feat: allow config of before_send function to edit or reject events #3648

	name: TestCafe
	on: [pull_request]
	env:
	BROWSERSTACK_ACCESS_KEY: "${{ secrets.BROWSERSTACK_ACCESS_KEY }}"
	BROWSERSTACK_USERNAME: "${{ secrets.BROWSERSTACK_USERNAME }}"
	POSTHOG_PROJECT_KEY: "${{ secrets.POSTHOG_PROJECT_KEY }}"
	POSTHOG_API_KEY: "${{ secrets.POSTHOG_API_KEY }}"
	BROWSERSTACK_DEBUG: 'true'
	BROWSERSTACK_NETWORK_LOGS: 'true'
	BROWSERSTACK_CONSOLE: 'info'
	BROWSERSTACK_FORCE_PROXY: 'true'
	BROWSERSTACK_USE_AUTOMATE: 'true'
	BROWSERSTACK_PROJECT_NAME: 'PostHog JS SDK'

	jobs:
	browsers:
	name: Test on ${{ matrix.name }}
	runs-on: ubuntu-latest

	strategy:
	matrix:
	browser:
	- 'chrome:headless'
	- 'firefox:headless'
	- 'browserstack:ie'
	- 'browserstack:safari'
	include:
	- browser: 'chrome:headless'
	name: Chrome
	- browser: 'firefox:headless'
	name: Firefox
	- browser: 'browserstack:ie'
	name: IE11
	- browser: 'browserstack:safari'
	name: Safari

	steps:
	- uses: actions/checkout@v4
	- uses: pnpm/action-setup@v4
	with:
	version: 8.x.x
	- uses: actions/setup-node@v4
	with:
	node-version: '18'
	cache: 'pnpm'

	- name: Serve static files
	run: python -m http.server 8080 &

	- name: Install node dependencies
	run: pnpm install

	- name: Set up posthog-js
	run: pnpm build-rollup

	- name: Run ${{ matrix.name }} test
	env:
	BRANCH_NAME: ${{ github.head_ref \|\| github.ref_name }}
	RUN_ID: ${{ github.run_id }}
	BROWSER: ${{ matrix.browser }}
	run: pnpm testcafe ${{ matrix.browser }} --stop-on-first-fail

	- name: Check ${{ matrix.name }} events
	run: pnpm check-testcafe-results

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