This repo includes basic tests to see how well Lighthouse measures Core Web Vitals.
Specifically, I'm looking for buggy behavior—situations where Lighthouse reports something unexpected for FCP, CLS, etc.
I've added http-server
to load the test pages locally, and a rough npm test
command to quickly batch-run Lighthouse tests.
npm install
npm start
npm test
Open the HTML files in the lighthouse/
folder to see the reports.
By default, npm test
only checks the FCP Opacity test. To test other pages, edit the test
script in package.json
and change the paths to the page you want to test. (I'll improve this soon.)