export interface EmitMessage {
    topic: string;
    [key: string]: any;
}
export interface EmittedMessage extends EmitMessage {
    subscriptionTopic: string;
}
export declare type HandlerFunction<TContext> = (this: EmitterListener<TContext>, message: EmittedMessage, context?: TContext) => Promise<void>;
declare class EmitterListener<TContext = any> {
    private _id;
    private _fn;
    private _context;
    private _once;
    private _topic;
    constructor(topic: string, fn: HandlerFunction<TContext>, context: TContext, once?: boolean);
    static isValid(id: string): boolean;
    get id(): string;
    get fn(): HandlerFunction<TContext>;
    get context(): any;
    get once(): boolean;
    get topic(): string;
}
export default EmitterListener;
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