test: add a sanity test for exports

Author: JackuB

.github/workflows/test.yaml

@@ -0,0 +1,15 @@
+name: Test
+
+on: push
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Use Node.js 14
+        uses: actions/setup-node@v2
+        with:
+          node-version: 14
+      - run: npm install
+      - run: npm test

.gitignore

@@ -1,2 +1,3 @@
 source
 *.tgz
+node_modules