shkm/frecli

This cop checks that include, extend and prepend exists at the top level. Using these at the top level affects the behavior of Object. There will not be using include, extend and prepend at the top level. Let's use it inside class or module.

Example:

# bad
include M

class C
end

# bad
extend M

class C
end

# bad
prepend M

class C
end

# good
class C
  include M
end

# good
class C
  extend M
end

# good
class C
  prepend M
end

Checks for comma (,) not followed by some kind of space.

Example:

# bad
[1,2]
{ foo:bar,}

# good
[1, 2]
{ foo:bar, }

Checks for comma (,) not followed by some kind of space.

Example:

# bad
[1,2]
{ foo:bar,}

# good
[1, 2]
{ foo:bar, }

This cop checks for the use of JSON class methods which have potential security issues.

Autocorrect is disabled by default because it's potentially dangerous. If using a stream, like JSON.load(open('file')), it will need to call #read manually, like JSON.parse(open('file').read). If reading single values (rather than proper JSON objects), like JSON.load('false'), it will need to pass the quirks_mode: true option, like JSON.parse('false', quirks_mode: true). Other similar issues may apply.

Example:

# always offense
JSON.load("{}")
JSON.restore("{}")

# no offense
JSON.parse("{}")

This cop checks for unused block arguments.

Example:

# bad

do_something do |used, unused|
  puts used
end

do_something do |bar|
  puts :foo
end

define_method(:foo) do |bar|
  puts :baz
end

Example:

#good

do_something do |used, _unused|
  puts used
end

do_something do
  puts :foo
end

define_method(:foo) do |_bar|
  puts :baz
end