node.js - 错误 : Cannot find module '@angular-devkit/build-angular/package.json'

Question

当我执行 ng s --open在终端中，我收到以下错误。

[error] Error: Cannot find module '@angular-devkit/build-angular/package.json'
    Require stack:
    - C:\Users\santhosh.k\AppData\Roaming\npm\node_modules\@angular\cli\node_modules\@angular-devkit\architect\node\node-modules-architect-host.js
    - C:\Users\santhosh.k\AppData\Roaming\npm\node_modules\@angular\cli\node_modules\@angular-devkit\architect\node\index.js
    - C:\Users\santhosh.k\AppData\Roaming\npm\node_modules\@angular\cli\models\architect-command.js
    - C:\Users\santhosh.k\AppData\Roaming\npm\node_modules\@angular\cli\commands\serve-impl.js
    - C:\Users\santhosh.k\AppData\Roaming\npm\node_modules\@angular\cli\node_modules\@angular-devkit\schematics\tools\export-ref.js
    - C:\Users\santhosh.k\AppData\Roaming\npm\node_modules\@angular\cli\node_modules\@angular-devkit\schematics\tools\index.js
    - C:\Users\santhosh.k\AppData\Roaming\npm\node_modules\@angular\cli\utilities\json-schema.js
    - C:\Users\santhosh.k\AppData\Roaming\npm\node_modules\@angular\cli\models\command-runner.js
    - C:\Users\santhosh.k\AppData\Roaming\npm\node_modules\@angular\cli\lib\cli\index.js
    - C:\Users\santhosh.k\AppData\Roaming\npm\node_modules\@angular\cli\lib\init.js
    - C:\Users\santhosh.k\AppData\Roaming\npm\node_modules\@angular\cli\bin\ng
        at Function.Module._resolveFilename (node:internal/modules/cjs/loader:925:15)
        at Function.resolve (node:internal/modules/cjs/helpers:98:19)
        at WorkspaceNodeModulesArchitectHost.resolveBuilder (C:\Users\santhosh.k\AppData\Roaming\npm\node_modules\@angular\cli\node_modules\@angular-devkit\architect\node\node-modules-architect-host.js:85:41)
        at ServeCommand.initialize (C:\Users\santhosh.k\AppData\Roaming\npm\node_modules\@angular\cli\models\architect-command.js:139:55)
        at async ServeCommand.validateAndRun (C:\Users\santhosh.k\AppData\Roaming\npm\node_modules\@angular\cli\models\command.js:127:9)
        at async Object.runCommand (C:\Users\santhosh.k\AppData\Roaming\npm\node_modules\@angular\cli\models\command-runner.js:204:24)
        at async default_1 (C:\Users\santhosh.k\AppData\Roaming\npm\node_modules\@angular\cli\lib\cli\index.js:80:31)

