chore: add github actions

.github/workflows/nodejs.yml

@@ -0,0 +1,23 @@
+name: Node CI
+
+on: [push]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: [12.x, 14.x]
+
+    steps:
+    - uses: actions/checkout@v1
+    - name: Use Node.js ${{ matrix.node-version }}
+      uses: actions/setup-node@v1
+      with:
+        node-version: ${{ matrix.node-version }}
+    - name: yarn install and test
+      run: |
+        yarn
+        yarn test

.github/workflows/release.yml

@@ -0,0 +1,20 @@
+name: "Release package"
+on: 
+  push:
+    branches:
+      - master
+
+jobs:
+  release_package:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v1
+
+      - name: "npm ci"
+        run: npm ci
+
+      - name: "npm run semantic-release"
+        run: npm run semantic-release
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          NPM_TOKEN: ${{ secrets.NPM_TOKEN }}

package.json

@@ -21,7 +21,8 @@
     "create:changelog": "conventional-changelog -p angular -i CHANGELOG.md -s -r 0 && git add CHANGELOG.md && git commit -m 'docs: update changelog'",
     "create:ogp": "npm run create:ogp:dark && npm run create:ogp:light",
     "create:ogp:dark": "npx @kamataryo/gh-ogp dark > ogp_dark.png",
-    "create:ogp:light": "npx @kamataryo/gh-ogp light > ogp_light.png"
+    "create:ogp:light": "npx @kamataryo/gh-ogp light > ogp_light.png",
+    "semantic-release": "semantic-release"
   },
   "keywords": [],
   "bugs": {
@@ -80,6 +81,7 @@
     "lint-staged": "^9.2.5",
     "rollup": "^1.20.3",
     "rollup-plugin-typescript2": "^0.24.0",
+    "semantic-release": "^17.0.8",
     "ts-jest": "^24.0.2",
     "tslib": "^1.10.0",
     "typedoc": "^0.15.0",