从Angular 8 universal迁移到9 Universal版本失败: require.resolve不是函数

Question

​

​

挖掘角度错误，我发现了下面的错误：

 [error] TypeError: require.resolve is not a function
        at SchematicImpl.<anonymous> (E:\B2C-NG-9\b2c\node_modules\@nguniversal\express-engine\schematics\migrations\update-9\index.js:42:44)
        at Generator.next (<anonymous>)
        at E:\B2C-NG-9\b2c\node_modules\@nguniversal\express-engine\schematics\migrations\update-9\index.js:20:71
        at new Promise (<anonymous>)
        at __awaiter (E:\B2C-NG-9\b2c\node_modules\@nguniversal\express-engine\schematics\migrations\update-9\index.js:16:12)
        at E:\B2C-NG-9\b2c\node_modules\@nguniversal\express-engine\schematics\migrations\update-9\index.js:38:26
        at MergeMapSubscriber.project (C:\Users\YOURTR~1\AppData\Local\Temp\angular-cli-packages-YWauXm\node_modules\@angular\cli\node_modules\@angular-devkit\schematics\src\rules\call.js:75:24)
        at MergeMapSubscriber._tryNext (C:\Users\YOURTR~1\AppData\Local\Temp\angular-cli-packages-YWauXm\node_modules\@angular\cli\node_modules\rxjs\internal\operators\mergeMap.js:67:27)
        at MergeMapSubscriber._next (C:\Users\YOURTR~1\AppData\Local\Temp\angular-cli-packages-YWauXm\node_modules\@angular\cli\node_modules\rxjs\internal\operators\mergeMap.js:57:18)
        at MergeMapSubscriber.Subscriber.next (C:\Users\YOURTR~1\AppData\Local\Temp\angular-cli-packages-YWauXm\node_modules\@angular\cli\node_modules\rxjs\internal\Subscriber.js:66:18)

Answer 1

这就是我所做的。

我已经临时将此文件中的代码(在尝试ng update之后) node_modules/@nguniversal/express-engine/schematics/migrations/update-9/index.js:36替换为：

const collectionPath = require.hasOwnProperty('resolve') ? require.resolve('../../collection.json') : '@nguniversal/express-engine/schematics/collection.json';

然后我运行：

ng update @nguniversal/express-engine@9 --allow-dirty --migrate-only --from=8

migrate-only -不恢复和删除新的迁移文件