Versions of @angular/compiler-cli and typescript could not be determined

Question

I have installed Angular/cli and then try to run command ng serve then below error is throwing. I have tried lot of thing like uninstall angular/cli, npm cache clean, etc

Answer 1

Actually the real problem is with npm.

If its downloading as --legacy-bundling=true (Which is by default) then you will have this issue. If you see node_modules folder all the dependent modules would be nested.

When you run npm install command you should set --legacy-bundling=false

npm install --legacy-bundling=false

Now if you see node_modules folder no any module would be nested. And everything will work.

You can set npm default behaviour using following command, then you will not have to set every time.

npm set --legacy-bundling=false