chore: separate build-standalone with coverage (#10905)

* chore: separate build-standalone with coverage

* style polish

.github/workflows/coverage.yml

@@ -22,15 +22,8 @@ jobs:
       - name: Generate coverage report
         run: |
           yarn --version
-          make test-ci-coverage
-          # Builds babel-standalone with the regular Babel config
-          # test-ci-coverage doesn't test babel-standalone, as trying to gather coverage
-          IS_PUBLISH=true make build-standalone
-          # data for a JS file that's several megabytes large is bound to fail. Here,
-          # we just run the babel-standalone test separately.
-          yarn jest "\-standalone/test"
+          make -j test-ci-coverage
       - name: Upload coverage report
         uses: codecov/codecov-action@v1
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
-