switch to microbundle

.github/workflows/ci.yml

@@ -3,17 +3,17 @@ name: CI
 on:
   push:
     branches:
-    - main
+      - main
   pull_request:
 
 jobs:
   lint:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
-    - uses: actions/setup-node@v2
-      with:
-        node-version: '14.x'
-    - run: yarn install --frozen-lockfile
-    - run: yarn lint
-    - run: yarn build
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v2
+        with:
+          node-version: 16.x
+      - run: yarn install --frozen-lockfile
+      - run: yarn lint
+      - run: yarn build