SyntaxError: Unexpected token '??='

[restive pulsar]

i know that error means i should update my nodejs version, but if there's any way to build without syntax like that?

[neat nacelle]

could also just do

let thing: undefined;
if(typeof thing === "undefined"){
  thing = "This is undefined";
}

or if you don't want to check for undefined specifically

let thing: undefined | null;
if(!thing){
  thing = "This is falsy";
}

also did you update your bun types?