Error handling bugfix: pass #1

dist/functions/write-error-file.js

@@ -1,21 +1,42 @@
 import path from "path";
-import { mkdirSync, writeFileSync } from "fs";
+import { existsSync, mkdirSync, writeFileSync } from "fs";
 import grabDirNames from "../utils/grab-dir-names";
 const { BUNX_BUNDLER_ERROR_EXIT_FILE } = grabDirNames();
-export default function writeErrorFile({ exitCode, error, }) {
+/**
+ * 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, }) {
+    const has_error = error != null;
+    const abnormal_exit = exitCode != null && exitCode !== 0;
+    if (!has_error && !abnormal_exit)
+        return;
+    if (!force && existsSync(BUNX_BUNDLER_ERROR_EXIT_FILE))
+        return;
+    const err = error instanceof Error
+        ? error
+        : typeof error === "string"
+            ? new Error(error)
+            : undefined;
+    const message = err?.message || "Unknown error";
+    const stack = err?.stack || "N/A";
     let txt = ``;
     txt += `Bunext Error\n`;
     txt += `============================================\n`;
-    txt += `ERROR: ${error?.message}\n`;
-    txt += `EXIT_CODE: ${exitCode || 0}\n`;
-    txt += `CALL_STACK: ${error?.stack}\n`;
-    mkdirSync(path.dirname(BUNX_BUNDLER_ERROR_EXIT_FILE), { recursive: true });
-    writeFileSync(BUNX_BUNDLER_ERROR_EXIT_FILE, txt);
+    txt += `ERROR: ${message}\n`;
+    txt += `EXIT_CODE: ${exitCode ?? "N/A"}\n`;
+    txt += `CALL_STACK:\n${stack}\n`;
+    try {
+        mkdirSync(path.dirname(BUNX_BUNDLER_ERROR_EXIT_FILE), {
+            recursive: true,
+        });
+        writeFileSync(BUNX_BUNDLER_ERROR_EXIT_FILE, txt);
+    }
+    catch { }
 }
-// log.info("Running development server ...");
-// try {
-//     rmSync(HYDRATION_DST_DIR, { recursive: true });
-//     rmSync(BUNX_CWD_PAGES_REWRITE_DIR, { recursive: true });
-// } catch (error) {}
-// await bunextInit();
-// await startServer();