gulpfile.js
function fixMissing (obj, defaults) {
  Object.keys(defaults).forEach(function (key) {
    obj[key] = obj[key] || defaults[key];
  });
}
function fixMissing (obj, defaults) {
  Object.keys(defaults).forEach(function (key) {
    obj[key] = obj[key] || defaults[key];
  });
}
function fixMissing ( obj , defaults ) { Object . keys ( defaults ) . forEach ( function ( key ) { obj [ key ] = obj [ key ] || defaults [ key ] ; } ) ; }
Fix missing values
Fix missing values