Error handling bugfix: pass #1

dist/functions/write-error-file.d.ts

@@ -1,4 +1,22 @@
-export default function writeErrorFile({ exitCode, error, }: {
-    error?: Bun.ErrorLike;
-    exitCode: number | null;
-}): void;
+type Params = {
+    /**
+     * Only include when the exiting process actually crashed with an error.
+     * Bun's spawn `onExit` `error` is only set on spawn failures, so callers
+     * that DO have the error (crash handlers) should pass `force: true`.
+     */
+    force?: boolean;
+    error?: unknown;
+    exitCode?: number | null;
+};
+/**
+ * Writes the `BUNDLER_EXIT.txt` flag that the bundler pipeline watches to
+ * detect that the dev/prod child process previously crashed.
+ *
+ * Guardrails:
+ * - Never writes for clean exits (exitCode === 0) or signal deaths where no
+ *   error is available (Ctrl+C must not leave a stale error file behind).
+ * - The supervisor writes only when the file does not already exist, so the
+ *   crash handler's richer error/stack payload is not clobbered.
+ */
+export default function writeErrorFile({ force, error, exitCode, }: Params): void;
+export {};