react/packages/shared/getComponentName.js

27 lines
558 B
JavaScript

/**
* 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.
*
* @providesModule getComponentName
* @flow
*/
'use strict';
import type {Fiber} from 'ReactFiber';
function getComponentName(fiber: Fiber): string | null {
const {type} = fiber;
if (typeof type === 'string') {
return type;
}
if (typeof type === 'function') {
return type.displayName || type.name;
}
return null;
}
module.exports = getComponentName;