我已将我的 Angular 应用程序从 12 版本升级到 13 版本。我在单元测试运行期间开始遇到此错误。

Chrome Headless 94.0.4606.61 (Windows 10) AppComponent should create the app FAILED
        TypeError: Cannot read properties of undefined (reading 'match')
            at extractCommentsWithHash (http:###/_karma_webpack_/webpack:/node_modules/@angular/compiler/fesm2020/compiler.mjs:9130:18)
            at ShadowCss.shimCssText (http:###/_karma_webpack_/webpack:/node_modules/@angular/compiler/fesm2020/compiler.mjs:8694:34)
            at map (http:###/_karma_webpack_/webpack:/node_modules/@angular/compiler/fesm2020/compiler.mjs:22402:26)
            at Array.map (<anonymous>)
            at compileStyles (http:###/_karma_webpack_/webpack:/node_modules/@angular/compiler/fesm2020/compiler.mjs:22401:19)
            at compileComponentFromMetadata (http:###/_karma_webpack_/webpack:/node_modules/@angular/compiler/fesm2020/compiler.mjs:21948:13)
            at CompilerFacadeImpl.compileComponentFromMeta (http:###/_karma_webpack_/webpack:/node_modules/@angular/compiler/fesm2020/compiler.mjs:22570:21)
            at CompilerFacadeImpl.compileComponent (http:###/_karma_webpack_/webpack:/node_modules/@angular/compiler/fesm2020/compiler.mjs:22560:21)
            at Function.get (http:###/_karma_webpack_/webpack:/node_modules/@angular/core/fesm2020/core.mjs:24583:47)
            at getComponentDef (http:###/_karma_webpack_/webpack:/node_modules/@angular/core/fesm2020/core.mjs:1119:16)
        Failed: Cannot read properties of undefined (reading 'match')

我试过这个解决方案，但没有用。

manually remove package-lock.json
manually remove folder node_modules
npm install

你有什么解决办法吗？是否与Angular版本升级有关？

最佳答案

我在这个答案中找到了解决方案 https://stackoverflow.com/a/68797111/3387259

我在 tsconfig.json 中将 commonjs 更改为 es2020 并且还添加了 "moduleResolution": "node".

关于angular - 类型错误 : Cannot read properties of undefined (reading 'match' )，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/70066396/