Issue creating angular project with angular cli

Question

I am using Windows 10, I never had any issue using angular cli to create and run angular project, today i noticed i was still able to run old ones using ng serve but when i tried to create new ones with ng new *name* I had these warnings at the end of the creation logs:

npm WARN rollback Rolling back [email protected] failed (this is probably harmless): EPERM: operation not permitted, lstat 'C:\Users\Talon\Desktop\angular\angular-essentials-two\routing\node_modules\fsevents\node_modules\rc\node_modules'
npm WARN @angular-devkit/[email protected] requires a peer of @angular-devkit/[email protected] but none is installed. You must install peer dependencies yourself.
npm WARN @schematics/[email protected] requires a peer of @angular-devkit/[email protected] but none is installed. You must install peer dependencies yourself.
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: [email protected] (node_modules\fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for [email protected]: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"})

If I then try to go to the project and run ng serve I have

module.js:540
throw err;
^

Error: Cannot find module '@angular-devkit/core'
at Function.Module._resolveFilename (module.js:538:15)
at Function.Module._load (module.js:468:25)
at Module.require (module.js:587:17)
at require (internal/module.js:11:18)
at Object.<anonymous> (C:\Users\Talon\Desktop\angular\angular-essentials-two\routing\node_modules\@angular-devkit\schematics\src\tree\virtual.js:10:16)
at Module._compile (module.js:643:30)
at Object.Module._extensions..js (module.js:654:10)
at Module.load (module.js:556:32)
at tryModuleLoad (module.js:499:12)
at Function.Module._load (module.js:491:3)

I googled around and found this fix, but if I try to run npm install -g @angular-devkit/core I have

npm WARN optional SKIPPING OPTIONAL DEPENDENCY: [email protected] (node_modules\@angular-devkit\core\node_modules\fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for [email protected]: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"})

+ @angular-devkit/[email protected]
updated 1 package in 9.351s

And if I ng serve I have the same Cannot find module '@angular-devkit/core' error.

I don't know if it's a coincidence but before the latest Windows 10 update i had a couple of days ago everything was working fine. My current angular cli version is 1.6.3.

Try npm install --save-dev @angular-devkit/core, literally just ran into this error for the first time just now and that's what fixed it for me... maybe they updated something last night? — Z. Bagley
– Z. Bagley, Commented Jan 20, 2018 at 17:30
That fixed it. It threw the same skipping optional depedency messages at the end but if I run it, it works properly. — MrSir
– MrSir, Commented Jan 20, 2018 at 17:34
Don't worry about the fsevents dependency, it's for iOS only I believe (both windows and linux pop this soft optional dependency warning) — Z. Bagley
– Z. Bagley, Commented Jan 20, 2018 at 17:44

Z. Bagley · Accepted Answer · 2018-01-20 17:45:22Z

1

npm install --save-dev @angular-devkit/core will solve this issue

answered Jan 20, 2018 at 17:45

Z. Bagley

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