chore: test on webpack-plugin v5

.github/workflows/node.js.yml

@@ -42,6 +42,48 @@ jobs:
         run: |
           yarn
           yarn add --dev html-webpack-plugin@${{matrix.html-plugin-version }}
+          git checkout
+      - name: run tests
+        run: yarn cover
+      - uses: codecov/codecov-action@v1
+        if: ${{ always() }}
+  test-node-webpack-5:
+    name:
+      # prettier-ignore
+      Test on Node.js v${{ matrix.node-version }} and html-webpack-plugin v${{ matrix.html-plugin-version }} and webpack v${{ matrix.webpack-version }}
+    strategy:
+      fail-fast: false
+      matrix:
+        node-version: [10.x, 12.x, 14.x, 15.x]
+        html-plugin-version: [4, 5]
+        webpack-version: [4, 5]
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+      - name: Get yarn cache directory path
+        id: yarn-cache-dir-path
+        run: echo "::set-output name=dir::$(yarn cache dir)"
+      - uses: actions/cache@v2
+        id: yarn-cache
+        with:
+          path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
+          key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-yarn-
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v2
+        with:
+          node-version: ${{ matrix.node-version }}
+      # prettier-ignore
+      - name: install with html-webpack-plugin v${{matrix.html-plugin-version }} and webpack v${{ matrix.webpack-version }}
+        run: |
+          yarn
+          yarn add --dev html-webpack-plugin@${{matrix.html-plugin-version }} webpack@${{ matrix.webpack-version }}
+          git checkout
+
       - name: run tests
         run: yarn cover
       - uses: codecov/codecov-action@v1
@@ -127,7 +169,7 @@ jobs:
       # prettier-ignore
       ${{ github.event_name == 'push' && github.event.ref == 'refs/heads/main' }}
     name: Release new version
-    needs: [lint, test-node, test-os, test-browser]
+    needs: [lint, test-node, test-node-webpack-5, test-os, test-browser]
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2

package.json

@@ -67,8 +67,8 @@
     "webpack-cli": "^3.1.0"
   },
   "peerDependencies": {
-    "html-webpack-plugin": "^3.0.4 || ^4.0.0-0",
-    "webpack": "^4.0.0"
+    "html-webpack-plugin": "^3.0.4 || ^4.0.0-0 || ^5.0.0-0",
+    "webpack": "^4.0.0 || ^5.0.0"
   },
   "engines": {
     "node": ">=6"

src/index.js

@@ -18,9 +18,9 @@ const fsReadFileAsync = promisify(fs.readFile);
 
 /**
  * Pushes the content of the given filename to the compilation assets
- * @param {string} resolvedFilename
+ * @param {string} filename
  * @param {WebpackCompilation} compilation
- * @returns {string} file basename
+ * @returns {Promise<string>} file basename
  */
 function addFileToAssetsWebpack5(filename, compilation) {
   const resolvedFilename = path.resolve(compilation.compiler.context, filename);