Typically, the name of a compiler comes from the language it compiles into something else.
asc = ActionScript compiler mxmlc = MXML Compiler tsc = TypeScript Compiler csc = C Sharp Compiler jsc doesn't follow that convention. Instead, it's named after its output format, with no mention of its input language. With this name, many developers might expect it to compile JavaScript into something else. Should it be renamed? - Josh