] : [existing, wrappedListener];
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} else if (prepend) {
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existing.unshift(wrappedListener);
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} else {
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existing.push(wrappedListener);
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}
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if (this._maxListeners > 0 && existing.length > this._maxListeners && !existing._hasWarnedAboutMaxListeners) {
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existing._hasWarnedAboutMaxListeners = true;
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const warningMessage = [
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`Possible AsyncEventEmitter memory leak detected. ${existing.length} ${String(eventName)} listeners added to ${this.constructor.name}.`,
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`Use emitter.setMaxListeners() to increase the limit.`
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].join(" ");
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console.warn(warningMessage);
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}
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}
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_wrapListener(eventName, listener, once) {
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if (!once) {
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return listener;
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}
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const state = {
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fired: false,
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wrapFn: void 0,
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eventEmitter: this,
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eventName,
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listener
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};
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const aliased = onceWrapper;
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const wrapped = aliased.bind(state);
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wrapped.listener = listener;
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state.wrapFn = wrapped;
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return wrapped;
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}
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static listenerCount(emitter, eventName) {
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return emitter.listenerCount(eventName);
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}
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static async once(emitter, eventName, options = {}) {
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const signal = options?.signal;
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validateAbortSignal(signal);
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if (signal?.aborted) {
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throw new AbortError(void 0, { cause: getReason(signal) });
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}
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return new Promise((resolve, reject) => {
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const errorListener = /* @__PURE__ */ __name((err) => {
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emitter.removeListener(eventName, resolver);
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if (signal) {
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eventTargetAgnosticRemoveListener(emitter, eventName, abortListener);
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}
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reject(err);
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}, "errorListener");
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const resolver = /* @__PURE__ */ __name((...args) => {
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emitter.removeListener("error", errorListener);
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if (signal) {
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eventTargetAgnosticRemoveListener(signal, "abort", abortListener);
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}
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resolve(args);
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}, "resolver");
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emitter.once(eventName, resolver);
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|
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if (eventName !== "error") {
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emitter.once("error", errorListener);
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}
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const abortListener = /* @__PURE__ */ __name(() => {
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eventTargetAgnosticRemoveListener(emitter, eventName, resolver);
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eventTargetAgnosticRemoveListener(emitter, "error", errorListener);
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|
|
reject(new AbortError(void 0, { cause: getReason(signal) }));
|
||
|
|
}, "abortListener");
|
||
|
|
if (signal) {
|
||
|
|
eventTargetAgnosticAddListener(signal, "abort", abortListener, { once: true });
|
||
|
|
}
|
||
|
|
});
|
||
|
|
}
|
||
|
|
static on(emitter, eventName, options = {}) {
|
||
|
|
const signal = options?.signal;
|
||
|
|
validateAbortSignal(signal);
|
||
|
|
if (signal?.aborted) {
|
||
|
|
throw new AbortError(void 0, { cause: getReason(signal) });
|
||
|
|
}
|
||
|
|
