@454creative/easy-events
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A minimal event engine for Node.js and NestJS, wrapping Emmett for lightweight in-process event handling
27 lines • 1.26 kB
TypeScript
import type { EventEngine } from "./event-engine.interface";
import type { ObservabilityEngine, EventTracing } from "./observability.interface";
export declare class EmmettEngine implements EventEngine {
private emitter;
private observability;
private handlerWrappers;
private onceWrappers;
private maxListeners;
constructor(observability?: ObservabilityEngine | undefined);
emit<T = any>(event: string, payload: T, tracing?: EventTracing): void;
on<T = any>(event: string, handler: (payload: T) => void): void;
once<T = any>(event: string, handler: (payload: T) => void): void;
off(event?: string, handler?: (payload: any) => 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;
setObservability(observability: ObservabilityEngine): void;
getObservability(): ObservabilityEngine | undefined;
}
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