class RuboCop::Cop::Naming::VariableName

fooBar = 1
# good
foo_bar = 1
# bad
@example EnforcedStyle: camelCase
foo_bar = 1
# good
fooBar = 1
# bad
@example EnforcedStyle: snake_case (default)
snake_case or camelCase, for their names.
This cop makes sure that all variables use the configured style,

def message(style) 

def message(style)
  format(MSG, style: style)
end

def on_lvasgn(node) 

def on_lvasgn(node)
  name, = *node
  return unless name
  return if allowed_identifier?(name)
  check_name(node, name, node.loc.name)
end