Made jest file for munsell.js #3127

	name: ESLint

	on:
	pull_request:
	branches: [master]

	jobs:
	build:
	name: Lint updated JavaScript files with ESLint

	runs-on: ubuntu-20.04

	steps:
	- name: Checkout code
	uses: actions/checkout@v3
	with:
	fetch-depth: 0
	ref: ${{ github.event.pull_request.head.sha }}

	- name: Use Node.js
	uses: actions/setup-node@v1
	with:
	node-version: 12.x

	- name: Get changed files
	id: getfile
	run: \|
	CHANGED_FILES="$(git diff --name-only ${{ github.event.pull_request.base.sha }}..${{ github.event.pull_request.head.sha }} \| xargs)"
	export CHANGED_FILES # the export command will fail if the inner shell expansion failed
	echo "files=$CHANGED_FILES" >> $GITHUB_OUTPUT

	- name: Install ESLint
	run: npm install eslint

	- name: Lint changed files using ESLint
	run: \|
	for i in ${{ steps.getfile.outputs.files }}
	do
	if [[ "$i" == "D" ]]
	then
	ignore=1
	elif [[ ( "$i" == "M" ) \|\| ( "$i" == "A" ) \|\| ( "$i" == "R" ) \|\| ( "$i" == "C" ) \|\| ( "$i" == "U" ) ]]
	then
	ignore=0
	fi
	echo "file $i $ignore"
	if [[ "$i" == *".js" && $ignore == 0 ]]
	then
	echo "linting $i"
	npx eslint $i
	fi
	done

Provide feedback