test branch 3 #9

	name: Lockfile

	on:
	pull_request:
	concurrency:
	group: '${{ github.workflow }}-${{ github.head_ref \|\| github.ref }}'
	cancel-in-progress: true

	jobs:
	verify-yarn-lock:
	name: No manual yarn.lock edits
	runs-on: ubuntu-latest
	steps:
	- name: Check out PR HEAD
	uses: actions/checkout@v3
	with:
	fetch-depth: 0

	- name: Fetch base branch
	run: git fetch origin ${{ github.base_ref }} --depth=1

	- name: Install node
	uses: actions/setup-node@v4
	with:
	node-version-file: .nvmrc

	- name: Reset yarn.lock to base
	run: git show "origin/${{ github.base_ref }}:yarn.lock" > yarn.lock

	- name: Yarn install
	uses: Wandalen/wretry.action@master
	with:
	# Fine to skip scripts since we don't run any code
	command: yarn install --ignore-scripts
	attempt_limit: 3
	attempt_delay: 2000

	- name: Verify yarn.lock
	run: \|
	git diff --quiet --exit-code \|\| {
	echo '::error::`yarn.lock` does not match what Yarn would generate given the base `yarn.lock` and the head `package.json`.'
	echo '::error:: - If this is intentional, you can ignore this check.'
	echo '::error:: - If this is unintentional, apply the following diff:'
	git --no-pager diff
	exit 1
	}

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