react-native/Libraries/Core/ReactFiberErrorDialog.js

/**
 * Copyright (c) Facebook, Inc. and its affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 * @format
 * @flow
 */

export type CapturedError = {
  +componentName: ?string,
  +componentStack: string,
  +error: mixed,
  +errorBoundary: ?{...},
  +errorBoundaryFound: boolean,
  +errorBoundaryName: string | null,
  +willRetry: boolean,
  ...
};

import type {ExtendedError} from './Devtools/parseErrorStack';

import {handleException, SyntheticError} from './ExceptionsManager';

/**
 * Intercept lifecycle errors and ensure they are shown with the correct stack
 * trace within the native redbox component.
 */
function showErrorDialog(capturedError: CapturedError): boolean {
  const {componentStack, error} = capturedError;

  let errorToHandle;

  // Typically Errors are thrown but eg strings or null can be thrown as well.
  if (error instanceof Error) {
    errorToHandle = (error: ExtendedError);
  } else if (typeof error === 'string') {
    errorToHandle = (new SyntheticError(error): ExtendedError);
  } else {
    errorToHandle = (new SyntheticError('Unspecified error'): ExtendedError);
  }
  try {
    errorToHandle.componentStack = componentStack;
    errorToHandle.isComponentError = true;
  } catch (e) {}
  handleException(errorToHandle, false);

  // Return false here to prevent ReactFiberErrorLogger default behavior of
  // logging error details to console.error. Calls to console.error are
  // automatically routed to the native redbox controller, which we've already
  // done above by calling ExceptionsManager.
  return false;
}

module.exports = {showErrorDialog};