Disclaimer: This is a very specific problem. It is relevant only if you had a travis ci pipeline setup for your GitHub repository and using nyc and coveralls, and thinking of migrating to GitHub actions.

The Past

I followed this setup guide: Integrating with coveralls.io

The Problem

I thought of migrating the build pipeline to GitHub Actions, but was hindered by this error:

> js-big-decimal@1.3.3 coverage /home/runner/work/js-big-decimal/js-big-decimal
> nyc report --reporter=text-lcov | coveralls


/home/runner/work/js-big-decimal/js-big-decimal/node_modules/coveralls/bin/coveralls.js:19
      throw err;
      ^
Bad response: 422 {"message":"Couldn't find a repository matching this job.","error":true}
(Use `node --trace-uncaught ...` to show where the exception was thrown)
npm ERR! code ELIFECYCLE

Now time to reveal the solution:

The Solution:

• Edit the coverage script in package.json to use the default reporter of lcov

  "coverage": nyc report --reporter=lcov
  

• Modify the pipeline to use the official Coveralls stage

      - name: Test
        run: |
          npm run ci-test
          npm run coverage
  
      - name: Publish to coveralls.io
        uses: coverallsapp/github-action@v1.1.2
        with:
          github-token: ${{ github.token }}
  

If you need a working example, check JS Big Decimal