Node.JS: Can't figure out what's causing a memory leak (heap space)

Question

After a few hours of running my node.js server, I get a "javascript heap space out of memory" error. I could increase it but the memory keeps going up so I don't think increasing the heap size will solve this.

I'm trying to use the chrome dev tools to figure out:

• What file this is occurring on
• What object/variable this is occurring on

But the chrome dev tools are so hard to read. I believe there's a memory leak somewhere in my program because the amount of memory keeps going up over time.

Is there a way to figure out what lines of code are possibly causing a memory leak or what objects are getting filled up with memory using the chrome dev tools?

When I take a heap snapshot using chrome dev tools, I look at the objects with the most memory but I can't figure out what objects these are in my code, there's no names of the variables or anything.