add benchmarks for creating sourcemaps #69

	name: Test
	on:
	push:
	branches:
	- main
	pull_request:
	permissions:
	contents: read
	jobs:
	test:
	name: Test
	runs-on: ubuntu-latest
	steps:
	- name: Checkout the repository
	uses: actions/checkout@v2
	- name: Install pnpm
	uses: pnpm/action-setup@v2
	with:
	version: 8
	- name: Install Node.js
	uses: actions/setup-node@v3
	with:
	node-version: 20
	cache: pnpm
	- name: Install dependencies
	run: pnpm install --frozen-lockfile
	- name: Run tests
	run: pnpm test

Provide feedback