migrate to c8 (#996)

* migrate to c8

* remove cross-env

* report coverages from lib/*.js only

* bump codecov-action to v3

* merge coverage job with lint job

* remap coverage to source files

* add lcov reporter

.c8rc.json

@@ -0,0 +1,6 @@
+{
+  "all": true,
+  "src": ["./src"],
+  "include": ["lib/**"],
+  "reporter": ["lcov", "text"]
+}

.github/workflows/ci.yml

@@ -6,19 +6,6 @@ permissions:
   contents: read #  to fetch code (actions/checkout)
 
 jobs:
-  lint:
-    name: lint
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-node@v3
-        with:
-          node-version: latest
-          cache: 'yarn'
-      - name: Install dependencies
-        run: yarn
-      - name: Lint
-        run: yarn run lint
   test:
     name: Test - ${{ matrix.os }} - Node ${{ matrix.node-version }}, Webpack ${{ matrix.webpack-version }}
     strategy:
@@ -30,10 +17,6 @@ jobs:
           - node-version: "14.15.0" # The minimum supported node version
             webpack-version: latest
             os: ubuntu-latest
-          - node-version: latest
-            webpack-version: latest
-            os: ubuntu-latest
-            coverage: true
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v3
@@ -48,13 +31,29 @@ jobs:
         run: yarn add -D webpack@${{ matrix.webpack-version }}
       - name: Build babel-loader
         run: yarn run build
-        env:
-          BABEL_ENV: test
       - name: Run tests for webpack version ${{ matrix.webpack-version }}
         run: yarn test-only
+
+  lint-coverage:
+    name: Lint and Coverage - ${{ matrix.os }} - Node ${{ matrix.node-version }}, Webpack 5
+    strategy:
+      matrix:
+        os: [ubuntu-latest]
+        node-version: [latest]
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v3
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v3
+        with:
+          node-version: ${{ matrix.node-version }}
+          cache: 'yarn'
+      - name: Install dependencies
+        run: yarn
+      - name: Run lint and coverage tests
+        run: yarn test
       - name: Submit coverage data to codecov
-        uses: codecov/codecov-action@v1
-        if: ${{ matrix.coverage }}
+        uses: codecov/codecov-action@v3
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
 

babel.config.json

@@ -5,12 +5,8 @@
   "presets": [
     ["@babel/preset-env", {
       "loose": true,
+      "bugfixes": true,
       "modules": false
     }]
-  ],
-  "env": {
-    "test": {
-      "plugins": ["istanbul"]
-    }
-  }
+  ]
 }

package.json

@@ -24,17 +24,15 @@
     "@babel/preset-env": "^7.19.4",
     "ava": "^3.13.0",
     "babel-eslint": "^10.1.0",
-    "babel-plugin-istanbul": "^6.1.1",
     "babel-plugin-react-intl": "^8.2.25",
-    "cross-env": "^7.0.2",
+    "c8": "^8.0.0",
     "eslint": "^7.13.0",
     "eslint-config-babel": "^9.0.0",
     "eslint-config-prettier": "^6.3.0",
     "eslint-plugin-flowtype": "^5.2.0",
     "eslint-plugin-prettier": "^3.0.0",
     "husky": "^4.3.0",
     "lint-staged": "^10.5.1",
-    "nyc": "^15.1.0",
     "pnp-webpack-plugin": "^1.6.4",
     "prettier": "^2.1.2",
     "react": "^17.0.1",
@@ -52,8 +50,8 @@
     "precommit": "lint-staged",
     "prepublish": "yarn run clean && yarn run build",
     "preversion": "yarn run test",
-    "test": "yarn run lint && cross-env BABEL_ENV=test yarn run build && yarn run test-only",
-    "test-only": "nyc ava"
+    "test": "yarn run lint && yarn run build --source-maps && c8 yarn run test-only",
+    "test-only": "ava"
   },
   "repository": {
     "type": "git",
@@ -118,8 +116,5 @@
       "node ./scripts/yarn-install.js",
       "git add yarn.lock"
     ]
-  },
-  "resolutions": {
-    "nyc/node-preload": "0.2.0"
   }
 }