ci: add lint, build and test checks (#1)

.github/ci.yml

@@ -0,0 +1,29 @@
+name: CI
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+
+jobs:
+  lint-build-test:
+    name: Lint, build and test
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Node
+        uses: actions/setup-node@v4
+
+      - run: |
+          npm ci
+
+      - run: |
+          npm lint
+
+      - run: |
+          npm build
+
+      - run: |
+          npm test

.gitignore

@@ -1,3 +1,4 @@
 /dist
+/coverage
 node_modules
 

eslint.config.js

@@ -0,0 +1,9 @@
+// @ts-check
+
+import eslint from "@eslint/js";
+import tseslint from "typescript-eslint";
+
+export default tseslint.config(
+  eslint.configs.recommended,
+  ...tseslint.configs.recommended,
+);