nl_tokens: Yield only the items in an iterable sequence that match the predicate
pl_tokens: function filter ( predicate ) { return function ( iterable ) { return __asyncGenerator ( this , arguments , function * ( ) { var e_5 , _a ; let index = 0 ; try { for ( var iterable_3 = __asyncValues ( iterable ) , iterable_3_1 ; iterable_3_1 = yield __await ( iterable_3 . next ( ) ) , ! iterable_3_1 . done ; ) { const value = iterable_3_1 . value ; if ( yield __await ( predicate ( <mask> , index ) ) ) { yield yield __await ( value ) ; } index = index + 1 ; } } catch ( e_5_1 ) { e_5 = { error : e_5_1 } ; } finally { try { if ( iterable_3_1 && ! iterable_3_1 . done && ( _a = iterable_3 . return ) ) yield __await ( _a . call ( iterable_3 ) ) ; } finally { if ( e_5 ) throw e_5 . error ; } } } ) ; } ; }