Added githib action to publish package

.github/workflows/npmpublish.yml

@@ -0,0 +1,56 @@
+name: Node.js Package
+
+on:
+  release:
+    types: [created]
+
+jobs:
+
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v1
+        with:
+          node-version: 12
+      - run: npm ci
+      - run: npm test
+
+  publish-npm:
+    env:
+      tag: ${{ github.event.release.tag_name }}
+    needs: build
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v1
+        with:
+          node-version: 12
+          registry-url: https://registry.npmjs.org/
+      - run: npm ci
+      - run: git config --global user.email "[email protected]"
+      - run: git config --global user.name "Arjan Einbu"
+      - run: npm version ${tag}
+      - run: npm publish --access public
+        env:
+          NODE_AUTH_TOKEN: ${{secrets.npm_token}}
+
+  publish-gpr:
+    env:
+      tag: ${{ github.event.release.tag_name }}
+    needs: build
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v1
+        with:
+          node-version: 12
+          registry-url: https://npm.pkg.github.com/
+          scope: '@aeinbu'
+      - run: npm ci
+      - run: git config --global user.email "[email protected]"
+      - run: git config --global user.name "Arjan Einbu"
+      - run: npm version ${tag}
+      - run: npm publish --access public
+        env:
+          NODE_AUTH_TOKEN: ${{secrets.GITHUB_TOKEN}}

package.json

@@ -16,7 +16,7 @@
     "build": "tsc",
     "prepare": "npm run build",
     "prepublishOnly": "npm test",
-    "postversion": "git push --tags",
+    "version" : "git add package.json",
     "lint-autofix": "eslint --fix src/**/* tests/**/*"
   },
   "repository": {