import { CoreCallbackEvent, FxError } from "@microsoft/teamsfx-api";
export declare type CoreCallbackFunc = (name: string, err?: FxError, data?: any) => void | Promise<void>;
export declare class CallbackRegistry {
    private static registry;
    static has(event: CoreCallbackEvent): boolean;
    static set(event: CoreCallbackEvent, func: CoreCallbackFunc): void;
    static get(event: CoreCallbackEvent): CoreCallbackFunc[];
    static refresh(): void;
}
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