@microsoft/teams.common
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{"version":3,"sources":["../../src/events/event-emitter.ts"],"names":[],"mappings":"AAmBO,MAAM,YAAA,CAE0B;AAAA;AAAA;AAAA;AAAA;AAAA,EAoBrC,YAA+B,MAAA,EAA8B;AAA9B,IAAA,IAAA,CAAA,MAAA,GAAA,MAAA;AAAA,EAAgC;AAAA,EAAhC,MAAA;AAAA,EAnBrB,KAAA,GAAgB,EAAA;AAAA,EAChB,aAAA,uBAMF,GAAA,EAMN;AAAA,EAQF,EAAA,CACE,OACA,OAAA,EACQ;AACR,IAAA,MAAM,EAAA,GAAK,EAAE,IAAA,CAAK,KAAA;AAClB,IAAA,MAAM,OAAO,IAAA,CAAK,aAAA,CAAc,GAAA,CAAI,KAAK,KAAK,EAAC;AAC/C,IAAA,IAAA,CAAK,IAAA,CAAK,EAAE,EAAA,EAAI,OAAA,EAAS,CAAA;AACzB,IAAA,IAAA,CAAK,aAAA,CAAc,GAAA,CAAI,KAAA,EAAO,IAAI,CAAA;AAClC,IAAA,OAAO,EAAA;AAAA,EACT;AAAA,EAEA,IAAA,CACE,OACA,OAAA,EACQ;AACR,IAAA,MAAM,EAAA,GAAK,IAAA,CAAK,EAAA,CAAG,KAAA,EAAO,CAAC,KAAA,KAAU;AACnC,MAAA,IAAA,CAAK,IAAI,EAAE,CAAA;AAEX,MAAA,OAAO,QAAQ,KAAK,CAAA;AAAA,IACtB,CAAC,CAAA;AAED,IAAA,OAAO,EAAA;AAAA,EACT;AAAA,EAEA,IAAI,EAAA,EAAkB;AACpB,IAAA,KAAA,MAAW,CAAC,CAAA,EAAG,IAAI,KAAK,IAAA,CAAK,aAAA,CAAc,SAAQ,EAAG;AACpD,MAAA,MAAM,IAAI,IAAA,CAAK,SAAA,CAAU,CAAC,CAAA,KAAM,CAAA,CAAE,OAAO,EAAE,CAAA;AAE3C,MAAA,IAAI,MAAM,EAAA,EAAI;AAEd,MAAA,IAAA,CAAK,MAAA,CAAO,GAAG,CAAC,CAAA;AAChB,MAAA;AAAA,IACF;AAAA,EACF;AAAA,EAEA,IAAA,CACE,OACA,KAAA,EACM;AACN,IAAA,MAAM,OAAO,IAAA,CAAK,aAAA,CAAc,GAAA,CAAI,KAAK,KAAK,EAAC;AAE/C,IAAA,KAAA,MAAW,OAAO,IAAA,EAAM;AACtB,MAAA,GAAA,CAAI,QAAQ,KAAK,CAAA;AAAA,IACnB;AAAA,EACF;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA;AAAA,EAcA,MAAM,SAAA,CACJ,KAAA,EACA,KAAA,EACe;AAGf,IAAA,MAAM,IAAA,GAAO,CAAC,GAAI,IAAA,CAAK,cAAc,GAAA,CAAI,KAAK,CAAA,IAAK,EAAG,CAAA;AACtD,IAAA,MAAM,UAAgC,EAAC;AAEvC,IAAA,KAAA,MAAW,OAAO,IAAA,EAAM;AACtB,MAAA,IAAI;AACF,QAAA,MAAM,MAAA,GAAS,GAAA,CAAI,OAAA,CAAQ,KAAK,CAAA;AAEhC,QAAA,IAAI,MAAA,EAAQ;AACV,UAAA,OAAA,CAAQ,KAAK,MAAM,CAAA;AAAA,QACrB;AAAA,MACF,SAAS,GAAA,EAAK;AACZ,QAAA,IAAA,CAAK,kBAAA,CAAmB,OAAO,GAAG,CAAA;AAAA,MACpC;AAAA,IACF;AAEA,IAAA,MAAM,OAAA,GAAU,MAAM,OAAA,CAAQ,UAAA,CAAW,OAAO,CAAA;AAEhD,IAAA,KAAA,MAAW,UAAU,OAAA,EAAS;AAC5B,MAAA,IAAI,MAAA,CAAO,WAAW,UAAA,EAAY;AAChC,QAAA,IAAA,CAAK,kBAAA,CAAmB,KAAA,EAAO,MAAA,CAAO,MAAM,CAAA;AAAA,MAC9C;AAAA,IACF;AAAA,EACF;AAAA,EAEQ,kBAAA,CAAmB,OAAyB,GAAA,EAAoB;AACtE,IAAA,MAAM,OAAA,GAAU,CAAA,0BAAA,EAA6B,MAAA,CAAO,KAAK,CAAC,CAAA,CAAA,CAAA;AAE1D,IAAA,IAAI,KAAK,MAAA,EAAQ;AACf,MAAA,IAAA,CAAK,MAAA,CAAO,KAAA,CAAM,OAAA,EAAS,GAAG,CAAA;AAC9B,MAAA;AAAA,IACF;AAEA,IAAA,OAAA,CAAQ,KAAA,CAAM,SAAS,GAAG,CAAA;AAAA,EAC5B;AACF","file":"event-emitter.mjs","sourcesContent":["import type { ILogger } from '../logging/logger';\n\nexport type EventHandler<T = any> = (data: T) => void | Promise<void>;\nexport interface IEventEmitter<EventTypes = Record<string, any>> {\n on<Event extends keyof EventTypes>(\n event: Event,\n handler: EventHandler<EventTypes[Event]>,\n ): number;\n once<Event extends keyof EventTypes>(\n event: Event,\n handler: EventHandler<EventTypes[Event]>,\n ): number;\n off(id: number): void;\n emit<Event extends keyof EventTypes>(\n event: Event,\n value: EventTypes[Event],\n ): void;\n}\n\nexport class EventEmitter<\n EventTypes = Record<string, any>,\n> implements IEventEmitter<EventTypes> {\n protected index: number = -1;\n protected subscriptions: Map<\n keyof EventTypes,\n Array<{\n readonly id: number;\n readonly handler: EventHandler;\n }>\n > = new Map<\n keyof EventTypes,\n Array<{\n readonly id: number;\n readonly handler: EventHandler;\n }>\n >();\n\n /**\n * @param logger Used to report handler failures from {@link emitAsync}.