@ozo/react-rock/src/utils/polyfill.js

React 移动端开发脚手架，基于CRA3，通用、开箱即用。

/*
 * required polyfills
 * IE8兼容依赖public/polyfill-ie8.js实现。
 * 用于IE9-11及其他低版本现代浏览器的兼容(多种方法，择优而取)
 * 用法：参见 doc/低版本浏览器兼容.md
 */

/**
 * 方法1：babel自动导入[默认]
 * https://github.com/zloirock/core-js/blob/master/README.md#babelpreset-env
 * 要使用其他方式，需先禁用掉.babelrc中的 useBuiltIns: 'usage'
 */

/**
 * 方法2：dynamic polyfill
 * https://polyfill.io/v3/
 * https://github.com/pascalaoms/dynamic-polyfill
 */

/**
 * 方法3：手动按浏览器版本引入
 * https://github.com/facebook/create-react-app/tree/master/packages/react-app-polyfill
 */
// import 'react-app-polyfill/ie9';
// import 'react-app-polyfill/ie11';

/**
 * 方法4：按需单独引入
 * https://reactjs.org/docs/javascript-environment-requirements.html
 * https://github.com/zloirock/core-js/blob/master/README.md
 */

/** IE9, IE10 and IE11 requires all of the following polyfills. * */
import 'core-js/es6/array';
import 'core-js/es6/map';
import 'core-js/es6/set';
import 'core-js/es7/object';
import 'core-js/es7/promise';
import 'core-js/es6/string';
import 'core-js/es6/symbol';
import 'core-js/es6/object';
import 'core-js/es6/function';
import 'core-js/es6/parse-int';
import 'core-js/es6/parse-float';
import 'core-js/es6/number';
import 'core-js/es6/math';
import 'core-js/es6/date';
import 'core-js/es6/regexp';
import 'core-js/es6/weak-map';

/** IE10 and IE11 requires the following for the Reflect API. */
import 'core-js/es6/reflect';

/** Evergreen browsers require these. * */
// Used for reflect-metadata in JIT. If you use AOT (and only Angular decorators), you can remove.
import 'core-js/es7/reflect';

// Standard now
import 'core-js/fn/array/includes';
import 'core-js/fn/string/includes';
import 'core-js/fn/string/pad-start';
import 'core-js/fn/string/pad-end';
import 'core-js/fn/symbol/async-iterator';
import 'core-js/fn/object/get-own-property-descriptors';
import 'core-js/fn/object/values';
import 'core-js/fn/object/entries';
import 'core-js/fn/promise/finally';
require('raf').polyfill(window);

// CustomEvent() constructor functionality in IE9, IE10, IE11
(function () {
    if (typeof window.CustomEvent === 'function') {
        return false;
    }

    function CustomEvent(event, params) {
        const tParams = params || { bubbles: false, cancelable: false, detail: undefined };
        const evt = document.createEvent('CustomEvent');
        evt.initCustomEvent(event, tParams.bubbles, tParams.cancelable, tParams.detail);
        return evt;
    }

    CustomEvent.prototype = window.Event.prototype;

    window.CustomEvent = CustomEvent;
})();