typescript 未找到 Angular4.x 模块：错误：无法解析“classlist.js”
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Angular4.x Module not found: Error: Can't resolve 'classlist.js'
提问by MayureshP
When I remove comment part in polyfills.ts for polyfills to load page in Internet Explore
当我删除 polyfills.ts 中的注释部分以便 polyfills 在 Internet Explorer 中加载页面时
/** 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';
import 'reflect-metadata';
/** IE10 and IE11 requires the following for NgClass support on SVG elements */
import 'classlist.js'; // Run `npm install --save classlist.js`.
/** Evergreen browsers require these. **/
import 'core-js/es6/reflect';
import 'core-js/es7/reflect';
/**
* Required to support Web Animations `@angular/animation`.
* Needed for: All but Chrome, Firefox and Opera. http://caniuse.com/#feat=web-animation
**/
import 'web-animations-js'; // Run `npm install --save web-animations-js`.But if we do build using angular cli. it throws error in console I did run this command in project "npm install --save classlist.js"
但是，如果我们确实使用 angular cli 进行构建。它在控制台中抛出错误我确实在项目“npm install --save classlist.js”中运行了这个命令
Module not found: Error: Can't resolve 'classlist.js' in src
@ ./src/polyfills.ts 36:0-22
@ multi ./src/polyfills.ts
Please suggest solution
请提出解决方案
回答by Daniel Netzer
remove the current package,
删除当前包，
npm uninstall classlist.js --save
then run
然后运行
npm cache verify
afterwards run
之后运行
npm install classlist.js --save-exact
回答by Manduro
You're importing a polyfill that is not included by default. You have to install it as a dependency first. How to do that is in a comment on the same line that imports it:
您正在导入默认情况下不包含的 polyfill。您必须首先将其安装为依赖项。如何做到这一点在导入它的同一行的注释中：
// Run `npm install --save classlist.js`.
The same goes for the web-animations-jspolyfill if you haven't done so already.
web-animations-js如果您还没有这样做的话，polyfill 也是如此。
回答by Harjinder Pal Singh
/** 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';
回答by Harjinder Pal Singh
Run the following commands in terminal/command prompt:
在终端/命令提示符中运行以下命令：
npm install --save classlist.jsnpm install --save web-animations-js
npm install --save classlist.jsnpm install --save web-animations-js
