brew/Library/Homebrew/sorbet/rbi/gems/rspec-support@3.13.4.rbi

# typed: true

# DO NOT EDIT MANUALLY
# This is an autogenerated file for types exported from the `rspec-support` gem.
# Please instead update this file by running `bin/tapioca gem rspec-support`.


# source://rspec-support//lib/rspec/support.rb#3
module RSpec
  extend ::RSpec::Support::Warnings
end

# Consistent implementation for "cleaning" the caller method to strip out
# non-rspec lines. This enables errors to be reported at the call site in
# the code using the library, which is far more useful than the particular
# internal method that raised an error.
#
# source://rspec-support//lib/rspec/support/caller_filter.rb#10
class RSpec::CallerFilter
  class << self
    # Earlier rubies do not support the two argument form of `caller`. This
    # fallback is logically the same, but slower.
    #
    # source://rspec-support//lib/rspec/support/caller_filter.rb#49
    def first_non_rspec_line(skip_frames = T.unsafe(nil), increment = T.unsafe(nil)); end
  end
end

# source://rspec-support//lib/rspec/support/caller_filter.rb#20
RSpec::CallerFilter::ADDITIONAL_TOP_LEVEL_FILES = T.let(T.unsafe(nil), Array)

# rubygems/core_ext/kernel_require.rb isn't actually part of rspec (obviously) but we want
# it ignored when we are looking for the first meaningful line of the backtrace outside
# of RSpec. It can show up in the backtrace as the immediate first caller
# when `CallerFilter.first_non_rspec_line` is called from the top level of a required
# file, but it depends on if rubygems is loaded or not. We don't want to have to deal
# with this complexity in our `RSpec.deprecate` calls, so we ignore it here.
#
# source://rspec-support//lib/rspec/support/caller_filter.rb#30
RSpec::CallerFilter::IGNORE_REGEX = T.let(T.unsafe(nil), Regexp)

# source://rspec-support//lib/rspec/support/caller_filter.rb#22
RSpec::CallerFilter::LIB_REGEX = T.let(T.unsafe(nil), Regexp)

# source://rspec-support//lib/rspec/support/caller_filter.rb#11
RSpec::CallerFilter::RSPEC_LIBS = T.let(T.unsafe(nil), Array)

# source://rspec-support//lib/rspec/support.rb#4
module RSpec::Support
  class << self
    # Used internally to get a class of a given object, even if it does not respond to #class.
    #
    # @api private
    #
    # source://rspec-support//lib/rspec/support.rb#86
    def class_of(object); end

    # Defines a helper method that is optimized to require files from the
    # named lib. The passed block MUST be `{ |f| require_relative f }`
    # because for `require_relative` to work properly from within the named
    # lib the line of code must be IN that lib.
    #
    # `require_relative` is preferred when available because it is always O(1),
    # regardless of the number of dirs in $LOAD_PATH. `require`, on the other
    # hand, does a linear O(N) search over the dirs in the $LOAD_PATH until
    # it can resolve the file relative to one of the dirs.
    #
    # @api private
    #
    # source://rspec-support//lib/rspec/support.rb#16
    def define_optimized_require_for_rspec(lib, &require_relative); end

    # Remove a previously registered matcher. Useful for cleaning up after
    # yourself in specs.
    #
    # @private
    #
    # source://rspec-support//lib/rspec/support/matcher_definition.rb#24
    def deregister_matcher_definition(&block); end

    # @api private
    #
    # source://rspec-support//lib/rspec/support.rb#113
    def failure_notifier; end

    # @api private
    #
    # source://rspec-support//lib/rspec/support.rb#105
    def failure_notifier=(callable); end

    # @private
    # @return [Boolean]
    #
    # source://rspec-support//lib/rspec/support/matcher_definition.rb#29
    def is_a_matcher?(object); end

    # @private
    #
    # source://rspec-support//lib/rspec/support/matcher_definition.rb#6
    def matcher_definitions; end

