Function traceStartupStep

src/web-ui/src/main.tsx:31–52

(
  phase: string,
  step: string,
  run: () => Promise<T>
)

});

async function traceStartupStep<T>(
  phase: string,
  step: string,
  run: () => Promise<T>
): Promise<T> {
  const startedAt = nowMs();
  startupTrace.markPhase(`${phase}_start`, { step });
  try {
    const value = await run();
    startupTrace.markPhase(`${phase}_end`, {
      step,
      durationMs: elapsedMs(startedAt),
    });
    return value;
  } catch (error) {
    startupTrace.markPhase(`${phase}_failed`, {
      step,
      durationMs: elapsedMs(startedAt),
    });
    throw error;
  }
}

/** Dedupe only for white-screen heuristic (empty #root), not for Error Boundary logs. */
const WHITE_SCREEN_LOGGED_FLAG = '__bitfun_white_screen_crash_logged__';