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https://gitee.com/myxzgzs/boyue_jnpf.git
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63 lines
2.5 KiB
JavaScript
63 lines
2.5 KiB
JavaScript
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"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.AsyncEventEmitter = void 0;
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const builder_util_1 = require("builder-util");
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const builder_util_runtime_1 = require("builder-util-runtime");
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class AsyncEventEmitter {
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constructor() {
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this.listeners = new Map();
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this.cancellationToken = new builder_util_runtime_1.CancellationToken();
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}
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on(event, listener, type = "system") {
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var _a;
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if (!listener) {
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return this;
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}
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const listeners = (_a = this.listeners.get(event)) !== null && _a !== void 0 ? _a : [];
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listeners.push({ handler: listener, type });
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this.listeners.set(event, listeners);
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return this;
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}
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off(event, listener) {
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var _a;
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const listeners = (_a = this.listeners.get(event)) === null || _a === void 0 ? void 0 : _a.filter(l => l.handler !== listener);
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if (!(listeners === null || listeners === void 0 ? void 0 : listeners.length)) {
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this.listeners.delete(event);
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return this;
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}
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this.listeners.set(event, listeners);
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return this;
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}
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async emit(event, ...args) {
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const result = { emittedSystem: false, emittedUser: false };
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const eventListeners = this.listeners.get(event) || [];
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if (!eventListeners.length) {
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builder_util_1.log.debug({ event }, "no event listeners found");
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return result;
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}
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const emitInternal = async (listeners) => {
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for (const listener of listeners) {
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if (this.cancellationToken.cancelled) {
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return false;
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}
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const handler = await Promise.resolve(listener.handler);
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await Promise.resolve(handler === null || handler === void 0 ? void 0 : handler(...args));
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}
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return true;
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};
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result.emittedSystem = await emitInternal(eventListeners.filter(l => l.type === "system"));
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// user handlers are always last
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result.emittedUser = await emitInternal(eventListeners.filter(l => l.type === "user"));
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return result;
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}
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filterListeners(event, type) {
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var _a;
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const listeners = (_a = this.listeners.get(event)) !== null && _a !== void 0 ? _a : [];
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return type ? listeners.filter(l => l.type === type) : listeners;
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}
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clear() {
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this.listeners.clear();
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}
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}
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exports.AsyncEventEmitter = AsyncEventEmitter;
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//# sourceMappingURL=asyncEventEmitter.js.map
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