getComponentNameFromType.js — react Source File

Source Code

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

import type {LazyComponent} from 'react/src/ReactLazy';
import type {ReactContext, ReactConsumerType} from 'shared/ReactTypes';

import {
  REACT_CONTEXT_TYPE,
  REACT_CONSUMER_TYPE,
  REACT_FORWARD_REF_TYPE,
  REACT_FRAGMENT_TYPE,
  REACT_PORTAL_TYPE,
  REACT_MEMO_TYPE,
  REACT_PROFILER_TYPE,
  REACT_STRICT_MODE_TYPE,
  REACT_SUSPENSE_TYPE,
  REACT_SUSPENSE_LIST_TYPE,
  REACT_LAZY_TYPE,
  REACT_TRACING_MARKER_TYPE,
  REACT_VIEW_TRANSITION_TYPE,
  REACT_ACTIVITY_TYPE,
} from 'shared/ReactSymbols';

import {
  enableTransitionTracing,
  enableViewTransition,
} from './ReactFeatureFlags';

// Keep in sync with react-reconciler/getComponentNameFromFiber
function getWrappedName(
  outerType: mixed,
  innerType: any,
  wrapperName: string,
): string {
  const displayName = (outerType: any).displayName;
  if (displayName) {
    return displayName;
  }
  const functionName = innerType.displayName || innerType.name || '';
  return functionName !== '' ? `${wrapperName}(${functionName})` : wrapperName;
}

// Keep in sync with react-reconciler/getComponentNameFromFiber
function getContextName(type: ReactContext<any>) {
  return type.displayName || 'Context';
}

const REACT_CLIENT_REFERENCE = Symbol.for('react.client.reference');

// Note that the reconciler package should generally prefer to use getComponentNameFromFiber() instead.
export default function getComponentNameFromType(type: mixed): string | null {
  if (type == null) {
    // Host root, text node or just invalid type.
    return null;
// ... (75 more lines)