我需要运行该项目并在本地主机上访问它。当我从 gitlab 下载该项目并将其解压缩时，它抛出一个警告，指出本地和全局 CLI 包不匹配。然后我将本地CLI版本升级到7.1.1。从那时起它就抛出这个错误。是全局和本地 CLI 包的问题吗？
我什至将全局和本地 CLI 版本降级到 1.7.4。它抛出 ng command not found 错误。我的项目文件夹中有 .angular-cli.json ，package.json 中的 @angular/cli 是 7.1.1。
当我从命令行运行 ngserve 时，出现以下错误:
C:\Users\mrunalini.prasad\Desktop\fsacademy\fsacademy-master>ng serve
The serve command requires to be run in an Angular project, but a project definition could not be found.
我无法修复它。以下是我更新 Angular CLI 全局和本地版本所遵循的步骤
npm uninstall -g angular-cli
npm uninstall --save-dev angular-cli
要将 Angular CLI 更新到新版本，您必须更新全局包和项目的本地包。
Global package:
npm uninstall -g @angular/cli
npm cache clean
npm install -g @angular/cli@latest
Local project package:
rmdir node_modules on Windows
npm install --save-dev @angular/cli@latest
npm install
ng --version is giving the below output:
C:\Users\mrunalini.prasad\Desktop\fsacademy\fsacademy-master>ng --version
_ _ ____ _ ___
/ \ _ __ __ _ _ _| | __ _ _ __ / ___| | |_ _|
/ ? \ | '_ \ / _` | | | | |/ _` | '__| | | | | | |
/ ___ \| | | | (_| | |_| | | (_| | | | |___| |___ | |
/_/ \_\_| |_|\__, |\__,_|_|\__,_|_| \____|_____|___|
|___/
Angular CLI: 7.1.1
Node: 10.10.0
OS: win32 x64
Angular: 4.4.7
... animations, common, compiler, compiler-cli, core, forms
... http, platform-browser, platform-browser-dynamic, router
... tsc-wrapped
Package Version
------------------------------------------------------
@angular-devkit/architect 0.11.1
@angular-devkit/core 7.1.1
@angular-devkit/schematics 7.1.1
@angular/cdk 5.2.5
@angular/cli 7.1.1
@angular/flex-layout 2.0.0-rc.1
@angular/material 2.0.0-beta.5
@schematics/angular 7.1.1
@schematics/update 0.11.1
rxjs 5.5.12
typescript 2.3.4
您能帮忙解决这个错误吗？
请找到下面的项目目录结构截图:它包含 .angular-cli.json 和 package.json 文件。
Directory of C:\Users\mrunalini.prasad\Desktop\fsacademy\fsacademy-master
12/05/2018 09:47 AM <DIR> .
12/05/2018 09:47 AM <DIR> ..
12/03/2018 03:24 PM 1,060 .angular-cli.json
12/03/2018 03:24 PM 245 .editorconfig
12/04/2018 03:12 PM <DIR> .vscode
12/03/2018 03:24 PM 2,272 app.component.ts
12/04/2018 03:12 PM <DIR> backup
12/05/2018 09:47 AM <DIR> node_modules
12/05/2018 09:47 AM 149,659 package-lock.json
12/04/2018 05:11 PM 1,299 package.json
12/03/2018 03:24 PM 1,397 package.json.2
12/03/2018 03:24 PM 3,427 README.md
12/04/2018 03:14 PM <DIR> src
12/04/2018 03:14 PM <DIR> steps
12/03/2018 03:24 PM 431 tsconfig.json
12/03/2018 03:24 PM 2,710 tslint.json
12/04/2018 03:14 PM <DIR> workshop-cli
12/03/2018 03:24 PM 174,967 yarn.lock
10 File(s) 337,467 bytes
8 Dir(s) 89,720,467,456 bytes free
当我运行 npm install 而不更新任何内容时，出现以下错误:
gyp ERR! stack Error: Can't find Python executable "python", you can set the PYT
HON env variable.
gyp ERR! stack at PythonFinder.failNoPython (C:\Users\mrunalini.prasad\Deskt
op\fsacademydemo\fsacademy-master\node_modules\node-gyp\lib\configure.js:484:19)
gyp ERR! stack at PythonFinder.<anonymous> (C:\Users\mrunalini.prasad\Deskto
p\fsacademydemo\fsacademy-master\node_modules\node-gyp\lib\configure.js:509:16)
gyp ERR! stack at C:\Users\mrunalini.prasad\Desktop\fsacademydemo\fsacademy-
master\node_modules\graceful-fs\polyfills.js:282:31
gyp ERR! stack at FSReqWrap.oncomplete (fs.js:154:21)
gyp ERR! System Windows_NT 6.3.9600
gyp ERR! command "C:\\Program Files\\nodejs\\node.exe" "C:\\Users\\mrunalini.pra
sad\\Desktop\\fsacademydemo\\fsacademy-master\\node_modules\\node-gyp\\bin\\node
-gyp.js" "rebuild" "--verbose" "--libsass_ext=" "--libsass_cflags=" "--libsass_l
dflags=" "--libsass_library="
gyp ERR! cwd C:\Users\mrunalini.prasad\Desktop\fsacademydemo\fsacademy-master\no
de_modules\node-sass
gyp ERR! node -v v10.10.0
gyp ERR! node-gyp -v v3.8.0
gyp ERR! not ok
当我在 npm install 后运行 ngserve 而不更新任何内容时，出现以下错误:
ERROR in ./node_modules/raw-loader!./node_modules/postcss-loader/lib??embedded!.
/node_modules/sass-loader/lib/loader.js??ref--8-3!./src/theme.scss
Module build failed: Error: Cannot find module 'node-sass'
at Function.Module._resolveFilename (internal/modules/cjs/loader.js:581:15)
at Function.Module._load (internal/modules/cjs/loader.js:507:25)
at Module.require (internal/modules/cjs/loader.js:637:17)
at require (internal/modules/cjs/helpers.js:20:18)
at Object.<anonymous> (C:\Users\mrunalini.prasad\Desktop\fsacademydemo\fsaca
demy-master\node_modules\sass-loader\lib\loader.js:3:14)
at Module._compile (internal/modules/cjs/loader.js:689:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:700:10)
at Module.load (internal/modules/cjs/loader.js:599:32)
at tryModuleLoad (internal/modules/cjs/loader.js:538:12)
at Function.Module._load (internal/modules/cjs/loader.js:530:3)
at Module.require (internal/modules/cjs/loader.js:637:17)
at require (internal/modules/cjs/helpers.js:20:18)
at loadLoader (C:\Users\mrunalini.prasad\Desktop\fsacademydemo\fsacademy-mas
ter\node_modules\loader-runner\lib\loadLoader.js:13:17)
at iteratePitchingLoaders (C:\Users\mrunalini.prasad\Desktop\fsacademydemo\f
sacademy-master\node_modules\loader-runner\lib\LoaderRunner.js:169:2)
at iteratePitchingLoaders (C:\Users\mrunalini.prasad\Desktop\fsacademydemo\f
sacademy-master\node_modules\loader-runner\lib\LoaderRunner.js:165:10)
at C:\Users\mrunalini.prasad\Desktop\fsacademydemo\fsacademy-master\node_mod
ules\loader-runner\lib\LoaderRunner.js:173:18
最佳答案
看来您还没有将项目迁移到版本 7。新的 Angular cli 使用 angular.json 而不是 .angular-cli.json 进行配置。
关注migration guide .
关于angular - ng 服务抛出错误 "The serve command requires to be run in an Angular project, but a project definition could not be found"，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/53625195/