react/packages/react-native-renderer/src/ReactNativeFiberErrorDialog.js

/**
 * Copyright (c) 2013-present, Facebook, Inc.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 * @flow
 */

'use strict';

import type {CapturedError} from 'react-reconciler/src/ReactFiberScheduler';

// Module provided by RN:
const ExceptionsManager = require('ExceptionsManager');

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

  let errorToHandle: Error;

  // Typically Errors are thrown but eg strings or null can be thrown as well.
  if (error instanceof Error) {
    const {message, name} = error;

    const summary = message ? `${name}: ${message}` : name;

    errorToHandle = error;

    try {
      errorToHandle.message = `${summary}\n\nThis error is located at:${componentStack}`;
    } catch (e) {}
  } else if (typeof error === 'string') {
    errorToHandle = new Error(
      `${error}\n\nThis error is located at:${componentStack}`,
    );
  } else {
    errorToHandle = new Error(`Unspecified error at:${componentStack}`);
  }

  ExceptionsManager.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.showDialog = ReactNativeFiberErrorDialog;