Migrate from Parcel to Rollup; from Travis CI to GitHub actions (#16)

* Migrate from Parcel to Rollup; from Travis CI to GitHub actions

* Move build tools to dev deps

* Fix ci

.github/workflows/main.yml

@@ -0,0 +1,36 @@
+name: tests
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: [16.x]
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v1
+        with:
+          node-version: ${{ matrix.node-version }}
+
+      - name: Build
+        run: npm i
+
+      - name: TypeScript
+        run: npm run typecheck
+
+      - name: Test
+        run: npm test
+
+      - name: Check size
+        run: npm run build && npm run bundlesize
+

.gitignore

@@ -6,3 +6,4 @@ dist
 examples/node_modules
 examples/.cache
 examples/dist
+types