Automate npm publish npm via actions

.github/workflows/publish.yml

@@ -0,0 +1,41 @@
+name: NPM Publish
+
+env:
+  NODE_VERSION: 16
+
+on:
+  push:
+    tags: v*
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - uses: actions/setup-node@v2
+        with:
+          node-version: ${{ env.NODE_VERSION }}
+          registry-url: https://registry.npmjs.org/
+          cache: npm
+
+      - run: node --version
+      - run: npm --version
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Build
+        run: npm run build
+        env:
+          NODE_ENV: production
+
+      - name: Tests
+        run: npm run test
+
+      - name: Publish to NPM
+        run: npm publish
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}

.github/workflows/tests.yml

@@ -19,7 +19,7 @@ jobs:
 
       - uses: actions/setup-node@v2
         with:
-          node-version: ${{env.NODE_VERSION}}
+          node-version: ${{ env.NODE_VERSION }}
           cache: npm
 
       - run: node --version