\n * Defaults to `console` when omitted, so failures are never silent.\n */\n constructor(protected readonly logger?: ILogger | undefined) { }\n\n on<Event extends keyof EventTypes>(\n event: Event,\n handler: EventHandler<EventTypes[Event]>,\n ): number {\n const id = ++this.index;\n const subs = this.subscriptions.get(event) || [];\n subs.push({ id, handler });\n this.subscriptions.set(event, subs);\n return id;\n }\n\n once<Event extends keyof EventTypes>(\n event: Event,\n handler: EventHandler<EventTypes[Event]>,\n ): number {\n const id = this.on(event, (value) => {\n this.off(id);\n // Returned so `emitAsync` can await an async one-shot handler.\n return handler(value);\n });\n\n return id;\n }\n\n off(id: number): void {\n for (const [_, subs] of this.subscriptions.entries()) {\n const i = subs.findIndex((s) => s.id === id);\n\n if (i === -1) continue;\n\n subs.splice(i, 1);\n return;\n }\n }\n\n emit<Event extends keyof EventTypes>(\n event: Event,\n value: EventTypes[Event],\n ): void {\n const subs = this.subscriptions.get(event) || [];\n\n for (const sub of subs) {\n sub.handler(value);\n }\n }\n\n /**\n * Emit an event and wait for every subscribed handler to settle.\n *\n * Handlers are started in subscription order and then awaited together, so\n * async handlers run concurrently. Use this instead of `emit` when the\n * emitter must not continue until async listeners have finished — for\n * example when those listeners touch resources that are torn down once the\n * emitting operation returns.\n *\n * A handler that throws or rejects is logged and does not stop the other\n * handlers; this never rejects.\n */\n async emitAsync<Event extends keyof EventTypes>(\n event: Event,\n value: EventTypes[Event],\n ): Promise<void> {\n // Snapshot so a `once` handler unsubscribing itself mid-emit cannot shift\n // the list out from under the loop.\n const subs = [...(this.subscriptions.get(event) || [])];\n const pending: Array<Promise<void>> = [];\n\n for (const sub of subs) {\n try {\n const result = sub.handler(value);\n\n if (result) {\n pending.push(result);\n }\n } catch (err) {\n this.reportHandlerError(event, err);\n }\n }\n\n const results = await Promise.allSettled(pending);\n\n for (const result of results) {\n if (result.status === 'rejected') {\n this.reportHandlerError(event, result.reason);\n }\n }\n }\n\n private reportHandlerError(event: keyof EventTypes, err: unknown): void {\n const message = `event handler failed for \"${String(event)}\"`;\n\n if (this.logger) {\n this.logger.error(message, err);\n return;\n }\n\n console.error(message, err);\n }\n}\n"]}