IE11在Angular2(TS)中发布Angular CLI项目,polyfills不工作

时间:2016-12-01 14:16:17

标签: javascript angular typescript angular-cli es5-shim

我正在使用anugular-cli 1.0.0-beta.16,其中包含polyfills.ts,如下所示:

// This file includes polyfills needed by Angular 2 and is loaded before
// the app. You can add your own extra polyfills to this file.
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/string';
import 'core-js/es6/date';
import 'core-js/es6/array';
import 'core-js/es6/regexp';
import 'core-js/es6/map';
import 'core-js/es6/set';
import 'core-js/es6/reflect';

import 'core-js/es7/reflect';
import 'zone.js/dist/zone';

但是这个pollyfills文件无法在IE11上运行,它适用于Chrome,Firefox,EDGE和我的main.ts看起来像这样:

import "./polyfills.ts";
import {platformBrowserDynamic} from "@angular/platform-browser-dynamic";
import {enableProdMode} from "@angular/core";
import {environment} from "./environments/environment";
import {AppModule} from "./app/";

if (environment.production) {
  enableProdMode();
}

platformBrowserDynamic().bootstrapModule(AppModule);

在IE11上运行此操作会在胖箭头表达式错误

上显示错误
SCRIPT1002: Syntax error

对于这个位置的minifiedjs:

function arrayUnion(arr1, arr2) {
    return arr1
        .concat(arr2.filter(v => arr1.indexOf(v) === -1));
}

这就是我的tsconfig.json的样子

    {
  "compilerOptions": {
    "declaration": false,
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "lib": ["es6", "dom"],
    "mapRoot": "./",
    "module": "es6",
    "moduleResolution": "node",
    "outDir": "../dist/out-tsc",
    "sourceMap": true,
    "target": "es5",
    "typeRoots": [
      "../node_modules/@types"
    ]
  }
}

@Cleton这是我的tsconfig的样子

1 个答案:

答案 0 :(得分:3)

您可能正在定位es6,它将箭头功能编译为箭头功能:

let fn = () => console.log("hey");

编译为:

let fn = () => console.log("hey");

但如果你定位es5,它会编译为:

var fn = function () { return console.log("hey"); };

似乎IE11(或任何其他版本的资源管理器)do not yet support arrow functions 如果你想支持它,你必须定位es5或更低,因为箭头功能没有pollyfil。