chore: add npm publish pipeline (#6)

* chore: add npm publish pipeline

* chore: publish only if tests passed successfully

.github/workflows/release.yaml

@@ -3,11 +3,10 @@
 name: Release to NPM
 
 # Controls when the action will run. Triggers the workflow on push or pull request
-# events but only for the master branch
+# events but only for the main branch
 on:
   push:
-    tags:
-      - '*'
+    branches: [ main ]
 
 # A workflow run is made up of one or more jobs that can run sequentially or in parallel
 jobs:
@@ -24,10 +23,10 @@ jobs:
     - uses: actions/checkout@v2
 
       # Set up Node
-    - name: Use Node 12
+    - name: Use Node 16
       uses: actions/setup-node@v1
       with:
-        node-version: 12
+        node-version: 16
         registry-url: 'https://registry.npmjs.org'
 
       # Run install dependencies
@@ -44,5 +43,6 @@ jobs:
 
       # Publish to npm
     - run: npm publish --access public
+      if: ${{ success() }}
       env:
         NODE_AUTH_TOKEN: ${{secrets.NPM_TOKEN}}