@454creative/easy-events/dist/event-engine.interface.d.ts

A minimal event engine for Node.js and NestJS, wrapping Emmett for lightweight in-process event handling

export interface EventEngine {
    emit<T = any>(event: string, payload: T): void;
    on<T = any>(event: string, handler: (payload: T) => void): void;
    off(event?: string, handler?: (payload: any) => void): void;
    once<T = any>(event: string, handler: (payload: T) => void): void;
    listeners(event: string): number;
    removeAllListeners(event?: string): void;
    eventNames(): string[];
    listenerCount(event: string): number;
    prependListener<T = any>(event: string, handler: (payload: T) => void): void;
    setMaxListeners(n: number): void;
    getMaxListeners(): number;
    rawListeners(event: string): Function[];
    hasListeners(event: string): boolean;
    clear(): void;
}
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