more cleanup #2

	name: Test Polyfills
	on:
	pull_request:
	workflow_dispatch:

	concurrency:
	group: browserstack
	cancel-in-progress: false

	jobs:
	# Branch-based pull request
	test:
	runs-on: ubuntu-latest
	strategy:
	max-parallel: 1
	fail-fast: false
	matrix:
	browser: [ ie, android, chrome, edge, firefox, ios, safari ]
	steps:

	- name: Branch based PR checkout
	uses: actions/checkout@v2
	with:
	fetch-depth: 50

	# Fetch master branch to determine which polyfills have changed and need testing.
	- name: Fetch upstream to determine diff
	run: \|
	git remote add upstream https://github.com/mrhenry/polyfill-library.git
	git fetch --depth=50 upstream master

	# <insert integration tests needing secrets>
	- uses: actions/setup-node@v2.2.0
	with:
	node-version: 16.x
	cache: 'npm'

	- name: env
	run: echo "commit-sha=$(echo ${GITHUB_SHA})" >> $GITHUB_ENV

	- run: npm ci

	- name: cache __dist
	id: cache-dist
	uses: actions/cache@v2.1.5
	with:
	path: polyfills/__dist
	key: cache--dist--${{ env.commit-sha }}

	- run: npm run build
	if: steps.cache-dist.outputs.cache-hit != 'true'

	- name: Test ${{ matrix.browser }}
	run: node ./test/polyfills/server.js & node ./test/polyfills/remotetest.js
	test-modified-only targeted director browser=${{ matrix.browser }}
	timeout-minutes: 30
	env:
	BROWSERSTACK_USERNAME: ${{ secrets.BROWSERSTACK_USERNAME }}
	BROWSERSTACK_ACCESS_KEY: ${{ secrets.BROWSERSTACK_ACCESS_KEY }}

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