    # source://rspec-support//lib/rspec/support.rb#54
    def method_handle_for(object, method_name); end

    # @api private
    #
    # source://rspec-support//lib/rspec/support.rb#118
    def notify_failure(failure, options = T.unsafe(nil)); end

    # Used internally to break cyclic dependency between mocks, expectations,
    # and support. We don't currently have a consistent implementation of our
    # matchers, though we are considering changing that:
    # https://github.com/rspec/rspec-mocks/issues/513
    #
    # @private
    #
    # source://rspec-support//lib/rspec/support/matcher_definition.rb#16
    def register_matcher_definition(&block); end

    # source://rspec-support//lib/rspec/support.rb#25
    def require_rspec_support(f); end

    # gives a string representation of an object for use in RSpec descriptions
    #
    # @api private
    #
    # source://rspec-support//lib/rspec/support/matcher_definition.rb#36
    def rspec_description_for_object(object); end

    # source://rspec-support//lib/rspec/support.rb#95
    def thread_local_data; end

    # @api private
    #
    # source://rspec-support//lib/rspec/support.rb#140
    def warning_notifier; end

    # @api private
    #
    # source://rspec-support//lib/rspec/support.rb#133
    def warning_notifier=(_arg0); end

    # @api private
    #
    # source://rspec-support//lib/rspec/support.rb#123
    def with_failure_notifier(callable); end
  end
end

# @private
#
# source://rspec-support//lib/rspec/support.rb#145
module RSpec::Support::AllExceptionsExceptOnesWeMustNotRescue
  class << self
    # source://rspec-support//lib/rspec/support.rb#150
    def ===(exception); end
  end
end

# These exceptions are dangerous to rescue as rescuing them
# would interfere with things we should not interfere with.
#
# source://rspec-support//lib/rspec/support.rb#148
RSpec::Support::AllExceptionsExceptOnesWeMustNotRescue::AVOID_RESCUING = T.let(T.unsafe(nil), Array)

# Deals with the slightly different semantics of block arguments.
# For methods, arguments are required unless a default value is provided.
# For blocks, arguments are optional, even if no default value is provided.
#
# However, we want to treat block args as required since you virtually
# always want to pass a value for each received argument and our
# `and_yield` has treated block args as required for many years.
#
# @api private
#
# source://rspec-support//lib/rspec/support/method_signature_verifier.rb#268
class RSpec::Support::BlockSignature < ::RSpec::Support::MethodSignature
  # @api private
  #
  # source://rspec-support//lib/rspec/support/method_signature_verifier.rb#270
  def classify_parameters; end
end

# @private
#
# source://rspec-support//lib/rspec/support/comparable_version.rb#6
class RSpec::Support::ComparableVersion
  include ::Comparable

  # @return [ComparableVersion] a new instance of ComparableVersion
  #
  # source://rspec-support//lib/rspec/support/comparable_version.rb#11
  def initialize(string); end

  # source://rspec-support//lib/rspec/support/comparable_version.rb#15
  def <=>(other); end

  # source://rspec-support//lib/rspec/support/comparable_version.rb#37
  def segments; end

  # Returns the value of attribute string.
  #
  # source://rspec-support//lib/rspec/support/comparable_version.rb#9
  def string; end
end

# @private
#
# source://rspec-support//lib/rspec/support.rb#110
RSpec::Support::DEFAULT_FAILURE_NOTIFIER = T.let(T.unsafe(nil), Proc)

# @private
#
# source://rspec-support//lib/rspec/support.rb#137
RSpec::Support::DEFAULT_WARNING_NOTIFIER = T.let(T.unsafe(nil), Proc)

# source://rspec-support//lib/rspec/support/differ.rb#12
class RSpec::Support::Differ
  # @return [Differ] a new instance of Differ
  #
  # source://rspec-support//lib/rspec/support/differ.rb#69
  def initialize(opts = T.unsafe(nil)); end

