Add New Window Warning Fix #934

	name: Lint JS

	on:
	# Run on pushes to select branches and on all pull requests.
	push:
	branches:
	- main
	- develop
	- trunk
	- 'feature/**'
	- 'release/**'
	- 'hotfix/[0-9]+.[0-9]+*'
	pull_request:
	# Allow manually triggering the workflow.
	workflow_dispatch:

	# Cancels all previous workflow runs for the same branch that have not yet completed.
	concurrency:
	# The concurrency group contains the workflow name and the branch name.
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	jobs:
	lint:
	runs-on: ubuntu-latest

	name: "Lint: JS"

	steps:
	- name: Checkout code
	uses: actions/checkout@v3

	# Cache the Node.js modules to speed up the workflow.
	- name: Cache Node.js modules
	uses: actions/cache@v2
	with:
	path: node_modules
	key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}
	restore-keys: \|
	${{ runner.os }}-node-

	# The lint stage doesn't run the unit tests or use code style, so no need for PHPUnit, WPCS or phpcompatibility.
	- name: 'Install NPM packages'
	run: npm install --ignore-scripts

	# Only run ESLint on changed JavaScript files.
	- name: 'Get changed JavaScript files'
	id: jsfiles
	run: \|
	echo "JS_FILES<<EOF" >> $GITHUB_ENV
	git diff --name-only ${{ github.event.before }} ${{ github.sha }} \| grep '\.js$' \|\| echo ""
	echo "EOF" >> $GITHUB_ENV

	- name: 'Run ESLint'
	if: env.JS_FILES != ''
	run: npm run lint:js -- ${{ env.JS_FILES }}

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