angular - Internet Explorer 和 Angular 6 错误错误 : Uncaught (in promise): Error: Loading chunk

Question

我在使用 angular 6 和 IE 11 时遇到问题，应用程序在 chrome 和其他浏览器中运行良好，但在 Internet Explorer 中，我得到了这个

ERROR Error: Uncaught (in promise): Error: Loading chunk default~app-xxxxx~eb5ba6d4 failed. (missing: http://localhost:4200/default~app-xxxx.js) Error: Loading chunk default~app-xxxx~eb5ba6d4 failed. (missing: http://localhost:4200/default~app-xxxx~eb5ba6d4.js)

项目详情

Angular CLI:6.2.3
节点:8.12.0
操作系统:win32 x64
Angular :
...

套餐版本

@angular-devkit/architect 0.8.3 @angular-devkit/core 0.8.3 @angular-devkit/schematics 0.8.3 @schematics/angular 0.8.3 @schematics/update 0.8.3 rxjs 6.2.2 typescript 2.9.2

我的应用程序路由是

const routes: Routes = [
    {
        path: '',
        loadChildren:  'app/content/pages/pages.module#PagesModule'

    },
    {
        path: 'layout',
        loadChildren: 'app/content/layout/layout.module#LayoutModule',      
    },
    {
        path: '**',
        redirectTo: ''
    }
];

Answer 1

投入几个小时后终于找到了我的解决方案
关于 promise((t,n) => 的问题，

首先，打开 src/polyfills.ts 文件，并取消注释

/** IE9, IE10 and IE11 requires all of the following polyfills. **/
// 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/weak-map';
// import 'core-js/es6/set';

=> lambda 表达式在 IE 中不支持，所以我们可以用代码 function() 代替这个表达式。

安装一些包

npm install --save web-animations-js

npm install --save classlist.js

然后我从 npm 包 (fuctbase64/index.js) 之一中发现了 promise 问题

module.exports = function (event) {
  return new Promise((resolve, reject) => {
    let reader = new FileReader();
    let files = event.target.files;
    let len = files.length;
    if (len > 1) {
      reject(new DOMException("Only one file can be uploaded at a time"));
    } else {
      reader.onerror = () => {
        reader.abort();
        reject(new DOMException("Problem parsing input file."));
      };
      let file = files[0]
      reader.onload = (evt) => {
        const uint = new Uint8Array(evt.target.result);
        let bytes = [];
        uint.map(byte => {
          bytes.push(byte.toString(16));
        });
        const hex = bytes.join('').toUpperCase();
        let base64 = reader.result.split(',')[1];
        file.base64 = base64;
        file.binaryFileType = getMimetype(hex);
        resolve(file);
      };
      reader.readAsDataURL(file);
    }
  });
}

将代码替换为

module.exports = function (event) {
  return new Promise(function(resolve, reject)  {
    let reader = new FileReader();
    let files = event.target.files;
    let len = files.length;
    if (len > 1) {
      reject(new DOMException("Only one file can be uploaded at a time"));
    } else {
      reader.onerror = function() {
        reader.abort();
        reject(new DOMException("Problem parsing input file."));
      };
      let file = files[0]
      reader.onload = function(evt){
        const uint = new Uint8Array(evt.target.result);
        let bytes = [];
        uint.map(function(byte) {
          bytes.push(byte.toString(16));
        });
        const hex = bytes.join('').toUpperCase();
        let base64 = reader.result.split(',')[1];
        file.base64 = base64;
        file.binaryFileType = getMimetype(hex);
        resolve(file);
      };
      reader.readAsDataURL(file);
    }
  });
}