Bump actions/checkout from 3 to 4 #51

	name: Node.js CI
	on:
	push:
	branches:
	- main
	pull_request:
	branches:
	- main
	jobs:
	build:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	node-version: ['16', '18']
	steps:
	- uses: actions/checkout@v4
	- name: Install Node.js
	uses: actions/setup-node@v3
	with:
	node-version: ${{ matrix.node-version }}
	- name: NPM Install
	run: npm ci
	- name: Run eslint linter
	run: npx eslint --max-warnings 0 .
	- name: Run TypeScript compiler
	run: npx tsc -p .
	- name: Run Prettier code style checks
	run: npx prettier -c .
	- name: Run unit tests
	run: npm run test
	- name: Upload to Codecov.io
	uses: codecov/codecov-action@v3

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