made with esnextbin
Created
July 21, 2016 13:53
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esnextbin sketch
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| <!doctype html> | |
| <html> | |
| <head> | |
| <meta charset="utf-8"> | |
| <title>ESNextbin Sketch</title> | |
| <!-- put additional styles and scripts here --> | |
| </head> | |
| <body> | |
| <div id="app"></div> | |
| <!-- put markup and other contents here --> | |
| </body> | |
| </html> |
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| import React from 'react'; | |
| import { render } from 'react-dom'; | |
| function Whatever() { | |
| return <div>hello</div>; | |
| } | |
| console.log(Whatever.prototype); | |
| const withKeys = (Component, keys = []) => class PureComponent extends React.Component { | |
| constructor() { | |
| super(); | |
| this.isReactComponent = ( | |
| Component && | |
| Component.prototype && | |
| Component.prototype.isReactComponent | |
| ); | |
| } | |
| shouldComponentUpdate(nextProps) { | |
| return keys.some(key => this.props[key] !== nextProps[key]); | |
| } | |
| render() { | |
| return this.isReactComponent ? <Component {...this.props} /> : Component(this.props); | |
| } | |
| }; | |
| export default withKeys; | |
| class Test extends React.Component { | |
| render() { | |
| return <div>hello</div> | |
| } | |
| } | |
| const T = withKeys(Test, ["hello"]); | |
| render(<T />, document.getElementById('app')); |
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| { | |
| "name": "esnextbin-sketch", | |
| "version": "0.0.0", | |
| "dependencies": { | |
| "react": "15.2.1", | |
| "react-dom": "15.2.1", | |
| "babel-runtime": "6.9.2" | |
| } | |
| } |
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| 'use strict'; | |
| Object.defineProperty(exports, "__esModule", { | |
| value: true | |
| }); | |
| var _getPrototypeOf = require('babel-runtime/core-js/object/get-prototype-of'); | |
| var _getPrototypeOf2 = _interopRequireDefault(_getPrototypeOf); | |
| var _classCallCheck2 = require('babel-runtime/helpers/classCallCheck'); | |
| var _classCallCheck3 = _interopRequireDefault(_classCallCheck2); | |
| var _createClass2 = require('babel-runtime/helpers/createClass'); | |
| var _createClass3 = _interopRequireDefault(_createClass2); | |
| var _possibleConstructorReturn2 = require('babel-runtime/helpers/possibleConstructorReturn'); | |
| var _possibleConstructorReturn3 = _interopRequireDefault(_possibleConstructorReturn2); | |
| var _inherits2 = require('babel-runtime/helpers/inherits'); | |
| var _inherits3 = _interopRequireDefault(_inherits2); | |
| var _react = require('react'); | |
| var _react2 = _interopRequireDefault(_react); | |
| var _reactDom = require('react-dom'); | |
| function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } | |
| function Whatever() { | |
| return _react2.default.createElement( | |
| 'div', | |
| null, | |
| 'hello' | |
| ); | |
| } | |
| console.log(Whatever.prototype); | |
| var withKeys = function withKeys(Component) { | |
| var keys = arguments.length <= 1 || arguments[1] === undefined ? [] : arguments[1]; | |
| return function (_React$Component) { | |
| (0, _inherits3.default)(PureComponent, _React$Component); | |
| function PureComponent() { | |
| (0, _classCallCheck3.default)(this, PureComponent); | |
| var _this = (0, _possibleConstructorReturn3.default)(this, (0, _getPrototypeOf2.default)(PureComponent).call(this)); | |
| _this.isReactComponent = Component && Component.prototype && Component.prototype.isReactComponent; | |
| return _this; | |
| } | |
| (0, _createClass3.default)(PureComponent, [{ | |
| key: 'shouldComponentUpdate', | |
| value: function shouldComponentUpdate(nextProps) { | |
| var _this2 = this; | |
| return keys.some(function (key) { | |
| return _this2.props[key] !== nextProps[key]; | |
| }); | |
| } | |
| }, { | |
| key: 'render', | |
| value: function render() { | |
| return this.isReactComponent ? _react2.default.createElement(Component, this.props) : Component(this.props); | |
| } | |
| }]); | |
| return PureComponent; | |
| }(_react2.default.Component); | |
| }; | |
| exports.default = withKeys; | |
| var Test = function (_React$Component2) { | |
| (0, _inherits3.default)(Test, _React$Component2); | |
| function Test() { | |
| (0, _classCallCheck3.default)(this, Test); | |
| return (0, _possibleConstructorReturn3.default)(this, (0, _getPrototypeOf2.default)(Test).apply(this, arguments)); | |
| } | |
| (0, _createClass3.default)(Test, [{ | |
| key: 'render', | |
| value: function render() { | |
| return _react2.default.createElement( | |
| 'div', | |
| null, | |
| 'hello' | |
| ); | |
| } | |
| }]); | |
| return Test; | |
| }(_react2.default.Component); | |
| var T = withKeys(Test, ["hello"]); | |
| (0, _reactDom.render)(_react2.default.createElement(T, null), document.getElementById('app')); |
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