  # @return [Boolean]
  #
  # source://rspec-support//lib/rspec/support/differ.rb#65
  def color?; end

  # source://rspec-support//lib/rspec/support/differ.rb#13
  def diff(actual, expected); end

  # source://rspec-support//lib/rspec/support/differ.rb#59
  def diff_as_object(actual, expected); end

  # source://rspec-support//lib/rspec/support/differ.rb#30
  def diff_as_string(actual, expected); end

  private

  # source://rspec-support//lib/rspec/support/differ.rb#130
  def add_old_hunk_to_hunk(hunk, oldhunk); end

  # source://rspec-support//lib/rspec/support/differ.rb#126
  def add_to_output(output, string); end

  # @return [Boolean]
  #
  # source://rspec-support//lib/rspec/support/differ.rb#80
  def all_strings?(*args); end

  # @return [Boolean]
  #
  # source://rspec-support//lib/rspec/support/differ.rb#84
  def any_multiline_strings?(*args); end

  # source://rspec-support//lib/rspec/support/differ.rb#155
  def blue(text); end

  # source://rspec-support//lib/rspec/support/differ.rb#117
  def build_hunks(actual, expected); end

  # source://rspec-support//lib/rspec/support/differ.rb#92
  def coerce_to_string(string_or_array); end

  # source://rspec-support//lib/rspec/support/differ.rb#143
  def color(text, color_code); end

  # source://rspec-support//lib/rspec/support/differ.rb#163
  def color_diff(diff); end

  # source://rspec-support//lib/rspec/support/differ.rb#97
  def diffably_stringify(array); end

  # source://rspec-support//lib/rspec/support/differ.rb#121
  def finalize_output(output, final_line); end

  # source://rspec-support//lib/rspec/support/differ.rb#139
  def format_type; end

  # source://rspec-support//lib/rspec/support/differ.rb#151
  def green(text); end

  # source://rspec-support//lib/rspec/support/differ.rb#204
  def handle_encoding_errors(actual, expected); end

  # source://rspec-support//lib/rspec/support/differ.rb#194
  def hash_to_string(hash); end

  # @return [Boolean]
  #
  # source://rspec-support//lib/rspec/support/differ.rb#108
  def multiline?(string); end

  # @return [Boolean]
  #
  # source://rspec-support//lib/rspec/support/differ.rb#88
  def no_numbers?(*args); end

  # @return [Boolean]
  #
  # source://rspec-support//lib/rspec/support/differ.rb#76
  def no_procs?(*args); end

  # source://rspec-support//lib/rspec/support/differ.rb#159
  def normal(text); end

  # source://rspec-support//lib/rspec/support/differ.rb#180
  def object_to_string(object); end

  # source://rspec-support//lib/rspec/support/differ.rb#147
  def red(text); end

  # source://rspec-support//lib/rspec/support/differ.rb#134
  def safely_flatten(array); end
end

# Replacement for fileutils#mkdir_p because we don't want to require parts
# of stdlib in RSpec.
#
# @api private
#
# source://rspec-support//lib/rspec/support/directory_maker.rb#11
class RSpec::Support::DirectoryMaker
  class << self
    # Implements nested directory construction
    #
    # @api private
    #
    # source://rspec-support//lib/rspec/support/directory_maker.rb#15
    def mkdir_p(path); end

    private

    # @api private
    # @return [Boolean]
    #
    # source://rspec-support//lib/rspec/support/directory_maker.rb#57
    def directory_exists?(dirname); end

    # @api private
    #
    # source://rspec-support//lib/rspec/support/directory_maker.rb#52
    def generate_path(stack, part); end

    # @api private
    #
    # source://rspec-support//lib/rspec/support/directory_maker.rb#49
    def generate_stack(path); end
  end
end

# @private
#
# source://rspec-support//lib/rspec/support/encoded_string.rb#6
class RSpec::Support::EncodedString
  # @return [EncodedString] a new instance of EncodedString
  #
  # source://rspec-support//lib/rspec/support/encoded_string.rb#16
  def initialize(string, encoding = T.unsafe(nil)); end

