code: function omit(originalObject, keys = []) {
    // code based on babel's _objectWithoutProperties
    const newObject = {};
    for (const key in originalObject) {
      if (keys.indexOf(key) >= 0) {
        continue;
      }
      if (!Object.prototype.hasOwnProperty.call(originalObject, key)) {
        continue;
      }
      newObject[key] = originalObject[key];
    }
    return newObject;
  }
docs: Exported Functions 
  creates an object with some keys excluded
  replacement for lodash.omit for performance. does not mimick the entire lodash.omit api
  @param {Object} originalObject: created object will be based on this object
  @param {Array<String>} keys: an array of keys to omit from the new object
  @returns {Object} new object with same properties as originalObject