即使对于新/小型项目，Angular8，Ng 服务在我的机器上也很慢

Question

Ng serve is taking around 20 minutes to start the application on my machine even if I restart machine.

Node version - v12.13.0 Npm version - 6.9.0 Angular-Cli version - 8.0.2 Angular Version - 8

System Configuration Windows : 10/ 64 Bit Ram : 8GB

Answer 1

This could be the issue with @angular-devkit/build-angular I had exactly the same issue tonight... and I found one solution ....

package.json/devDependencies : I downgraded from 0.11

@angular-devkit/build-angular": "^0.6.8" ,

and now it is fast (1.2 sec).... (without aot) then I tested 0.8.8 ... it is OK (1.2 sec) then I tested 0.10.7 ... slow for the first change (8 sec), then OK then I tested 0.12.0-beta.0 .. it is not OK (11 seconds at 1st, 2nd, 3rd change) so I go back to 0.10.7 ....

For me, it is still ~50 seconds for ng serve .. but then a change is 1 second instead of 12 seconds with 0.11 (with --aot it is 157 seconds to serve and between 50 and 157 for a basic change)

My Config :

Angular CLI: 8.0.1 Node: 12.13.0 OS: win32 x64 Angular: 8

Try removing node_modules using

rm -rf node_modules

and reinstalling them again

npm i OR npm install

This may be the issue.