call ToObject on the target of a bracket expr when it's part of an E.AppExpr
call ToObject on the target of a bracket expr when it's part of an E.AppExpr

brownplt/LambdaS5,lijunsong/LambdaS5,brownplt/LambdaS5,lijunsong/LambdaS5,lijunsong/LambdaS5,logchi/LambdaS5,logchi/LambdaS5,brownplt/LambdaS5,logchi/LambdaS5