TypeError: Cannot read property 'kind' of undefined at ...

作者：七棵菜日期：2023-08-16 栏目：计算机分类：1 人气：404

angular8 项目在编译时添加`prod`选项报错：

```
TypeError: Cannot read property 'kind' of undefined at ...
```

> 查看详细的报错信息，发现是`@angular-devkit/build-angular`包的错误，那么升级`@angular-devkit/build-angular`即可，原来的版本是`~0.800.2`,升级到`^0.803.28`版本，重新编译通过。

但是之前`prod`编译是没有错误的，后来安装了第三方包，因为这个第三方包是自己写的，对比发现第三方包的`@angular-devkit/build-angular`版本是`^0.803.28`，所以猜测可能是`@angular-devkit/build-angular`版本不一致引起的这个问题。

详细报错信息如下：

```
ERROR in D:/workspace/demo/angular/base-admin/node_modules/seven-food-form/fesm5/seven-food-form.js
Module build failed (from D:/workspace/demo/angular/base-admin/node_modules/@angular-devkit/build-optimizer/src/build-optimizer/webpack-loader.js):
TypeError: Cannot read property 'kind' of undefined
    at isAngularDecoratorMetadataExpression (D:\workspace\demo\angular\base-admin\node_modules\@angular-devkit\build-optimizer\src\transforms\scrub-file
    at checkNodeForDecorators (D:\workspace\demo\angular\base-admin\node_modules\@angular-devkit\build-optimizer\src\transforms\scrub-file.js:77:21)
    at visitNodes (D:\workspace\demo\angular\base-admin\node_modules\@angular-devkit\build-optimizer\node_modules\typescript\lib\typescript.js:16514:30)
    at Object.forEachChild (D:\workspace\demo\angular\base-admin\node_modules\@angular-devkit\build-optimizer\node_modules\typescript\lib\typescript.js:
    at checkNodeForDecorators (D:\workspace\demo\angular\base-admin\node_modules\@angular-devkit\build-optimizer\src\transforms\scrub-file.js:68:31)
    at visitNode (D:\workspace\demo\angular\base-admin\node_modules\@angular-devkit\build-optimizer\node_modules\typescript\lib\typescript.js:16505:24)
    at Object.forEachChild (D:\workspace\demo\angular\base-admin\node_modules\@angular-devkit\build-optimizer\node_modules\typescript\lib\typescript.js:
    at checkNodeForDecorators (D:\workspace\demo\angular\base-admin\node_modules\@angular-devkit\build-optimizer\src\transforms\scrub-file.js:68:31)
    at visitNode (D:\workspace\demo\angular\base-admin\node_modules\@angular-devkit\build-optimizer\node_modules\typescript\lib\typescript.js:16505:24)
    at Object.forEachChild (D:\workspace\demo\angular\base-admin\node_modules\@angular-devkit\build-optimizer\node_modules\typescript\lib\typescript.js:
    at checkNodeForDecorators (D:\workspace\demo\angular\base-admin\node_modules\@angular-devkit\build-optimizer\src\transforms\scrub-file.js:68:31)
    at visitNode (D:\workspace\demo\angular\base-admin\node_modules\@angular-devkit\build-optimizer\node_modules\typescript\lib\typescript.js:16505:24)
    at Object.forEachChild (D:\workspace\demo\angular\base-admin\node_modules\@angular-devkit\build-optimizer\node_modules\typescript\lib\typescript.js:
    at checkNodeForDecorators (D:\workspace\demo\angular\base-admin\node_modules\@angular-devkit\build-optimizer\src\transforms\scrub-file.js:68:31)
    at visitNode (D:\workspace\demo\angular\base-admin\node_modules\@angular-devkit\build-optimizer\node_modules\typescript\lib\typescript.js:16505:24)
    at Object.forEachChild (D:\workspace\demo\angular\base-admin\node_modules\@angular-devkit\build-optimizer\node_modules\typescript\lib\typescript.js:
    at checkNodeForDecorators (D:\workspace\demo\angular\base-admin\node_modules\@angular-devkit\build-optimizer\src\transforms\scrub-file.js:68:31)
    at visitNodes (D:\workspace\demo\angular\base-admin\node_modules\@angular-devkit\build-optimizer\node_modules\typescript\lib\typescript.js:16514:30)
    at Object.forEachChild (D:\workspace\demo\angular\base-admin\node_modules\@angular-devkit\build-optimizer\node_modules\typescript\lib\typescript.js:
    at checkNodeForDecorators (D:\workspace\demo\angular\base-admin\node_modules\@angular-devkit\build-optimizer\src\transforms\scrub-file.js:68:31)
    at visitNode (D:\workspace\demo\angular\base-admin\node_modules\@angular-devkit\build-optimizer\node_modules\typescript\lib\typescript.js:16505:24)
    at Object.forEachChild (D:\workspace\demo\angular\base-admin\node_modules\@angular-devkit\build-optimizer\node_modules\typescript\lib\typescript.js:
    at checkNodeForDecorators (D:\workspace\demo\angular\base-admin\node_modules\@angular-devkit\build-optimizer\src\transforms\scrub-file.js:68:31)
    at visitNodes (D:\workspace\demo\angular\base-admin\node_modules\@angular-devkit\build-optimizer\node_modules\typescript\lib\typescript.js:16514:30)
    at Object.forEachChild (D:\workspace\demo\angular\base-admin\node_modules\@angular-devkit\build-optimizer\node_modules\typescript\lib\typescript.js:
    at transformer (D:\workspace\demo\angular\base-admin\node_modules\@angular-devkit\build-optimizer\src\transforms\scrub-file.js:63:16)
    at D:\workspace\demo\angular\base-admin\node_modules\@angular-devkit\build-optimizer\node_modules\typescript\lib\typescript.js:1492:86
    at reduceLeft (D:\workspace\demo\angular\base-admin\node_modules\@angular-devkit\build-optimizer\node_modules\typescript\lib\typescript.js:1187:30)
```

标签： angular TypeError @angular-devkit

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