JavaScript debuggers are broken

Re:JavaScript debuggers are broken by teambayleaf on Monday April 22, 2019 @08:09AM (#19718238)

A debugger is very useful when you trace a piece of code that 1) you understand well and 2) executes relatively linearly. JavaScript is pretty terrible at both.

First of all, most JavaScript apps are just a small chunk of code that sit on frontend frameworks (React etc). This means that using a debugger, you mostly step through framework's internal code base, of which you have a vague understanding at best.

Also, an average JavaScript code hops around -- to put it mildly -- crazily, due to the heavy usage of anonymous functions, callbacks and other very cleaver abstractions.

This is why placing a bunch of console.log beats tracing with a debugger.

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Re:JavaScript debuggers are broken by curioussavage on Monday April 22, 2019 @01:42PM (#19720922)

What? It jumps around because it’s running in an event loop. Not because JS devs try to do too many clever things. You hope it jumps around often or you might be blocking the loop for too long.

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