JSFiddle - React, Tailwind, and code Playground

JavaScript

try {
    this.config = JSON.parse("}}junkJSON}");
    //...etc
}
catch (e) {
    //console.log(e.message);//the original error message 
    e.message = "Your config file is not well formatted.";//replace with new custom message
    console.error(e);//raise the exception in the console
    //or throw it without catching
    throw e;
}