I am using Webstorm IDE and I created a custom function for the prototype Boolean.

Boolean.prototype.toStringTF = (): keyof TF => this ? "true" : "false";
console.log(Boolean(import.meta.env.PROD).toStringTF());
const isProduction: keyof typeof beforeSendObject = Boolean(import.meta.env.PROD).toStringTF();

The function works perfectly, but the IDE dosnt recognize the function on the prototype.

Thanks for the help!