Adding vitest coverage using github workflow

.github/workflows/node.js.yml

@@ -1,31 +1,61 @@
 # This workflow will do a clean installation of node dependencies, cache/restore them, build the source code and run tests across different versions of node
-# For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-nodejs
+# For more information see: https://github.com/marketplace/actions/vitest-coverage-report
 
-name: Node.js CI
+name: Node.js Test Coverage Report
 
 on:
   push:
-    branches: [ "main" ]
+    branches: ["main"]
   pull_request:
-    branches: [ "main" ]
 
 jobs:
-  build:
-
+  test:
     runs-on: ubuntu-latest
 
     strategy:
       matrix:
         node-version: [20.x]
-        # See supported Node.js release schedule at https://nodejs.org/en/about/releases/
+        branch:
+          - ${{ github.head_ref }}
+          - "main"
+    permissions:
+      # Required to checkout the code
+      contents: read
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          ref: ${{ matrix.branch }}
+      - name: Use Node.js 20.x
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20.x
+          cache: "npm"
+      - name: "Install Deps"
+        run: npm ci
+      - name: "Build"
+        run: npm run build
+      - name: "Test"
+        run: npm run coverage-summary
+      - name: "Upload Coverage"
+        uses: actions/upload-artifact@v4
+        with:
+          name: coverage-${{ matrix.branch }}
+          path: coverage
 
+  report-coverage:
+    needs: test
+    runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
-    - name: Use Node.js 20.x
-      uses: actions/setup-node@v4
-      with:
-        node-version: 20.x
-        cache: 'npm'
-    - run: npm ci
-    - run: npm run build
-    - run: npm test
+      - name: "Download Coverage Artifacts"
+        uses: actions/download-artifact@v4
+        with:
+          name: coverage-${{ github.head_ref }}
+          path: coverage
+      - uses: actions/download-artifact@v4
+        with:
+          name: coverage-main
+          path: coverage-main
+      - name: "Vitest Coverage Differences from main"
+        uses: davelosert/vitest-coverage-report-action@v2
+        with:
+          json-summary-compare-path: coverage-main/coverage-summary.json

package.json

@@ -6,6 +6,7 @@
     "build": "node esbuild.js",
     "test": "vitest",
     "coverage": "vitest run --coverage",
+    "coverage-summary": "vitest run --coverage.enabled --reporter=json --coverage.reporter=json-summary",
     "watch": "npm-watch"
   },
   "watch": {

vitest.config.js

@@ -2,8 +2,16 @@ import { defineConfig } from "vitest/config";
 export default defineConfig({
   coverage: {
     enabled: true,
+    reporter: [
+      ["json-summary", { file: "coverage-summary.json" }],
+      "json",
+      "json-summary-compare-path",
+      "text",
+    ],
+    reportOnFailure: true,
   },
   test: {
     environment: "jsdom",
+    reporters: process.env.GITHUB_ACTIONS ? ["dot", "github-actions"] : ["dot"],
   },
 });