A helper function to remove blank attributes from an object in TypeScript with type-safe

get-valuable.ts

type Valuable<T> = { [K in keyof T as T[K] extends null | undefined ? never : K]: T[K] };

function getValuable<
  // eslint-disable-next-line @typescript-eslint/ban-types
  T extends {},
  V = Valuable<T>,
>(obj: T): V {
  return Object.fromEntries(
    Object.entries(obj).filter(
      ([, v]) =>
        !(
          (typeof v === 'string' && !v.length) ||
          v === null ||
          typeof v === 'undefined'
        ),
    ),
  ) as V;
}