试图用 ngcc 备份文件覆盖 @angular/cdk/stepper/step-header.d.ts.__ivy_ngcc_bak,这是不允许的

Tried to overwrite @angular/cdk/stepper/step-header.d.ts.__ivy_ngcc_bak with an ngcc back up file, which is disallowed

使用 ng update 命令升级 @angular/core@angular/material 后,ngcc 命令失败并出现以下错误

使用的命令:

ngcc --properties es2015 browser module main --first-only --create-ivy-entry-points

错误:

> Compiling @angular/cdk/stepper : es2015 as esm2015
> Compiling @angular/cdk/drag-drop : es2015 as esm2015
> Error: Error on worker #3: Error: Tried to overwrite node_modules/@angular/cdk/stepper/step-header.d.ts.__ivy_ngcc_bak with an ngcc back up file, which is disallowed.
>     at NewEntryPointFileWriter.InPlaceFileWriter.writeFileAndBackup (node_modules/@angular/compiler-cli/ngcc/src/writing/in_place_file_writer.js:37:23)
>     at NewEntryPointFileWriter.writeFile (node_modules/@angular/compiler-cli/ngcc/src/writing/new_entry_point_file_writer.js:64:53)
>     at node_modules/@angular/compiler-cli/ngcc/src/writing/new_entry_point_file_writer.js:46:69
>     at Array.forEach (<anonymous>)
>     at NewEntryPointFileWriter.writeBundle (node_modules/@angular/compiler-cli/ngcc/src/writing/new_entry_point_file_writer.js:46:30)
>     at ClusterWorker.compile (node_modules/@angular/compiler-cli/ngcc/src/main.js:173:32)
>     at Worker.<anonymous> (node_modules/@angular/compiler-cli/ngcc/src/execution/cluster/worker.js:44:42)
>     at Worker.emit (events.js:321:20)
>     at process.<anonymous> (internal/cluster/worker.js:32:12)
>     at process.emit (events.js:321:20)
>     at ClusterMaster.onWorkerMessage (node_modules/@angular/compiler-cli/ngcc/src/execution/cluster/master.js:158:27)
>     at node_modules/@angular/compiler-cli/ngcc/src/execution/cluster/master.js:46:95
>     at ClusterMaster.<anonymous> (node_modules/@angular/compiler-cli/ngcc/src/execution/cluster/master.js:238:57)
>     at step (node_modules/tslib/tslib.js:136:27)
>     at Object.next (node_modules/tslib/tslib.js:117:57)
>     at node_modules/tslib/tslib.js:110:75
>     at new Promise (<anonymous>)
>     at Object.__awaiter (node_modules/tslib/tslib.js:106:16)
>     at EventEmitter.<anonymous> (node_modules/@angular/compiler-cli/ngcc/src/execution/cluster/master.js:232:32)
>     at EventEmitter.emit (events.js:321:20)

确保在升级到 angular 9 后清理您的工作区并重新安装所有 packages/dependencies。它实际上解决了我的大部分错误。

通过删除 node_modules 文件夹清理工作区,package_lock.json 并通过 npm install 重新安装所有包解决了大部分问题

  • 删除您的 node_modules 文件夹
  • 删除package_lock.json
  • 使用 npm install
  • 删除后重新安装包

关闭 enableIvy 对我有用。

来自 tsconfig 文件,在 angularCompilerOptions

添加"enableIvy": false

在我的例子中,我使用 npm link 命令在消费者应用程序中使用了一个 Angular 11 库。

我在消费者应用程序中收到错误 运行 npm start。 对我来说,修复是在库的 tsconfig.json 中(之前是“错误的”)。

angularCompilerOptions": 
{
    "enableIvy": true 
}

有趣的是,此修复与@Ahmed El-Araby 上面提到的 Angular 9 的修复相反,可能是因为在 Angular 11 Ivy 中默认启用