Configure automatic docs generation #6

	name: Update docs

	on:
	pull_request:
	branches: [main]

	permissions:
	contents: write

	jobs:
	update-docs:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4

	- uses: actions/checkout@v4
	with:
	ref: "gh-pages"
	repository: ${{ github.event.pull_request.head.repo.full_name }}
	path: "docs"

	- uses: actions/setup-node@v4
	with:
	node-version: 18
	registry-url: https://registry.npmjs.org/

	- name: Install dependencies
	run: \|
	npm install -g @microsoft/api-extractor

	# https://github.com/microsoft/rushstack/issues/4586
	npm install -g @microsoft/api-documenter@7.23.38

	- name: Re-generate docs
	run: \|
	MAJOR_VERSION=v$(node -p "require('./package.json').version.split('.')[0]")
	DOCS_OUTPUT_FOLDER=${GITHUB_WORKSPACE}/docs/${MAJOR_VERSION}

	mkdir -p ./etc
	mkdir -p $DOCS_OUTPUT_FOLDER

	npm ci
	npm run api:extract
	DOCS_OUTPUT_FOLDER=$DOCS_OUTPUT_FOLDER npm run api:document

	cd ${GITHUB_WORKSPACE}/docs

	# See: https://github.com/actions/checkout/blob/main/README.md#push-a-commit-using-the-built-in-token
	git config user.name github-actions
	git config user.email github-actions@github.com
	git commit -am "Re-generated docs." --allow-empty
	git push

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