The build command requires to be run in an Angular project, but a project definition could not be fo

报错：The build command requires to be run in an Angular project, but a project definition could not be found

本来是为了解决cli版本过低的问题，一下子从1.2.7升级到7.3.6，运行node --max-old-space-size=3000 \"node_modules/@angular/cli/bin/ng\" build --prod --aot，直接报错，原因是在新版本的@angular/cli，angular.json替代了angular-cli.json，所以它认为这不是一个angular项目！

解决方式:

ng update @angular/cli --migrate-only --from=1.7.3

https://*.com/questions/53096996/angular-cli-error-the-serve-command-requires-to-be-run-in-an-angular-project-b

报错：FATAL ERROR: CALL_AND_RETRY_LAST Allocation failed - JavaScript heap out of memory

ng build 编译没有问题，ng build --pord --aot 编译就报这个错

解决：node --max-old-space-size=3000 \"node_modules/@angular/cli/bin/ng\" build --pord --aot

主要是增加参数--max-old-space-size=3000，这个内存配置多大，试着看咯，单位是M

 

 

报错：

ERROR in ./src/main.ts

Module not found: Error: Can't resolve './$$_gendir/app/app.module.ngfactory' in

解决：据说是angular/cli的版本过低，还没验证！