function (bidd, callback) {
  if (!isDefine(bidd.arg)) callback()
  if (bidd.arg === 'on' || bidd.arg === 'once' && objLength(bidd.modifiers) === 0) callback()
}
function (bidd, callback) {
  if (!isDefine(bidd.arg)) callback()
  if (bidd.arg === 'on' || bidd.arg === 'once' && objLength(bidd.modifiers) === 0) callback()
}
function ( bidd , callback ) { if ( ! isDefine ( bidd . arg ) ) callback ( ) if ( bidd . arg === 'on' || bidd . arg === 'once' && objLength ( bidd . modifiers ) === 0 ) callback ( ) }
(bidd → object{arg → string, modifiers → array}, callback → function)
- check and call callback action
( bidd → object { arg → string modifiers → array } callback → function ) - check and call callback action