/**
 *  This function should be called as part of beforeAll so that it can register a global OnError handler.  By default, this
 *  error handler will fail any test cases that have observed error output.  This prevents certain classes of "ignored" errors
 *  from sneaking through.
 */
export declare function setupErrorWatcher(): void;
export declare function enableErrorWatcher(): void;
/**
 * This function should only be called by test cases that are intentionally introducing error scenarios.
 * It disables automatically
 * failing the test if an error is observed.
 */
export declare function disableErrorWatcher(): void;
