[3.0.1] Node.js debugger always stops in fs.js on app startup, even though no breakpoints exist

Love the built-in Node.js debugging feature! Thanks guys!

That said, everytime I start my app the debugger repeatedly stop inside Node's built-in filesystem module code (fs.js) even though I do not have any breakpoints. For example, here are the first few lines of the file I'm running:

var path = require('path'),
    express = require('express'),
    …

The call to require('express') causes Node to eventually load a 3rd-party library from the filesystem, so the execution ends up in fs.js. This is where the debugger hits some sort of "invisible breakpoint", on fs.js:413.

If I keep clicking "Resume" the debugger advances but inevitably hits another "invisible breakpoint" in fs.js, sometimes at different lines.

The work-around I'm using is to mute all breakpoints until my app has finished launching, then un-mute. But this does seem like it might be a WebStorm-related bug. For comparison, I don't have this issue with the 'node-inspector' tool that can also be used for debugging, hence my suspisions that it's specific to WebStorm.

Any ideas? Thanks!

OSX 10.6.8
WebStorm 3.0.1
Node 0.6.8

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7 comments

Actually this is "Exception breakpoint" being triggered and you can switch off in Debug panel settings

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I have the same problem.

After turning off "all exceptions", although the node.js Express app run well, Webstorm never stops on any breakpoints I set for the app.

I am running:
     Webstorm: 3.0.2
     Node.js: 0.6.10
     Express: 2.5.8


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Breakpoints do not work in your own code or in Express source code?
Do you have symlinks in your project?

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Yes, I have setup symlinks to point to both souce code and binary correctly.

To prove this, I can set breakpoints and step into the node.js codes if no other modules are required.

When I start using other modules, ex: require('express') or others, setting breakpoints while debugging will not work.  


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please make schema for your symlinking structure, it looks like we have problems with that

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Node JS Location: /home/myname/.nvm/src/node-v0.6.10
Path to Node: /home/myname/.nvm/src/node-v0.6.10/node
Path to Node JS App File: /home/myname/test/test0/test.js
Working Directory: (left empty)

I uses NVM to install node.js and have various versions fo node installed.
However, with the above settings, I can debug and step into codes if no 3rd modules are 'required'.
If I use var express = require('express');, the debugger will not stop on any express functions.


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Thank you, and where express is installed ?

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