javascript - 'react' 导出的函数

Question

import React, { PropTypes } from 'react'

如何查看“react”导出的所有函数？

我查看了 node_modules/dist/react.js 内的文件 react.js 但找不到任何类似 module.exports = PropTypes ;< 的语句...

Answer 1

我正在检查旧版本的 react (15.4.1) 库。

它导出./lib/React。

./lib/React.js 文件有 module.exports = React;

同一文件中的

React对象定义为:

var React = {

  // Modern

  Children: {
    map: ReactChildren.map,
    forEach: ReactChildren.forEach,
    count: ReactChildren.count,
    toArray: ReactChildren.toArray,
    only: onlyChild
  },

  Component: ReactComponent,
  PureComponent: ReactPureComponent,

  createElement: createElement,
  cloneElement: cloneElement,
  isValidElement: ReactElement.isValidElement,

  // Classic

  PropTypes: ReactPropTypes,
  createClass: ReactClass.createClass,
  createFactory: createFactory,
  createMixin: function (mixin) {
    // Currently a noop. Will be used to validate and trace mixins.
    return mixin;
  },

  // This looks DOM specific but these are actually isomorphic helpers
  // since they are just generating DOM strings.
  DOM: ReactDOMFactories,

  version: ReactVersion,

  // Deprecated hook for JSX spread, don't use this for anything.
  __spread: __spread
};

在这里我可以看到它包含 PropTypes 属性，可以使用 import {PropTypes} from 'react' 导入该属性。

<小时/>

注意:

React.PropTypes has moved into a different package since React v15.5. Please use the prop-types library instead.

来源:https://reactjs.org/docs/typechecking-with-proptypes.html