@obsidize/logger/core/event-emitter.d.ts

A tiny javascript logging library

/**
 * Callback that accepts a single value which was
 * emitted from the `EventEmitter` instance.
 */
export type EventEmitterDelegate<T> = (value: T) => any;
/**
 * Lightweight event broadcaster.
 *
 * While this class' primary use in the library is for
 * sending log events to registered listeners, it
 * is defined to be generic, and can technically
 * emit any type of value.
 *
 * Feel free to use this for non-logging things since
 * javascript has no built-in observer pattern...
 */
export declare class EventEmitter<T> {
    private mListeners;
    get listenerCount(): number;
    emit<R extends T = T>(value: R): this;
    hasListener<R extends T = T>(listener: EventEmitterDelegate<R>): boolean;
    addListener<R extends T = T>(listener: EventEmitterDelegate<R>): this;
    removeListener<R extends T = T>(listener: EventEmitterDelegate<R>): this;
    removeAllListeners(): this;
}