Remove null properties from javascript objects

removeNullProperties.js

"use strict";

export default function removeNullProperties(obj) {
  Object.keys(obj).forEach(key => {
    let value = obj[key];
    let hasProperties = value && Object.keys(value).length > 0;
    if (value === null) {
      delete obj[key];
    }
    else if ((typeof value !== "string") && hasProperties) {
      removeNullProperties(value);
    }
  });
  return obj;
}