The first error message is
Error "@angular/COMPILER-CLI" package is not properly installed
The following error information appears in the attempted scenario two o'clock
NPM err! Code eintegrity
NPM err! sha1-omjbxbx6n5nvnwrvkffdgvdt2dq= Integrity checksum failed when using sha1:wanted sha1-omjbxbx6n5nvnwrvkffdgvdt2dq= But got sha1-pvzuut5szaqjmvkcciwuicpr9ky=. (259028 bytes)
NPM err! A Complete log of this run can is found in:
NPM err! C:\Users\sp\AppData\Roaming\npm-cache_logs\2017-09-20T04_31_14_778Z-debug.log
Tried a variety of scenarios
Scenario One (failed)
Clear Cache
NPM Cache Verify
Programme II (failure)
1.Uninstall and Clean (global)
RM-RF node_modules Dist
npm uninstall-g @angular/cli
NPM Cache Verify
2.Reinstall and Play (global)
NPM install-g @angular/cli@latest
npm install
ng serve
The ultimate solution is
Grep-ir "sha1-omjbxbx6n5nvnwrvkffdgvdt2dq= Integrity Checksum" (NPM's installation directory)
Run NPM Install again
The typescript and angular CLI are then updated globally, and the typescript and angular CLI are updated by the directory
Ng Server completes