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Discussion on: How to test your NPM package locally

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Replies for: Some things to take into consideration. Let's supose that your npm-calculator also depends on react and your npm-calculator-test also depends on re...

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jackmellis profile image
Jack •

This isn't quite true. Npm is smart enough to resolve common versions of packages so if they both depended on the same major version of react, it would be fine.

This is probably a bad example, though, as 99.9% of the time react would be a peer dependency instead (which completely alleviates this problem and gives the version responsibility to the consumer)

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iamandrewluca profile image
Andrei Luca • • Edited

I have to mention again, that this is a specific use case when you use npm link

Unfortunately that's true. NPM is just a package manager, install/uninstall dependencies. Node is the one who resolves dependencies.

nodejs.org/api/modules.html#module...

Smart enough should be the bundler to know what exactly to load.

github.com/iamandrewluca/example-n...

cd npm-calculator
npm install
cd ../npm-calculator-test
npm install
node index.js
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17.0.2
16.14.0
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jackmellis profile image
Jack •

I mentioned it in another comment but in my experience, npmjs.com/package/yalc solves all of these kind of issues. It's so useful