How to debug core library of node in WebStorm?

Question

In WebStorm I could go into _stream_readable.js belonging to Node core library by using Force Step Into button. But I couldn't add any breakpoints there.

Meanwhile I can do this in Chrome Devtools where there is a limitation you need http server to connect Chrome Dev with Node Application. It is not convenient sometimes.

Is there any way to debug core code in WebStorm?

lena · Accepted Answer · 2017-10-28 18:41:31Z

2

Chrome Dev Tools deal with runtime code loaded in VM, WebStorm - with source files available on your disk. You can't create breakpoints in files that don't exist in your project/libraries. But you can step into runtime code while debugging.

Node.js Core library created by Webstorm for Node.js code completion (Settings | Languages & Frameworks | Node.js and NPM, Node.js Core) includes fs.js, stream.js, etc. - all core modules provided by builtin-modules module, so some of the core files are available locally and included in project and thus accessible to the IDE. But undocumented and similar modules, like _stream_readable are not included.

answered Oct 28, 2017 at 18:41

lena

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