ci: add typechecking, fail fast in CI, and patch typechecking errors (#63)

scripts/check.js

@@ -0,0 +1,43 @@
+#!/usr/bin/env bun
+// Script to run linting and type checking with helpful error messages
+
+import { $ } from "bun";
+
+console.log("🔍 Running lint and type checks...\n");
+
+let failed = false;
+
+// Run lint
+console.log("📝 Running Biome linter...");
+try {
+  await $`bun run lint`;
+  console.log("✅ Linting passed\n");
+} catch (error) {
+  console.error("❌ Linting failed\n");
+  console.error("To fix automatically, run:");
+  console.error("  bun run fix\n");
+  failed = true;
+}
+
+// Run typecheck
+console.log("🔎 Running TypeScript type checker...");
+try {
+  await $`bun run typecheck`;
+  console.log("✅ Type checking passed\n");
+} catch (error) {
+  console.error("❌ Type checking failed\n");
+  console.error("Fix the type errors shown above, then run:");
+  console.error("  bun run typecheck\n");
+  failed = true;
+}
+
+if (failed) {
+  console.error("❌ Checks failed. Please fix the errors above.");
+  console.error("\nQuick commands:");
+  console.error("  bun run fix       # Auto-fix linting issues");
+  console.error("  bun run typecheck # Check types only");
+  console.error("  bun run check     # Run both checks");
+  process.exit(1);
+}
+
+console.log("✅ All checks passed!");