class Prism::Translation::Parser::Compiler

def visit_global_variable_operator_write_node(node)

^^^^^^^^^^^
$foo += bar 
def visit_global_variable_operator_write_node(node)
  builder.op_assign(
    builder.assignable(builder.gvar(token(node.name_loc))),
    [node.operator_loc.slice.chomp("="), srange(node.operator_loc)],
    visit(node.value)
  )
end