function eqOp ( ) { msg ( "eqOp" ) ; let x = 12 ; assert ( ( x += 10 ) == 22 , "Y0" ) ; assert ( x == 22 , "Y1" ) ; x /= 2 ; assert ( x == 11 , "Y2" ) ; let s = ( "fo" + 1 ) ; let t = ( "ba" + 2 ) ; s += t ; assert ( s == "fo1b" + "a2" , "fb" ) ; } function eqOpString ( ) { msg ( "eqOpStr" ) ; let x = "fo" ; assert ( ( x += "ba" ) == "foba" , "SY0" ) ; assert ( x == "foba" , "SY1" ) ; } eqOp ( ) ; eqOpString ( ) ; function eq < A , B > ( a , b ) { return a == b as any as A ; } function eqG ( ) { assert ( eq ( "2" , 2 ) , "2" ) ; assert ( eq ( 2 , "2" ) , "2'" ) ; assert ( ! eq ( "null" , null ) , "=1" ) ; assert ( ! eq ( null , "null" ) , "=2" ) ; assert ( ! eq ( "2" , 3 ) , "=3" ) ; } eqG ( ) ;