declare module 'events' { interface EventEmitterOptions { /** * Enables automatic capturing of promise rejection. */ captureRejections?: boolean; } interface NodeEventTarget { once(event: string | symbol, listener: (...args: any[]) => void): this; } interface DOMEventTarget { addEventListener(event: string, listener: (...args: any[]) => void, opts?: { once: boolean }): any; } interface StaticEventEmitterOptions { signal?: AbortSignal; } interface EventEmitter extends NodeJS.EventEmitter {} class EventEmitter { constructor(options?: EventEmitterOptions); static once(emitter: NodeEventTarget, event: string | symbol, options?: StaticEventEmitterOptions): Promise; static once(emitter: DOMEventTarget, event: string, options?: StaticEventEmitterOptions): Promise; static on(emitter: NodeJS.EventEmitter, event: string, options?: StaticEventEmitterOptions): AsyncIterableIterator; /** @deprecated since v4.0.0 */ static listenerCount(emitter: NodeJS.EventEmitter, event: string | symbol): number; /** * Returns a list listener for a specific emitter event name. */ static getEventListener(emitter: DOMEventTarget | NodeJS.EventEmitter, name: string | symbol): Function[]; /** * This symbol shall be used to install a listener for only monitoring `'error'` * events. Listeners installed using this symbol are called before the regular * `'error'` listeners are called. * * Installing a listener using this symbol does not change the behavior once an * `'error'` event is emitted, therefore the process will still crash if no * regular `'error'` listener is installed. */ static readonly errorMonitor: unique symbol; static readonly captureRejectionSymbol: unique symbol; /** * Sets or gets the default captureRejection value for all emitters. */ // TODO: These should be described using static getter/setter pairs: static captureRejections: boolean; static defaultMaxListeners: number; } import internal = require('events'); namespace EventEmitter { // Should just be `export { EventEmitter }`, but that doesn't work in TypeScript 3.4 export { internal as EventEmitter }; export interface Abortable { /** * When provided the corresponding `AbortController` can be used to cancel an asynchronous action. */ signal?: AbortSignal; } } global { namespace NodeJS { interface EventEmitter { addListener(event: string | symbol, listener: (...args: any[]) => void): this; on(event: string | symbol, listener: (...args: any[]) => void): this; once(event: string | symbol, listener: (...args: any[]) => void): this; removeListener(event: string | symbol, listener: (...args: any[]) => void): this; off(event: string | symbol, listener: (...args: any[]) => void): this; removeAllListeners(event?: string | symbol): this; setMaxListeners(n: number): this; getMaxListeners(): number; listeners(event: string | symbol): Function[]; rawListeners(event: string | symbol): Function[]; emit(event: string | symbol, ...args: any[]): boolean; listenerCount(event: string | symbol): number; // Added in Node 6... prependListener(event: string | symbol, listener: (...args: any[]) => void): this; prependOnceListener(event: string | symbol, listener: (...args: any[]) => void): this; eventNames(): Array; } } } export = EventEmitter; }