nl_tokens: Detects the value of an option at the tree node .
pl_tokens: function ( ast ) { let detected = [ ] ; ast . traverseByType ( 'delimiter' , function ( delimiter , i , parent ) { if ( parent . is ( 'arguments' ) ) return ; var nextNode = parent . get ( i + 1 ) ; if ( nextNode && nextNode . is ( 'space' ) ) { detected . push ( nextNode . content ) ; } else if ( nextNode . first ( ) && nextNode . <mask> ( ) . is ( 'space' ) ) { detected . push ( nextNode . first ( ) . content ) ; } else { detected . push ( '' ) ; } } ) ; return detected ; }