chore: remove dead isBunRuntime() export

src/lib/init/ui/factory.ts

@@ -52,18 +52,6 @@ export type UIFactoryOptions = {
   forceLegacy?: boolean;
 };
 
-/**
- * Detect whether the CLI is running inside the Bun-compiled binary
- * vs. the npm/Node distribution. The `Bun` global only exists in
- * the Bun runtime.
- */
-export function isBunRuntime(): boolean {
-  return (
-    typeof globalThis.Bun !== "undefined" &&
-    typeof process.versions.bun === "string"
-  );
-}
-
 /**
  * Detect whether the current process can run an interactive prompt.
  * Both stdin (read keystrokes) and stdout (render the prompt) must be

test/lib/init/ui/factory.test.ts

@@ -12,13 +12,10 @@
  *     bundle into our CJS npm distribution).
  *
  * We patch the env and `process.stdin.isTTY` / `process.stdout.isTTY`
- * around each test so the assertions are deterministic. The
- * Bun-runtime branch is exercised by leaving `isBunRuntime()` to its
- * real return value — the test runner is invoked via `bun test` so
- * the Bun global is present and `getUIAsync` can attempt the Ink
- * path. To keep tests fast and TTY-independent we use the
- * `forceLegacy` / non-TTY / `--yes` paths to assert `LoggingUI` is
- * returned without ever spinning up a real renderer.
+ * around each test so the assertions are deterministic. To keep tests
+ * fast and TTY-independent we use the `forceLegacy` / non-TTY / `--yes`
+ * paths to assert `LoggingUI` is returned without ever spinning up a
+ * real renderer.
  */
 
 import { afterEach, beforeEach, describe, expect, test } from "bun:test";