Add GitHub Actions CI workflow

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: yangshun

.github/workflows/ci.yml

@@ -0,0 +1,24 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  check:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: pnpm/action-setup@v4
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 22
+          cache: pnpm
+
+      - run: pnpm install --frozen-lockfile
+
+      - run: pnpm check

package.json

@@ -56,6 +56,7 @@
     "oxfmt": "^0.36.0",
     "oxlint": "^1.51.0",
     "tsdown": "^0.21.0",
+    "tsx": "^4.21.0",
     "typescript": "^5.9.3",
     "vitest": "^4.0.18"
   },

pnpm-lock.yaml

@@ -2,14 +2,15 @@ import { execFile } from 'child_process';
 import path from 'path';
 import { describe, expect, test } from 'vitest';
 
-const CLI_PATH = path.resolve(__dirname, '../../dist/cli.cjs');
+const TSX_PATH = path.resolve(__dirname, '../../node_modules/.bin/tsx');
+const CLI_PATH = path.resolve(__dirname, '../cli.ts');
 const FIXTURES_PATH = path.join(__dirname, '__fixtures__');
 
 function run(
   args: string[] = [],
 ): Promise<{ stdout: string; stderr: string; exitCode: number }> {
   return new Promise((resolve) => {
-    execFile('node', [CLI_PATH, ...args], (error, stdout, stderr) => {
+    execFile(TSX_PATH, [CLI_PATH, ...args], (error, stdout, stderr) => {
       resolve({
         stdout: stdout.trimEnd(),
         stderr: stderr.trimEnd(),