On Windows, Yeoman generator should stop with error if your NPM version is too old #1614

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fergalmoran · 2025-08-09T17:20:54Z

fergalmoran commented

2025-08-09 17:20:54 +00:00

Originally created by @SteveSandersonMS on 5/18/2016

NPM < v3 on Windows can't correctly restore the full dependency tree for packages like @angular/*.

If you use these Yeoman generators, you'll eventually end up with an error like:

ERROR in ./ClientApp/boot-client.ts
Module not found: Error: Cannot resolve module 'reflect-metadata' in C:\Users\stevesa\Desktop\spapacktest2\ClientApp
 @ ./ClientApp/boot-client.ts 4:0-27

The underlying cause is NPM not restoring the packages properly, and the solution is to update to NPM 3+. We should prevent things from getting this far by stopping the generator up front if you're on NPM < 3 on Windows.

*Originally created by @SteveSandersonMS on 5/18/2016* NPM < v3 on Windows can't correctly restore the full dependency tree for packages like `@angular/*`. If you use these Yeoman generators, you'll eventually end up with an error like: ``` ERROR in ./ClientApp/boot-client.ts Module not found: Error: Cannot resolve module 'reflect-metadata' in C:\Users\stevesa\Desktop\spapacktest2\ClientApp @ ./ClientApp/boot-client.ts 4:0-27 ``` The underlying cause is NPM not restoring the packages properly, and the solution is to update to NPM 3+. We should prevent things from getting this far by stopping the generator up front if you're on NPM < 3 on Windows.

fergalmoran closed this issue

2025-08-09 17:20:54 +00:00

fergalmoran added the enhancement enhancement enhancement enhancement enhancement enhancement enhancement enhancement enhancement enhancement enhancement enhancement labels 2025-08-09 17:20:55 +00:00

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Reference: github/JavaScriptServices#1614