nl_tokens: Yields the passed iterables at the end of the current iterable
pl_tokens: function concat ( ... iterables ) { return function ( it ) { return __asyncGenerator ( this , arguments , function * ( ) { var e_20 , _a ; yield __await ( yield * __asyncDelegator ( __asyncValues ( it ) ) ) ; try { for ( var iterables_1 = __asyncValues ( iterables ) , iterables_1_1 ; iterables_1_1 = yield __await ( iterables_1 . next ( ) ) , ! iterables_1_1 . done ; ) { const iterable = iterables_1_1 . value ; yield __await ( yield * __asyncDelegator ( __asyncValues ( iterable ) ) ) ; } } catch ( e_20_1 ) { e_20 = { error : e_20_1 } ; } finally { try { if ( iterables_1_1 && ! iterables_1_1 . <mask> && ( _a = iterables_1 . return ) ) yield __await ( _a . call ( iterables_1 ) ) ; } finally { if ( e_20 ) throw e_20 . error ; } } } ) ; } ; }