Merge Coverage Reports Using lcov-result-merger

.github/workflows/pull-request.yml

@@ -217,9 +217,7 @@ jobs:
       - name: Merge Coverage Reports
         if: steps.changed-files.outputs.only_changed != 'true'
         run: |
-          mkdir -p ./coverage
-          npx nyc merge ./.nyc_output || exit 1
-          mv coverage.json ./coverage/lcov.info     
+          npx lcov-result-merger 'coverage/*/lcov.info' > 'coverage/lcov.info'     
       
       - name: TypeScript compilation for changed files
         run: |
@@ -228,14 +226,15 @@ jobs:
               npx tsc --noEmit "$file"
             fi
           done
-        
-      - name: Present and Upload coverage to Codecov as ${{env.CODECOV_UNIQUE_NAME}}
+
+      - name: Upload Coverage to Codecov
         uses: codecov/codecov-action@v4
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
           verbose: true
-          fail_ci_if_error: false
+          files: './coverage/lcov.info'
           name: '${{env.CODECOV_UNIQUE_NAME}}'
+          fail_ci_if_error: false
 
       - name: Test acceptable level of code coverage
         uses: VeryGoodOpenSource/very_good_coverage@v2

package.json

@@ -40,6 +40,7 @@
     "i18next-http-backend": "^2.6.1",
     "inquirer": "^8.0.0",
     "js-cookie": "^3.0.1",
+    "lcov-result-merger": "^5.0.1",
     "markdown-toc": "^1.2.0",
     "prettier": "^3.3.3",
     "prop-types": "^15.8.1",