chore(workflows): run tests before publishing a new version to npm

Author: plumdumpling

.github/workflows/publish.yml

@@ -1,15 +1,16 @@
 name: Publish package
+
 on:
   push:
     tags:
       - "v*" # Push events to matching v*, i.e. v1.0, v20.15.10
+
 jobs:
   create-release:
     name: Create Release
     runs-on: ubuntu-latest
     outputs:
       upload_url: ${{ steps.create_release.outputs.upload_url }}
-
     steps:
       - name: Create Release
         id: create_release
@@ -26,12 +27,27 @@ jobs:
     name: Publish to NPM
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-node@v2
+      - name: Checkout repository from GitHub
+        uses: actions/checkout@v2.3.1
+      - name: Setup npm
+        uses: actions/setup-node@v2
         with:
-          node-version: "12.x"
+          node-version: "15"
           registry-url: "https://registry.npmjs.org"
-      - run: npm install
-      - run: npm publish --access public
+      # npm cache folder is in ~/, not within the working directory
+      - name: Cache npm directory
+        uses: actions/cache@v2
+        with:
+          path: ~/.npm
+          key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}
+          restore-keys: |
+            ${{ runner.os }}-node-
+      # Node auth token is needed for private GitHub registry
+      - name: Install dependencies
+        run: npm install
+      - name: Run tests
+        run: npm run test
+      - name: Publish
+        run: npm publish --access public
         env:
           NODE_AUTH_TOKEN: ${{ secrets.NPM_BOT_ACCESS_TOKEN }}