  # source://rspec-support//lib/rspec/support/encoded_string.rb#28
  def <<(string); end

  # source://rspec-support//lib/rspec/support/encoded_string.rb#25
  def ==(*args, &block); end

  # source://rspec-support//lib/rspec/support/encoded_string.rb#25
  def empty?(*args, &block); end

  # source://rspec-support//lib/rspec/support/encoded_string.rb#25
  def encoding(*args, &block); end

  # source://rspec-support//lib/rspec/support/encoded_string.rb#25
  def eql?(*args, &block); end

  # source://rspec-support//lib/rspec/support/encoded_string.rb#25
  def lines(*args, &block); end

  # Returns the value of attribute source_encoding.
  #
  # source://rspec-support//lib/rspec/support/encoded_string.rb#21
  def source_encoding; end

  # source://rspec-support//lib/rspec/support/encoded_string.rb#41
  def split(regex_or_string); end

  # source://rspec-support//lib/rspec/support/encoded_string.rb#46
  def to_s; end

  # source://rspec-support//lib/rspec/support/encoded_string.rb#49
  def to_str; end

  private

  # source://rspec-support//lib/rspec/support/encoded_string.rb#139
  def detect_source_encoding(string); end

  # Encoding Exceptions:
  #
  # Raised by Encoding and String methods:
  #   Encoding::UndefinedConversionError:
  #     when a transcoding operation fails
  #     if the String contains characters invalid for the target encoding
  #     e.g. "\x80".encode('UTF-8','ASCII-8BIT')
  #     vs "\x80".encode('UTF-8','ASCII-8BIT', undef: :replace, replace: '<undef>')
  #     # => '<undef>'
  #   Encoding::CompatibilityError
  #     when Encoding.compatible?(str1, str2) is nil
  #     e.g. utf_16le_emoji_string.split("\n")
  #     e.g. valid_unicode_string.encode(utf8_encoding) << ascii_string
  #   Encoding::InvalidByteSequenceError:
  #     when the string being transcoded contains a byte invalid for
  #     either the source or target encoding
  #     e.g. "\x80".encode('UTF-8','US-ASCII')
  #     vs "\x80".encode('UTF-8','US-ASCII', invalid: :replace, replace: '<byte>')
  #     # => '<byte>'
  #   ArgumentError
  #     when operating on a string with invalid bytes
  #     e.g."\x80".split("\n")
  #   TypeError
  #     when a symbol is passed as an encoding
  #     Encoding.find(:"UTF-8")
  #     when calling force_encoding on an object
  #     that doesn't respond to #to_str
  #
  # Raised by transcoding methods:
  #   Encoding::ConverterNotFoundError:
  #     when a named encoding does not correspond with a known converter
  #     e.g. 'abc'.force_encoding('UTF-8').encode('foo')
  #     or a converter path cannot be found
  #     e.g. "\x80".force_encoding('ASCII-8BIT').encode('Emacs-Mule')
  #
  # Raised by byte <-> char conversions
  #   RangeError: out of char range
  #     e.g. the UTF-16LE emoji: 128169.chr
  #
  # source://rspec-support//lib/rspec/support/encoded_string.rb#93
  def matching_encoding(string); end

  # http://stackoverflow.com/a/8711118/879854
  # Loop over chars in a string replacing chars
  # with invalid encoding, which is a pretty good proxy
  # for the invalid byte sequence that causes an ArgumentError
  #
  # source://rspec-support//lib/rspec/support/encoded_string.rb#124
  def remove_invalid_bytes(string); end

  class << self
    # source://rspec-support//lib/rspec/support/encoded_string.rb#143
    def pick_encoding(source_a, source_b); end
  end
end

