Update thread headers and ancestry to deep link back to the original comment using comment linking #31909

	name: TypeScript Checks

	on:
	workflow_call:
	pull_request:
	types: [opened, synchronize]
	branches-ignore: [staging, production]
	paths: ['.js', '.ts', '**.tsx', 'package.json', 'package-lock.json', 'tsconfig.json']

	jobs:
	typecheck:
	if: ${{ github.actor != 'OSBotify' \|\| github.event_name == 'workflow_call' }}
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4

	- uses: ./.github/actions/composite/setupNode

	- name: Type check with TypeScript
	run: npm run typecheck
	env:
	CI: true

	- name: Check for new JavaScript files
	run: \|
	git fetch origin main --no-tags --depth=1

	# Explanation:
	# - comm is used to get the intersection between two bash arrays
	# - git diff is used to see the files that were added on this branch
	# - gh pr view is used to list files touched by this PR. Git diff may give false positives if the branch isn't up-to-date with main
	# - wc counts the words in the result of the intersection
	count_new_js=$(comm -1 -2 <(git diff --name-only --diff-filter=A origin/main HEAD -- 'src/*.js') <(gh pr view ${{ github.event.pull_request.number }} --json files \| jq -r '.files \| map(.path) \| .[]') \| wc -l)
	if [ "$count_new_js" -gt "0" ]; then
	echo "ERROR: Found new JavaScript files in the project; use TypeScript instead."
	exit 1
	fi
	env:
	GITHUB_TOKEN: ${{ github.token }}

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