return reg ex in json responce

[vorticalbox]

I have route that returns how a item should look, in which there is a field that contains regex. when I return that item be it as an object or JSON.stringify I just returns {} rather than the rex

 

here is an exmaple

 

https://repl.it/repls/FrigidSinfulZettabyte

 

basically how do I fix this? I am using NodeJS

[vorticalbox]

RegExp.prototype.toJSON = RegExp.prototype.toString;

const myObj  = {
  reg: /(^|\s)[a-z]/g
}

console.log(JSON.stringify(myObj))