feat: allow undefined value to e.g. show a placeholder #2

	name: 'Check PR'

	on:
	pull_request_target:
	types:
	- opened
	- synchronize
	- reopened

	jobs:
	check-code:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout code
	uses: actions/checkout@v2
	with:
	fetch-depth: 0
	- name: Setup Node.js
	uses: actions/setup-node@v2
	with:
	node-version: '20'
	- name: Install dependencies
	run: yarn install --frozen-lockfile
	- name: Lint code
	run: yarn lint
	- name: Build library code
	run: yarn build
	check-versioning:
	runs-on: ubuntu-latest
	steps:
	- uses: amannn/[email protected]
	env:
	GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

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