How do I get current package's version using only npm

Question

How do I get the current version from package.json using npm?

I know that npm version will output my package's version along with npm and other dependencies. But I need a short command to get only my package version to use on a CI. So ideally, no extra input as the CI doesn't know what project it's dealing with.

npm version from-git --allow-same-version would also work, if it didn't try to tag the new version on Git.

You'll need to utilize either an npm script or nodejs script as _npm_ does not provide a direct command to achieve this. See my answer [here](https://stackoverflow.com/questions/48609931/how-can-i-reference-package-version-in-npm-script#answer-48619640) which indicates how to reference npm's built-in variable named `npm_package_version` to retrieve the current version from _package.json_. — RobC, Dec 06 '18 at 11:01

Mbrevda · Answer 1 · 2021-09-02T19:15:29.957

26

Using npm:

npm -s run env echo '$npm_package_version'

from npm v7.2:

npm pkg get version

edited Sep 02 '21 at 19:15

answered Dec 21 '20 at 12:30

Mbrevda

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These commands also make it really easy to get other package properties, such as `name` with `npm -s run env echo '$npm_package_name'` or `npm pkg get name`. Note that the `npm pkg get` command return values include surrounding quotes. – derpedy-doo Oct 17 '21 at 20:22
Both commands are not working for me. – Mac Ignacio May 03 '22 at 06:38
It could also be used as shebang in external scripts (they may even resides in another fs location): `#!/usr/bin/env -S npm -s run env bash` (and you can replace bash with python, node, ...). – ThoSil May 31 '22 at 12:57

score 19 · Answer 2 · edited Sep 19 '20 at 18:46

19

There is no direct npm command to show only your package version, but you can use this hack from your project folder:

node -e "console.log(require('./package.json').version);"

If you want to use an npm command you can wrap it into a "script" in your package.json file :

"scripts": {
    "version": "node -e console.log(require('./package.json').version);"
}

Now you can launch npm run version to get your package version

edited Sep 19 '20 at 18:46

phoenix

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answered Dec 05 '18 at 17:21

Kaz

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This is better than a hack. – Ian Jan 13 '20 at 03:36
you can actually npm without adding a new script to get the version: https://stackoverflow.com/a/65392808/747749 – Mbrevda Jan 04 '21 at 11:53
I upvoted this one instead of `npm pkg get version` because this is much more performant. – davidethell Jun 09 '22 at 16:28

score 8 · Answer 3 · answered Mar 05 '20 at 03:27

8

To build on Kaz's answer this is slightly shorter.

PACKAGE_VERSION=`node -p "require('./package.json').version"`

answered Mar 05 '20 at 03:27

Ben Winding

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This is really the fastest answer compared to `npm pkg get version` – davidethell Jun 09 '22 at 16:31

score 1 · Answer 4 · answered Jun 20 '19 at 14:34

If using grep and sed is not a problem for you, this is working pretty good for me:

VERSION_NUMBER=$(npm version | grep @ | sed -re "s/\{ '.*': '(.*)',?/\1/g")

Explanations:

npm version gives you all the information
grep @ catches the line where you have the version
sed -re "s/\{ '.*': '(.*)',?/\1/g" replaces the text by just the version number

score 0 · Answer 5 · answered Jan 21 '21 at 16:25

If your project is backed by git and you are letting npm version tag your builds, you can probably leverage git describe:

echo The current build is \"`git describe`\". 
==> The current build is "v0.0.2".

It's not technically using npm to get the version, but it's what I ended up using after trying to find a 'real' npm based solution and finding this SO that makes it quite clear that there isn't a nice clean command available.

How do I get current package's version using only npm

5 Answers5