Extract version from package.json (NPM) using bash / shell

get-npm-package-version

# Version key/value should be on his own line
PACKAGE_VERSION=$(cat package.json \
  | grep version \
  | head -1 \
  | awk -F: '{ print $2 }' \
  | sed 's/[",]//g')

echo $PACKAGE_VERSION

I just wanted to add an alternative solution I came up with: https://github.com/optum/semver-cli

This is a tool dedicated to getting/setting/incrementing semantic versions. It also has the ability to synchronize various code files as you increment which then makes it easier to access the version from code in different ways.

.github/version.yml

on:
  post:
    - kind: patch
      file: package.json
    - kind: regexp
      pattern: '(?<=export const version = ").*(?=";)'
      file: src/version.js
    - kind: regexp
      pattern: '(?<=example@).*(?=\/main.js)'
      file: README.md

src/version.js

export const version = "0.1.0";

README.md

# Example
```js
import * as example from "example@0.1.0";
```

package.json

{
  "version": "0.1.0"
}

VERSION

0.1.0

Then to get it from the shell:

VERSION=$(semver get)

To get it in code:

main.js

import { version } from "./src/version.js";
console.log(version);

And packagej.son, package-lock.json, src/version.js, README.md and the VERSION file are all in sync with each other and can be incremented simultaneously with the following command:

semver inc minor

Which will set them all to 0.2.0 of course.

This worked for me
cat package.json | grep \"version\" | cut -d'"' -f 4

node -p -e "require('./package.json').version"

cat package.json | jq -r '.version' works on github actions

Easier:
jq -r .version package.json

real	0m0,021s
user	0m0,020s
sys	0m0,000s