如果我执行 npm install在项目目录中，我收到以下错误日志

D:\application-new-ui\application-ui-master>npm install
npm ERR! code 1
npm ERR! path D:\application-new-ui\application-ui-master\node_modules\node-sass
npm ERR! command failed
npm ERR! command C:\WINDOWS\system32\cmd.exe /d /s /c node scripts/build.js
npm ERR! Building: C:\Users\santhosh.k\AppData\Roaming\npm\node_modules\node\bin\node.exe D:\application-new-ui\application-ui-master\node_modules\node-gyp\bin\node-gyp.js rebuild --verbose --libsass_ext= --libsass_cflags= --libsass_ldflags= --libsass_library=
npm ERR! gyp info it worked if it ends with ok
npm ERR! gyp verb cli [
npm ERR! gyp verb cli   'C:\\Users\\santhosh.k\\AppData\\Roaming\\npm\\node_modules\\node\\bin\\node.exe',
npm ERR! gyp verb cli   'D:\\application-new-ui\\application-ui-master\\node_modules\\node-gyp\\bin\\node-gyp.js',   
npm ERR! gyp verb cli   'rebuild',
npm ERR! gyp verb cli   '--verbose',
npm ERR! gyp verb cli   '--libsass_ext=',
npm ERR! gyp verb cli   '--libsass_cflags=',
npm ERR! gyp verb cli   '--libsass_ldflags=',
npm ERR! gyp verb cli   '--libsass_library='
npm ERR! gyp verb cli ]
npm ERR! gyp info using node-gyp@3.8.0
npm ERR! gyp info using node@15.8.0 | win32 | x64
npm ERR! gyp verb command rebuild []
npm ERR! gyp verb command clean []
npm ERR! gyp verb clean removing "build" directory
npm ERR! gyp verb command configure []
npm ERR! gyp verb check python checking for Python executable "python2" in the PATH
npm ERR! gyp verb `which` failed Error: not found: python2
npm ERR! gyp verb `which` failed     at getNotFoundError (D:\application-new-ui\application-ui-master\node_modules\which\which.js:13:12)
npm ERR! gyp verb `which` failed     at F (D:\application-new-ui\application-ui-master\node_modules\which\which.js:68:19)
npm ERR! gyp verb `which` failed     at E (D:\application-new-ui\application-ui-master\node_modules\which\which.js:80:29)
npm ERR! gyp verb `which` failed     at D:\application-new-ui\application-ui-master\node_modules\which\which.js:89:16npm ERR! gyp verb `which` failed     at D:\application-new-ui\application-ui-master\node_modules\isexe\index.js:42:5 
npm ERR! gyp verb `which` failed     at D:\application-new-ui\application-ui-master\node_modules\isexe\windows.js:36:5
npm ERR! gyp verb `which` failed     at FSReqCallback.oncomplete (node:fs:196:21)
npm ERR! gyp verb `which` failed  python2 Error: not found: python2
npm ERR! gyp verb `which` failed     at getNotFoundError (D:\application-new-ui\application-ui-master\node_modules\which\which.js:13:12)
npm ERR! gyp verb `which` failed     at F (D:\application-new-ui\application-ui-master\node_modules\which\which.js:68:19)
npm ERR! gyp verb `which` failed     at E (D:\application-new-ui\application-ui-master\node_modules\which\which.js:80:29)
npm ERR! gyp verb `which` failed     at D:\application-new-ui\application-ui-master\node_modules\which\which.js:89:16npm ERR! gyp verb `which` failed     at D:\application-new-ui\application-ui-master\node_modules\isexe\index.js:42:5 
npm ERR! gyp verb `which` failed     at D:\application-new-ui\application-ui-master\node_modules\isexe\windows.js:36:5
npm ERR! gyp verb `which` failed     at FSReqCallback.oncomplete (node:fs:196:21) {
npm ERR! gyp verb `which` failed   code: 'ENOENT'
npm ERR! gyp verb `which` failed }
npm ERR! gyp verb check python checking for Python executable "python" in the PATH
npm ERR! gyp verb `which` succeeded python C:\Python39\python.EXE
npm ERR! gyp ERR! configure error
npm ERR! gyp ERR! stack Error: Command failed: C:\Python39\python.EXE -c import sys; print "%s.%s.%s" % sys.version_info[:3];
npm ERR! gyp ERR! stack   File "<string>", line 1
npm ERR! gyp ERR! stack     import sys; print "%s.%s.%s" % sys.version_info[:3];
npm ERR! gyp ERR! stack                       ^
npm ERR! gyp ERR! stack SyntaxError: invalid syntax
npm ERR! gyp ERR! stack
npm ERR! gyp ERR! stack     at ChildProcess.exithandler (node:child_process:327:12)
npm ERR! gyp ERR! stack     at ChildProcess.emit (node:events:378:20)
npm ERR! gyp ERR! stack     at maybeClose (node:internal/child_process:1067:16)
npm ERR! gyp ERR! stack     at Process.ChildProcess._handle.onexit (node:internal/child_process:301:5)
npm ERR! gyp ERR! System Windows_NT 10.0.19041
npm ERR! gyp ERR! command "C:\\Users\\santhosh.k\\AppData\\Roaming\\npm\\node_modules\\node\\bin\\node.exe" "D:\\application-new-ui\\application-ui-master\\node_modules\\node-gyp\\bin\\node-gyp.js" "rebuild" "--verbose" "--libsass_ext=" "--libsass_cflags=" "--libsass_ldflags=" "--libsass_library="
npm ERR! gyp ERR! cwd D:\application-new-ui\application-ui-master\node_modules\node-sass
npm ERR! gyp ERR! node -v v15.8.0
npm ERR! gyp ERR! node-gyp -v v3.8.0
npm ERR! gyp ERR! not ok
npm ERR! Build failed with error code: 1

npm ERR! A complete log of this run can be found in:
npm ERR!     C:\Users\santhosh.k\AppData\Local\npm-cache\_logs\2021-02-22T10_37_55_073Z-debug.log

Answer 1

更新到 angular 12 后，我的应用程序遇到了同样的问题。
尝试添加 --force在 npm 命令行的末尾，它解决了
问题给我。

npm install --save-dev @angular-devkit/build-angular --force

还要检查您的 Node 版本，Angular 不支持 Node (16.8.0)。