Add polyfill #124281

	on:
	pull_request_target:
	types: [opened]
	push:
	name: Pull request automation

	jobs:
	pull-request-automation:
	runs-on: ubuntu-latest
	if: ${{ github.repository == 'WordPress/gutenberg' }}
	strategy:
	matrix:
	node: ['16']

	steps:
	# Checkout defaults to using the branch which triggered the event, which
	# isn't necessarily `trunk` (e.g. in the case of a merge).
	- uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608 # v4.1.0
	with:
	ref: trunk
	show-progress: ${{ runner.debug == '1' && 'true' \|\| 'false' }}

	- name: Use desired version of Node.js
	uses: actions/setup-node@5e21ff4d9bc1a8cf6de233a3057d20ec6b3fb69d # v3.8.1
	with:
	node-version: ${{ matrix.node }}

	- name: Cache NPM packages
	uses: actions/cache@704facf57e6136b1bc63b828d79edcd491f0ee84 # v3.3.2
	with:
	# npm cache files are stored in `~/.npm` on Linux/macOS
	path: ~/.npm
	key: ${{ runner.os }}-node-${{ matrix.node }}-npm-pr-automation-cache-${{ hashFiles('**/package-lock.json') }}

	# Changing into the action's directory and running `npm install` is much
	# faster than a full project-wide `npm ci`.
	- name: Install NPM dependencies
	run: npm install
	working-directory: packages/project-management-automation

	- uses: ./packages/project-management-automation
	with:
	github_token: ${{ secrets.GITHUB_TOKEN }}

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