pickBy Generic Filtering Util

pickBy.ts

export function pickBy<T>(object: T, predicate: (arg: unknown) => boolean) {
  const obj: T = {} as T;
  for (const key in object) {
    if (predicate(object[key])) {
      obj[key] = object[key];
    }
  }
  return obj;
}

// EXAMPLE:  
// Pick all entries in an object where the value is a string that is not empty
// Uses TS generics to properly type the data object
const sanitizedData = pickBy<FormSchemaType>(
  data,
  (value) => typeof value === "string" && value.length > 0
);