# Ruby's default replacement string is:
#   U+FFFD ("\xEF\xBF\xBD"), for Unicode encoding forms, else
#   ?      ("\x3F")
#
# source://rspec-support//lib/rspec/support/encoded_string.rb#14
RSpec::Support::EncodedString::REPLACE = T.let(T.unsafe(nil), String)

# source://rspec-support//lib/rspec/support/encoded_string.rb#9
RSpec::Support::EncodedString::US_ASCII = T.let(T.unsafe(nil), String)

# Reduce allocations by storing constants.
#
# source://rspec-support//lib/rspec/support/encoded_string.rb#8
RSpec::Support::EncodedString::UTF_8 = T.let(T.unsafe(nil), String)

# Provides a means to fuzzy-match between two arbitrary objects.
# Understands array/hash nesting. Uses `===` or `==` to
# perform the matching.
#
# source://rspec-support//lib/rspec/support/fuzzy_matcher.rb#8
module RSpec::Support::FuzzyMatcher
  class << self
    # @api private
    # @return [Boolean]
    #
    # source://rspec-support//lib/rspec/support/fuzzy_matcher.rb#10
    def values_match?(expected, actual); end

    private

    # @private
    # @return [Boolean]
    #
    # source://rspec-support//lib/rspec/support/fuzzy_matcher.rb#29
    def arrays_match?(expected_list, actual_list); end

    # @private
    # @return [Boolean]
    #
    # source://rspec-support//lib/rspec/support/fuzzy_matcher.rb#38
    def hashes_match?(expected_hash, actual_hash); end
  end
end

# @private
#
# source://rspec-support//lib/rspec/support/hunk_generator.rb#9
class RSpec::Support::HunkGenerator
  # @return [HunkGenerator] a new instance of HunkGenerator
  #
  # source://rspec-support//lib/rspec/support/hunk_generator.rb#10
  def initialize(actual, expected); end

  # source://rspec-support//lib/rspec/support/hunk_generator.rb#15
  def hunks; end

  private

  # source://rspec-support//lib/rspec/support/hunk_generator.rb#32
  def actual_lines; end

  # source://rspec-support//lib/rspec/support/hunk_generator.rb#36
  def build_hunk(piece); end

  # source://rspec-support//lib/rspec/support/hunk_generator.rb#44
  def context_lines; end

  # source://rspec-support//lib/rspec/support/hunk_generator.rb#24
  def diffs; end

  # source://rspec-support//lib/rspec/support/hunk_generator.rb#28
  def expected_lines; end
end

# @api private
#
# source://rspec-support//lib/rspec/support.rb#40
RSpec::Support::KERNEL_METHOD_METHOD = T.let(T.unsafe(nil), UnboundMethod)

# Allows matchers to be used instead of providing keyword arguments. In
# practice, when this happens only the arity of the method is verified.
#
# @private
#
# source://rspec-support//lib/rspec/support/method_signature_verifier.rb#395
class RSpec::Support::LooseSignatureVerifier < ::RSpec::Support::MethodSignatureVerifier
  private

  # source://rspec-support//lib/rspec/support/method_signature_verifier.rb#398
  def split_args(*args); end
end

# If a matcher is used in a signature in place of keyword arguments, all
# keyword argument validation needs to be skipped since the matcher is
# opaque.
#
# Instead, keyword arguments will be validated when the method is called
# and they are actually known.
#
# @private
#
# source://rspec-support//lib/rspec/support/method_signature_verifier.rb#415
class RSpec::Support::LooseSignatureVerifier::SignatureWithKeywordArgumentsMatcher
  # @return [SignatureWithKeywordArgumentsMatcher] a new instance of SignatureWithKeywordArgumentsMatcher
  #
  # source://rspec-support//lib/rspec/support/method_signature_verifier.rb#416
  def initialize(signature); end

  # @return [Boolean]
  #
  # source://rspec-support//lib/rspec/support/method_signature_verifier.rb#436
  def has_kw_args_in?(args); end

