Uses os.cpus to figure out how many logical cores are available on the runner.
name: Node CI
on:
push:
branches:
- main
pull_request:
branches:
- "**"
jobs:
test:
strategy:
matrix:
os: [ubuntu-latest, macOS-latest, windows-latest]
runs-on: ${{ matrix.os }}
steps:
- name: Get number of CPU cores
uses: SimenB/github-actions-cpu-cores@v1
id: cpu-cores
- name: run tests
run: npx jest --max-workers ${{ steps.cpu-cores.outputs.count }}