Function handleWorkerExit

packages/node/src/backend/nodeBackend.ts:591–620

(code: number | null)

  }

  function handleWorkerExit(code: number | null): void {
    if (disposed) return;
    if (stopRequested) {
      if (code !== 0 && fatal === null) {
        fatal = new ZrUiError(
          "ZRUI_BACKEND_ERROR",
          `worker exited unexpectedly: code=${String(code)}`,
        );
        failAll(fatal);
      } else {
        rejectPending(new Error("NodeBackend: stopped"));
      }
    } else if (fatal === null) {
      const message =
        code === 0 && !started && startDef !== null && !startSettled
          ? "worker exited before ready handshake"
          : `worker exited unexpectedly: code=${String(code)}`;
      fatal = new ZrUiError("ZRUI_BACKEND_ERROR", message);
      failAll(fatal);
    }

    if (stopDef !== null && !stopSettled) {
      stopSettled = true;
      stopDef.resolve();
    }

    if (exitDef !== null) exitDef.resolve();
    worker = null;
    started = false;
  }

  const backend: RuntimeBackend = {
    async start(): Promise<void> {