  # source://rspec-support//lib/rspec/support/method_signature_verifier.rb#424
  def invalid_kw_args_from(_kw_args); end

  # source://rspec-support//lib/rspec/support/method_signature_verifier.rb#420
  def missing_kw_args_from(_kw_args); end

  # source://rspec-support//lib/rspec/support/method_signature_verifier.rb#428
  def non_kw_args_arity_description; end

  # @return [Boolean]
  #
  # source://rspec-support//lib/rspec/support/method_signature_verifier.rb#432
  def valid_non_kw_args?(*args); end
end

# Extracts info about the number of arguments and allowed/required
# keyword args of a given method.
#
# @private
#
# source://rspec-support//lib/rspec/support/method_signature_verifier.rb#13
class RSpec::Support::MethodSignature
  # @return [MethodSignature] a new instance of MethodSignature
  #
  # source://rspec-support//lib/rspec/support/method_signature_verifier.rb#16
  def initialize(method); end

  # @return [Boolean]
  #
  # source://rspec-support//lib/rspec/support/method_signature_verifier.rb#98
  def arbitrary_kw_args?; end

  # source://rspec-support//lib/rspec/support/method_signature_verifier.rb#38
  def classify_arity(arity = T.unsafe(nil)); end

  # source://rspec-support//lib/rspec/support/method_signature_verifier.rb#106
  def classify_parameters; end

  # Without considering what the last arg is, could it
  # contain keyword arguments?
  #
  # @return [Boolean]
  #
  # source://rspec-support//lib/rspec/support/method_signature_verifier.rb#92
  def could_contain_kw_args?(args); end

  # source://rspec-support//lib/rspec/support/method_signature_verifier.rb#51
  def description; end

  # If the last argument is Hash, Ruby will treat only symbol keys as keyword arguments
  # the rest will be grouped in another Hash and passed as positional argument.
  #
  # @return [Boolean]
  #
  # source://rspec-support//lib/rspec/support/method_signature_verifier.rb#84
  def has_kw_args_in?(args); end

  # source://rspec-support//lib/rspec/support/method_signature_verifier.rb#77
  def invalid_kw_args_from(given_kw_args); end

  # source://rspec-support//lib/rspec/support/method_signature_verifier.rb#14
  def max_non_kw_args; end

  # source://rspec-support//lib/rspec/support/method_signature_verifier.rb#14
  def min_non_kw_args; end

  # source://rspec-support//lib/rspec/support/method_signature_verifier.rb#73
  def missing_kw_args_from(given_kw_args); end

  # source://rspec-support//lib/rspec/support/method_signature_verifier.rb#23
  def non_kw_args_arity_description; end

  # source://rspec-support//lib/rspec/support/method_signature_verifier.rb#14
  def optional_kw_args; end

  # source://rspec-support//lib/rspec/support/method_signature_verifier.rb#14
  def required_kw_args; end

  # @return [Boolean]
  #
  # source://rspec-support//lib/rspec/support/method_signature_verifier.rb#102
  def unlimited_args?; end

  # @return [Boolean]
  #
  # source://rspec-support//lib/rspec/support/method_signature_verifier.rb#31
  def valid_non_kw_args?(positional_arg_count, optional_max_arg_count = T.unsafe(nil)); end
end

# source://rspec-support//lib/rspec/support/method_signature_verifier.rb#162
RSpec::Support::MethodSignature::INFINITY = T.let(T.unsafe(nil), Float)

# Encapsulates expectations about the number of arguments and
# allowed/required keyword args of a given method.
#
# @api private
#
# source://rspec-support//lib/rspec/support/method_signature_verifier.rb#219
class RSpec::Support::MethodSignatureExpectation
  # @api private
  # @return [MethodSignatureExpectation] a new instance of MethodSignatureExpectation
  #
  # source://rspec-support//lib/rspec/support/method_signature_verifier.rb#220
  def initialize; end

  # @api private
  # @return [Boolean]
  #
  # source://rspec-support//lib/rspec/support/method_signature_verifier.rb#247
  def empty?; end

