export type ErrorSink = (message: string, stack: string | null) => void;
/** Extracts message/stack from whatever the runtime hands us. */
export declare function describeError(error: unknown): {
    message: string;
    stack: string | null;
};
/**
 * Uncaught JS exceptions: chain into RN's ErrorUtils global handler.
 * Unhandled promise rejections: Hermes' rejection tracker (RN's default engine).
 * Native crashes are covered separately by the native ErrorMonitor.
 */
export declare function installErrorMonitor(sink: ErrorSink, g?: any): void;