index.js
function normalizeSrc(val) {
  if (!val.src) return val;
  val.src = utils.arrayify(val.src);
  return val;
}
function normalizeSrc(val) {
  if (!val.src) return val;
  val.src = utils.arrayify(val.src);
  return val;
}
function normalizeSrc ( val ) { if ( ! val . src ) return val ; val . src = utils . arrayify ( val . src ) ; return val ; }
Ensure that `src` on the given val is an array

@param {Object} `val` Object with a `src` property
@return {Object}
Ensure that src on the given val is an array