saepequia/src/babel/utils/isBoxedPrimitive.ts

A simple, maximally extensible, dependency minimized framework for building modern Ethereum dApps

// There is a problem with using boxed numbers and strings in TS,
// so we cannot just use `instanceof` here

const constructors = ['Number', 'String'];
export default function isBoxedPrimitive(o: any): o is Number | String {
  return (
    constructors.includes(o.constructor.name) &&
    typeof o?.valueOf() !== 'object'
  );
}