初始化 angular 项目失败

Question

I am trying to set up angular project from scratch.

Below are the steps followed

• Installed Node js

• Installed Angular CLI using npm install -g @angular/cli@latest

  Versions Angular CLI: 9.1.4 Node: 12.16.3 OS: win32 x64

  Angular: ... Ivy Workspace:

  Package Version

  @angular-devkit/architect 0.901.4 @angular-devkit/core 9.1.4 @angular-devkit/schematics 9.1.4 @schematics/angular 9.1.4 @schematics/update 0.901.4 rxjs 6.5.4

Created a new app using ng new app_name
While trying to run the app through command ng serve I am getting a host of errors and app is not starting up

Have attached screen shot of the error

Answer 1

edit

If you use angular 9.1.6 it should be fine now

npm update @angular/cli @angular/core

original post

I had the same problem after making a fresh project using

npm install -g @angular/cli
ng new <projectname>

I believe its a bug in 9.1.5 Angular when using the 9.1.4 cli

You'll see the issue when you do

ng --version

if you get:

Angular CLI: 9.1.4
Node: 12.16.3
OS: win32 x64

Angular: 9.1.5
... animations, cli, common, compiler, compiler-cli, core, forms
... language-service, platform-browser, platform-browser-dynamic
... router
Ivy Workspace: Yes

To resolve you install 9.1.4 Angular instead by running after you've done your

ng new <projectname> 

then run

npm install @angular/core@9.1.4 @angular/animations@9.1.4 @angular/common@9.1.4 @angular/forms@9.1.4 @angular/platform-browser@9.1.4 @angular/router@9.1.4 @angular/platform-browser-dynamic@9.1.4 @angular/compiler@9.1.4 @angular/compiler-cli@9.1.4 @angular/language-service@9.1.4

ng build

See my other answer for reference

ERROR in TypeError: Cannot read property 'flags' of undefined