JS bytecode executable "" [ 0] 0: GetLexicalEnvironment dst:reg4 [ 8] GetGlobal dst:reg6, identifier:console [ 18] GetById dst:reg7, base:reg6, property:log, base_identifier:console [ 30] GetGlobal dst:reg9, identifier:add [ 40] Call dst:reg8, callee:reg9, this_value:Undefined, add, arguments:[Int32(1), Int32(2)] [ 68] Call dst:reg5, callee:reg7, this_value:reg6, console.log, arguments:[reg8] [ 90] End value:reg5 JS bytecode executable "add" [ 0] 0: GetLexicalEnvironment dst:reg4 [ 8] Add dst:reg5, lhs:arg0, rhs:arg1 [ 18] Return value:reg5 3