update workflow due to deprecated command 'set-output'; #9

	name: Build and Publish to npm

	on:
	push:
	branches:
	- main

	jobs:
	build-and-test:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	node-version: ['14.x', '16.x', '20.4.0']
	steps:
	- name: Checkout repository
	uses: actions/checkout@v2

	- name: Setup Node.js
	uses: actions/setup-node@v2
	with:
	node-version: ${{ matrix.node-version }}

	- name: Install dependencies
	run: npm install

	- name: Build
	run: npm run build

	publish:
	needs: build-and-test
	runs-on: ubuntu-latest
	steps:
	- name: Checkout repository
	uses: actions/checkout@v2

	- name: Setup Node.js
	uses: actions/setup-node@v2
	with:
	node-version: '14.x'
	registry-url: 'https://registry.npmjs.org'

	- name: Extract version from package.json
	run: echo "VERSION=$(node -p "require('./package.json').version")" >> $GITHUB_ENV

	- name: Check if version already published
	run: \|
	echo "Checking version: ${{ env.VERSION }}"
	NPM_VIEW_OUTPUT=$(npm view epsillajs@${{ env.VERSION }})
	echo "npm view output: $NPM_VIEW_OUTPUT"
	if [ -n "$NPM_VIEW_OUTPUT" ]; then
	echo "Version ${{ env.VERSION }} already exists on npm. Please update the version."
	exit 1
	fi

	- name: Bump version and push tag
	uses: mathieudutour/[email protected]
	with:
	github_token: ${{ secrets.PAT_TOKEN }}
	tag_prefix: "v"
	custom_tag: ${{ env.VERSION }}
	dry_run: false

	- name: Publish to npm
	run: npm publish
	env:
	NODE_AUTH_TOKEN: ${{ secrets.NPM_ACCESS_TOKEN }}

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