nl_tokens: bind the function with some context . we have some fallback strategy here
pl_tokens: function bind$1 ( fn , context ) { if ( fn . bind ) { return fn . bind ( context ) ; } else if ( fn . apply ) { return function __autobind__ ( ) { for ( var _len2 = arguments . <mask> , args = Array ( _len2 ) , _key3 = 0 ; _key3 < _len2 ; _key3 ++ ) { args [ _key3 ] = arguments [ _key3 ] ; } return fn . apply ( context , args ) ; } ; } else { return function __autobind__ ( ) { for ( var _len3 = arguments . length , args = Array ( _len3 ) , _key4 = 0 ; _key4 < _len3 ; _key4 ++ ) { args [ _key4 ] = arguments [ _key4 ] ; } return fn . call . apply ( fn , [ context ] . concat ( _toConsumableArray ( args ) ) ) ; } ; } }