nl_tokens: Run once and lastest one
pl_tokens: function ( fn ) { var pending var hasNext function <mask> ( ) { setTimeout ( function ( ) { if ( pending === false ) return pending = false if ( hasNext ) { hasNext = false fn ( next ) } } , 50 ) // call after gulp ending handler done } return function ( ) { if ( pending ) return ( hasNext = true ) pending = true fn ( next ) } }