export type ActionHandler<TParams = any, TResponse = any> = (params: TParams) => Promise<TResponse> | TResponse;
export type ActionHandlers = Map<string, ActionHandler>;
export declare class CommandFrameProvider<TActions extends object = any> {
    private handlers;
    private origin;
    private isWildcardPattern;
    private debug;
    private destroyed;
    private boundHandleMessage;
    constructor(actions?: TActions, options?: {
        origin?: string;
        debug?: boolean;
    });
    /**
     * Supports "*" (allow all), exact match, and wildcard subdomain
     * patterns like "https://*.example.com".
     */
    private isOriginAllowed;
    register<TParams = any, TResponse = any>(action: string, handler: ActionHandler<TParams, TResponse>): void;
    unregister(action: string): void;
    private handleMessage;
    private sendResponse;
    destroy(): void;
    isDestroyed(): boolean;
}