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npm ecosystem and semver #328

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danseethaler opened this issue Oct 17, 2017 · 2 comments
Closed

npm ecosystem and semver #328

danseethaler opened this issue Oct 17, 2017 · 2 comments

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@danseethaler
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@danseethaler danseethaler commented Oct 17, 2017

Hey Kent!

I've published a few npm packages recently and also been working on upgrading to React@16 at work. I have some rapid fire questions about npm I'm hoping you can help with or at least point me in the right direction. Two of them I actually asked on SO but haven't had any feedback at all. Thanks so much for any thoughts in advance!

Nested dependecy overhead

While upgrading to react@16 on the foreman project I've been thinking about the structure of npm and how dependencies rely on other dependencies and on and on. Each of those dependencies sets a specific version range that it will work with. This whole scenario seems like it could really slow down the upgrade process if you've got a nested dependency that hasn't updated their package.json to support React@16 (or whatever you're moving to). If a package has a React peer dependency of 15.x will it use React@16 anyway? I realize it may break since it hasn't been tested but would it use it?

Set the semver range as npm author

I just published my first npm package on npm and I don’t understand how the semver range is specified.

When I install react I get "react": "^15.6.1" (with the caret) in my package.json. When I install dayone-to-md I get "dayone-to-md": "0.0.2". I'm assuming as a package author I can do something to set the caret/tilde when a user installs my package. How would I accomplish that?

Get patch updates with caret on npm package

The caret symbol (^) doesn't seem to include patch updates on npm update

After I published v0.0.1 of my package I installed it in a local project and set the semver range to ^0.0.1. I then bumped my packge version to v0.0.2 and published to npm. When I run npm outdated I see

Package       Current  Wanted  Latest  Location
dayone-to-md    0.0.1   0.0.1   0.0.2  test-dayone-to-md

indicating there is a higher latest version but my semver range doesn't want it.

If I change my semver range to ~0.0.1 and run npm outdated I see

Package       Current  Wanted  Latest  Location
dayone-to-md    0.0.1   0.0.2   0.0.2  test-dayone-to-md

I would expect this second outcome to be the result when I use the ^ or the ~ since they both encompass the patch updates.

I read through the docs but I don't see anything that would explain this. Thanks for your help!

@kentcdodds
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@kentcdodds kentcdodds commented Nov 16, 2017

Hi @danseethaler!

I was locked out of my house for a few hours the other day so I recorded answers to a bunch of my AMA questions and put them up on my 3 minute podcast. Here's your answer!

@kentcdodds kentcdodds closed this Nov 16, 2017
@danseethaler
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@danseethaler danseethaler commented Nov 16, 2017

Ah this is great! Thanks @kentcdodds! The https://semver.npmjs.com/ site is pretty nifty 😀

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