feat: Add ECMAScript 6 (ES6) support

.github/workflows/ci.yml

@@ -20,22 +20,14 @@ jobs:
     timeout-minutes: 15
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Use Node.js ${{ matrix.NODE_VERSION }}
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.NODE_VERSION }}
-      - name: Cache Node.js modules
-        uses: actions/cache@v2
-        with:
-          path: ~/.npm
-          key: ${{ runner.os }}-node-${{ matrix.NODE_VERSION }}-${{ hashFiles('**/package-lock.json') }}
-          restore-keys: |
-              ${{ runner.os }}-node-${{ matrix.NODE_VERSION }}-
+          cache: npm
       - name: Install dependencies
         run: npm ci
-      - name: Build package
-        run: npm run build
       - name: Run tests
         run: npm run test
       - name: Code coverage

.gitignore

@@ -34,3 +34,6 @@ node_modules
 
 # Optional REPL history
 .node_repl_history
+
+# Mac DS_Store files
+.DS_Store

.nycrc

@@ -1,10 +1,13 @@
 {
+  "all": true,
   "reporter": [
     "lcov",
     "text-summary"
   ],
+  "include": [
+    "src/**/*.js"
+  ],
   "exclude": [
-    "**/spec/**",
-    "lib/"
+    "**/spec/**"
   ]
-}
+}