react-native/Libraries/Utilities/JSDevSupportModule.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 strict-local
 */

import NativeJSDevSupport from './NativeJSDevSupport';
const ReactNative = require('../Renderer/shims/ReactNative');

const JSDevSupportModule = {
  getJSHierarchy: function (tag: number) {
    if (NativeJSDevSupport) {
      const constants = NativeJSDevSupport.getConstants();
      try {
        const {computeComponentStackForErrorReporting} =
          ReactNative.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED;
        const componentStack = computeComponentStackForErrorReporting(tag);
        if (!componentStack) {
          NativeJSDevSupport.onFailure(
            constants.ERROR_CODE_VIEW_NOT_FOUND,
            "Component stack doesn't exist for tag " + tag,
          );
        } else {
          NativeJSDevSupport.onSuccess(componentStack);
        }
      } catch (e) {
        NativeJSDevSupport.onFailure(constants.ERROR_CODE_EXCEPTION, e.message);
      }
    }
  },
};

module.exports = JSDevSupportModule;