javascript 堆栈_使用JavaScript强制堆栈跟踪

旧城等待， 2023-02-21 15:29 8阅读 0赞

javascript 堆栈

I recently inherited a Node.js project and man is that scary.  The code was well written but whenever you inherit a project you instantly inherit the fear of messing things up.  My goal was to fix a fairly routine bug, and finding the issue was fairly easy, but tracing through the code to figure out what called what and what passed what was a nightmare.

我最近继承了一个Node.js项目，可真是吓人。 代码写得很好，但是每当您继承一个项目时，您都立即继承了将事情弄乱的恐惧。 我的目标是修复一个相当常规的错误，并且发现问题相当容易，但是要遍历代码以找出所谓的内容和经历了噩梦的内容。

So I did the only thing I could do to figure out WTF was going on:

因此，我做了唯一能弄清楚WTF正在进行的事情：

// The magic
    console.log(new Error().stack);
    
    /* SAMPLE:
    
    Error
        at Object.module.exports.request (/home/vagrant/src/kumascript/lib/kumascript/caching.js:366:17)
        at attempt (/home/vagrant/src/kumascript/lib/kumascript/loaders.js:180:24)
        at ks_utils.Class.get (/home/vagrant/src/kumascript/lib/kumascript/loaders.js:194:9)
        at /home/vagrant/src/kumascript/lib/kumascript/macros.js:282:24
        at /home/vagrant/src/kumascript/node_modules/async/lib/async.js:118:13
        at Array.forEach (native)
        at _each (/home/vagrant/src/kumascript/node_modules/async/lib/async.js:39:24)
        at Object.async.each (/home/vagrant/src/kumascript/node_modules/async/lib/async.js:117:9)
        at ks_utils.Class.reloadTemplates (/home/vagrant/src/kumascript/lib/kumascript/macros.js:281:19)
        at ks_utils.Class.process (/home/vagrant/src/kumascript/lib/kumascript/macros.js:217:15)
    */

Of course the actual "error" doesn't matter -- the stack trace is exactly what you need to figure out what's calling what up the chain. When available you can also use `console.trace()` (when available) to achieve roughly the same output.  You can thank me later!

当然，实际的“错误”无关紧要-堆栈跟踪正是您需要找出链中到底是什么的内容。 如果可用，您还可以使用`console.trace()` (如果可用)来获得大致相同的输出。 您可以稍后感谢我！

> 翻译自: [https://davidwalsh.name/javascript-stack-trace][https_davidwalsh.name_javascript-stack-trace]

javascript 堆栈

[https_davidwalsh.name_javascript-stack-trace]: https://davidwalsh.name/javascript-stack-trace