question: I just wonder why this module is installed without '-D' .

[bumjun-kim]

Dear ppl.

Can anyone tell me why this module is installed by npm i type-fest ?

I thought typescript is a extensive tool for developer,
and type-fest is also a thing to enhance use of typescript.

In other words, (I supposed)
Typescript and other npm modules related to typescript are not needed at production env.

Am I missing something ?
Hope somebody give me a clue :)

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[sindresorhus]

This really depends on how you use it. If you use it in a package, it needs to be added as a dependency since you depend on the types. If you use it in an app/server, it can be installed as a dev dependency. I'm using without -D just to be safe so people using it in packages don't make the mistake of installing it as a dev dependency.

[bumjun-kim]

@sindresorhus Thnx for clearing up :)