[ci] several more tweaks to compat check workflow (#3785) #583

	name: Build & Test PR w/ GraphQL Regressions
	on:
	push:
	# only on merge to main.
	# it's rare that this workflow would
	# show us an error, but when it does it's important!
	branches:
	- main
	# don't run this regression suite if we don't need to
	paths-ignore:
	- '**.md'
	- 'examples'
	- '!examples/monaco-graphql-webpack'

	# TODO: test matrix?

	permissions:
	contents: read # to fetch code (actions/checkout)

	jobs:
	build:
	name: Build & Test
	runs-on: ubuntu-20.04
	strategy:
	matrix:
	release:
	# test against the latest 16.x version, which might be newer than what we have
	- '^16'
	# test against the oldest version we support
	- '^16.0.0'
	# test against the latest alpha
	- '^17.0.0-alpha'
	steps:
	- name: Checkout Code
	uses: actions/checkout@v4

	- uses: actions/setup-node@v4
	with:
	cache: yarn
	- name: Cache node modules
	uses: actions/cache@v4
	with:
	path: node_modules
	key: node_modules-${{hashFiles('yarn.lock')}}
	restore-keys: node_modules-
	- name: Force GraphQL ${{ matrix.release }} solution
	run: yarn repo:resolve graphql@${{ matrix.release }}

	- run: yarn install --frozen-lockfile --immutable

	- name: Unit Tests
	run: yarn test:ci

	- name: Cypress
	run: yarn e2e

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