ci: run on GitHub Actions

Author: susisu

.github/workflows/ci.yml

@@ -0,0 +1,27 @@
+name: CI
+on:
+  push:
+  pull_request:
+  release:
+    types:
+    - created
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node-version:
+        - 10.x
+        - 12.x
+        - 14.x
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v2
+    - name: Set up Node.js ${{ matrix.node-version }}
+      uses: actions/setup-node@v1
+      with:
+        node-version: ${{ matrix.node-version }}
+    - run: yarn install --frozen-lockfile
+    - run: yarn lint
+    - run: yarn test
+    - run: yarn build

.travis.yml

@@ -18,8 +18,7 @@
     "test": "jest",
     "build": "rollup -c",
     "clean": "rimraf dist",
-    "prepublishOnly": "run-s clean lint test build",
-    "ci": "run-s lint test build"
+    "prepublishOnly": "run-s clean lint test build"
   },
   "devDependencies": {
     "@susisu/eslint-config": "^0.0.28",