msg ( "test top level code" ) ; let xsum = 0 ; let forclean = ( ) => { } ; for ( let i = 0 ; i < 11 ; ++ i ) { xsum = xsum + i ; forclean = ( ) => { i = 0 ; } ; } forclean ( ) ; forclean = null ; assert ( xsum == 55 , "mainfor" ) ; control . runInBackground ( ( ) => { xsum = xsum + 10 ; } ) ; pause ( 20 ) ; assert ( xsum == 65 , "mainforBg" ) ; xsum = 0 ; assert ( xyz == 12 , "init" ) ; function incrXyz ( ) { xyz ++ ; return 0 ; } let unusedInit = incrXyz ( ) ; assert ( xyz == 13 , "init2" ) ; xyz = 0 ; for ( let e of [ "" ] ) { } s2 = "" ; for ( let i = 0 ; i < 3 ; i ++ ) { let copy = i ; control . runInBackground ( ( ) => { pause ( 10 * copy + 1 ) ; s2 = s2 + copy ; } ) ; } pause ( 200 ) ; assert ( s2 == "012" ) ;