const unconsumedEvents = [];
|
||
|
|
const unconsumedPromises = [];
|
||
|
|
let error = null;
|
||
|
|
let finished = false;
|
||
|
|
const abortListener = /* @__PURE__ */ __name(() => {
|
||
|
|
errorHandler(new AbortError(void 0, { cause: getReason(signal) }));
|
||
|
|
}, "abortListener");
|
||
|
|
const eventHandler = /* @__PURE__ */ __name((...args) => {
|
||
|
|
const promise = unconsumedPromises.shift();
|
||
|
|
if (promise) {
|
||
|
|
promise.resolve(createIterResult(args, false));
|
||
|
|
} else {
|
||
|
|
unconsumedEvents.push(args);
|
||
|
|
}
|
||
|
|
}, "eventHandler");
|
||
|
|
const errorHandler = /* @__PURE__ */ __name((err) => {
|
||
|
|
finished = true;
|
||
|
|
const toError = unconsumedPromises.shift();
|
||
|
|
if (toError) {
|
||
|
|
toError.reject(err);
|
||
|
|
} else {
|
||
|
|
error = err;
|
||
|
|
}
|
||
|
|
void iterator.return();
|
||
|
|
}, "errorHandler");
|
||
|
|
const iterator = Object.setPrototypeOf(
|
||
|
|
{
|
||
|
|
next() {
|
||
|
|
const value = unconsumedEvents.shift();
|
||
|
|
if (value) {
|
||
|
|
return Promise.resolve(createIterResult(value, false));
|
||
|
|
}
|
||
|
|
if (error) {
|
||
|
|
const p = Promise.reject(error);
|
||
|
|
error = null;
|
||
|
|
return p;
|
||
|
|
}
|
||
|
|
if (finished) {
|
||
|
|
return Promise.resolve(createIterResult(void 0, true));
|
||
|
|
}
|
||
|
|
return new Promise((resolve, reject) => {
|
||
|
|
unconsumedPromises.push({ resolve, reject });
|
||
|
|
});
|
||
|
|
},
|
||
|
|
return() {
|
||
|
|
emitter.off(eventName, eventHandler);
|
||
|
|
emitter.off("error", errorHandler);
|
||
|
|
if (signal) {
|
||
|
|
eventTargetAgnosticRemoveListener(signal, "abort", abortListener);
|
||
|
|
}
|
||
|
|
finished = true;
|
||
|
|
const doneResult = createIterResult(void 0, true);
|
||
|
|
for (const promise of unconsumedPromises) {
|
||
|
|
promise.resolve(doneResult);
|
||
|
|
}
|
||
|
|
return Promise.resolve(doneResult);
|
||
|
|
},
|
||
|
|
throw(err) {
|
||
|
|
if (!err || !(err instanceof Error)) {
|
||
|
|
throw new TypeError(`Expected Error instance to be thrown in AsyncEventEmitter.AsyncIterator. Got ${err}`);
|
||
|
|
}
|
||
|
|
error = err;
|
||
|
|
emitter.off(eventName, eventHandler);
|
||
|
|
emitter.off("error", errorHandler);
|
||
|
|
},
|
||
|
|
[Symbol.asyncIterator]() {
|
||
|
|
return this;
|
||
|
|
}
|
||
|
|
},
|
||
|
|
AsyncIteratorPrototype
|
||
|
|
);
|
||
|
|
emitter.on(eventName, eventHandler);
|
||
|
|
if (eventName !== "error") {
|
||
|
|
emitter.on("error", errorHandler);
|
||
|
|
}
|
||
|
|
if (signal) {
|
||
|
|
eventTargetAgnosticAddListener(signal, "abort", abortListener);
|
||
|
|
}
|
||
|
|
return iterator;
|
||
|
|
}
|
||
|
|
};
|
||
|
|
__name(_AsyncEventEmitter, "AsyncEventEmitter");
|
||
|
|
var AsyncEventEmitter = _AsyncEventEmitter;
|
||
|
|
function onceWrapper() {
|
||
|
|
if (!this.fired) {
|
||
|
|
this.eventEmitter.removeListener(this.eventName, this.wrapFn);
|
||
|
|
this.fired = true;
|
||
|
|
if (arguments.length === 0) {
|
||
|
|
return this.listener.call(this.eventEmitter);
|
||
|
|
}
|
||
|
|
return this.listener.apply(this.eventEmitter, arguments);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
__name(onceWrapper, "onceWrapper");
|
||
|
|
function getReason(signal) {
|
||
|
|
return signal?.reason;
|
||
|
|
}
|
||
|
|
__name(getReason, "getReason");
|
||
|
|
function eventTargetAgnosticRemoveListener(emitter, name, listener, flags) {
|
||
|
|
if (typeof emitter.off === "function") {
|
||
|
|
emitter.off(name, listener);
|
||
|
|
} else if (typeof emitter.removeEventListener === "function") {
|
||
|
|
emitter.removeEventListener(name, listener, flags);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
__name(eventTargetAgnosticRemoveListener, "eventTargetAgnosticRemoveListener");
|
||
|
|
function eventTargetAgnosticAddListener(emitter, name, listener, flags) {
|
||
|
|
if (typeof emitter.on === "function") {
|
||
|
|
if (flags?.once) {
|
||
|
|
emitter.once(name, listener);
|
||
|
|
} else {
|
||
|
|
emitter.on(name, listener);
|
||
|
|
}
|
||
|
|
} else if (typeof emitter.addEventListener === "function") {
|
||
|
|
emitter.addEventListener(name, listener, flags);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
__name(eventTargetAgnosticAddListener, "eventTargetAgnosticAddListener");
|
||
|
|
var AsyncIteratorPrototype = Object.getPrototypeOf(Object.getPrototypeOf(async function* () {
|
||
|
|
}).prototype);
|
||
|
|
function createIterResult(value, done) {
|
||
|
|
return { value, done };
|
||
|
|
}
|
||
|
|
__name(createIterResult, "createIterResult");
|
||
|
|
var _AbortError = class _AbortError extends Error {
|
||
|
|
constructor(message = "The operation was aborted", options = void 0) {
|
||
|
|
if (options !== void 0 && typeof options !== "object") {
|
||
|
|
throw new TypeError(`Failed to create AbortError: options is not an object or undefined`);
|
||
|
|
}
|
||
|
|
super(message, options);
|
||
|
|
this.code = "ABORT_ERR";
|
||
|
|
this.name = "AbortError";
|
||
|
|
}
|
||
|
|
};
|
||
|
|
__name(_AbortError, "AbortError");
|
||
|
|
var AbortError = _AbortError;
|
||
|
|
function handleMaybeAsync(emitter, result) {
|
||
|
|
try {
|
||
|
|
const fin = result.finally;
|
||
|
|
if (typeof fin === "function") {
|
||
|
|
const promiseId = String(++emitter["_wrapperId"]);
|
||
|
|
emitter["_internalPromiseMap"].set(promiseId, result);
|
||
|
|
fin.call(result, /* @__PURE__ */ __name(function final() {
|
||
|
|
emitter["_internalPromiseMap"].delete(promiseId);
|
||
|
|
}, "final"));
|
||
|
|
}
|
||
|
|
} catch (err) {
|
||
|
|
emitter.emit("error", err);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
__name(handleMaybeAsync, "handleMaybeAsync");
|
||
|
|
export {
|
||
|
|
AbortError,
|
||
|
|
AsyncEventEmitter
|
||
|
|
};
|
||
|
|
//# sourceMappingURL=index.mjs.map
|