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首页 > 解决方案 > 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

angular - 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

问题描述

升级@angular/core并@angular/material使用ng update命令后，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)

标签： angularangular-materialangular-cdkangular9

解决方案

升级到 Angular 9 并重新安装所有包/依赖项后，请务必清理您的工作区。它实际上解决了我的大部分错误。

通过删除 node_modules 文件夹、package_lock.json 并通过npm install解决大部分问题重新安装所有包来清理工作区

  • 删除您的node_modules文件夹
  • 删除package_lock.json
  • 删除后重新安装软件包npm install

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