如何读取node.js回溯？

这里是Node.js新手。当我的应用程序崩溃时，我会得到以下堆栈跟踪：

/private/var/folders/ds/jt45ngkn40x012pyb8mtc0j00000gn/T/shelljs_9498e871f54d195af8d1:10
    fs.writeFileSync(fname, err.code.toString());
                                    ^

TypeError: Cannot read property 'toString' of null
    at /private/var/folders/ds/jt45ngkn40x012pyb8mtc0j00000gn/T/shelljs_9498e871f54d195af8d1:10:37
    at ChildProcess.exithandler (child_process.js:259:5)
    at emitTwo (events.js:125:13)
    at ChildProcess.emit (events.js:213:7)
    at maybeClose (internal/child_process.js:887:16)
    at Socket.stream.socket.on (internal/child_process.js:340:11)
    at emitOne (events.js:115:13)
    at Socket.emit (events.js:210:7)
    at Pipe._handle.close [as _onclose] (net.js:546:12)
exec: internal error

---

我怎样才能从这里得到一行代码

events.js是您的代码吗？这是一个开源项目-我有一个名为events.js的文件，但在第125行有一条注释。