How to log a Node.js object with circular references to the console

Published on January 17, 2021

If you try to use JSON.stringify() on a NodeJS object you will get an error “Converting circular structure to JSON”. This is because NodeJS objects have circular references.

The way to stringify NodeJS objects is to use util.inspect().

util.inspect()

There is excellent documentation on the NodeJS site here.

But you can use it simply by just passing the object to the method without options.

util.inspect({ a: 1, b: 'b' })
Darragh ORiordan

Hi! I'm Darragh ORiordan.

I live and work in Sydney, Australia enjoying the mountains and the ocean.

I build and support happy teams that create high quality software for the web.

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