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51 lines
1.4 KiB
51 lines
1.4 KiB
4 years ago
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export as namespace EventEmitter;
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type ListenerFn = (...args: Array<any>) => void;
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/**
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* Minimal `EventEmitter` interface that is molded against the Node.js
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* `EventEmitter` interface.
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*/
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export class EventEmitter {
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static prefixed: string | boolean;
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/**
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* Return an array listing the events for which the emitter has registered
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* listeners.
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*/
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eventNames(): Array<string | symbol>;
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/**
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* Return the listeners registered for a given event.
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*/
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listeners(event: string | symbol, exists: boolean): Array<ListenerFn> | boolean;
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listeners(event: string | symbol): Array<ListenerFn>;
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/**
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* Calls each of the listeners registered for a given event.
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*/
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emit(event: string | symbol, ...args: Array<any>): boolean;
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/**
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* Add a listener for a given event.
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*/
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on(event: string | symbol, fn: ListenerFn, context?: any): this;
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addListener(event: string | symbol, fn: ListenerFn, context?: any): this;
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/**
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* Add a one-time listener for a given event.
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*/
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once(event: string | symbol, fn: ListenerFn, context?: any): this;
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/**
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* Remove the listeners of a given event.
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*/
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removeListener(event: string | symbol, fn?: ListenerFn, context?: any, once?: boolean): this;
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off(event: string | symbol, fn?: ListenerFn, context?: any, once?: boolean): this;
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/**
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* Remove all listeners, or those of the specified event.
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*/
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removeAllListeners(event?: string | symbol): this;
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}
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