  # @api private
  #
  # source://rspec-support//lib/rspec/support/method_signature_verifier.rb#231
  def expect_arbitrary_keywords; end

  # @api private
  #
  # source://rspec-support//lib/rspec/support/method_signature_verifier.rb#231
  def expect_arbitrary_keywords=(_arg0); end

  # @api private
  #
  # source://rspec-support//lib/rspec/support/method_signature_verifier.rb#231
  def expect_unlimited_arguments; end

  # @api private
  #
  # source://rspec-support//lib/rspec/support/method_signature_verifier.rb#231
  def expect_unlimited_arguments=(_arg0); end

  # @api private
  #
  # source://rspec-support//lib/rspec/support/method_signature_verifier.rb#229
  def keywords; end

  # @api private
  #
  # source://rspec-support//lib/rspec/support/method_signature_verifier.rb#254
  def keywords=(values); end

  # @api private
  #
  # source://rspec-support//lib/rspec/support/method_signature_verifier.rb#229
  def max_count; end

  # @api private
  # @raise [ArgumentError]
  #
  # source://rspec-support//lib/rspec/support/method_signature_verifier.rb#233
  def max_count=(number); end

  # @api private
  #
  # source://rspec-support//lib/rspec/support/method_signature_verifier.rb#229
  def min_count; end

  # @api private
  # @raise [ArgumentError]
  #
  # source://rspec-support//lib/rspec/support/method_signature_verifier.rb#240
  def min_count=(number); end
end

# Abstract base class for signature verifiers.
#
# @api private
#
# source://rspec-support//lib/rspec/support/method_signature_verifier.rb#280
class RSpec::Support::MethodSignatureVerifier
  # @api private
  # @return [MethodSignatureVerifier] a new instance of MethodSignatureVerifier
  #
  # source://rspec-support//lib/rspec/support/method_signature_verifier.rb#283
  def initialize(signature, args = T.unsafe(nil)); end

  # @api private
  #
  # source://rspec-support//lib/rspec/support/method_signature_verifier.rb#326
  def error_message; end

  # @api private
  #
  # source://rspec-support//lib/rspec/support/method_signature_verifier.rb#281
  def kw_args; end

  # @api private
  #
  # source://rspec-support//lib/rspec/support/method_signature_verifier.rb#281
  def max_non_kw_args; end

  # @api private
  #
  # source://rspec-support//lib/rspec/support/method_signature_verifier.rb#281
  def min_non_kw_args; end

  # @api private
  #
  # source://rspec-support//lib/rspec/support/method_signature_verifier.rb#281
  def non_kw_args; end

  # @api private
  # @return [Boolean]
  #
  # source://rspec-support//lib/rspec/support/method_signature_verifier.rb#318
  def valid?; end

  # @api private
  #
  # source://rspec-support//lib/rspec/support/method_signature_verifier.rb#290
  def with_expectation(expectation); end

  private

  # @api private
  # @return [Boolean]
  #
  # source://rspec-support//lib/rspec/support/method_signature_verifier.rb#357
  def arbitrary_kw_args?; end

  # @api private
  #
  # source://rspec-support//lib/rspec/support/method_signature_verifier.rb#353
  def invalid_kw_args; end

  # @api private
  #
  # source://rspec-support//lib/rspec/support/method_signature_verifier.rb#349
  def missing_kw_args; end

  # @api private
  #
  # source://rspec-support//lib/rspec/support/method_signature_verifier.rb#365
  def split_args(*args); end

  # @api private
  # @return [Boolean]
  #
  # source://rspec-support//lib/rspec/support/method_signature_verifier.rb#361
  def unlimited_args?; end

  # @api private
  # @return [Boolean]
  #
  # source://rspec-support//lib/rspec/support/method_signature_verifier.rb#345
  def valid_non_kw_args?; end
end

# On 1.9 and up, this is in core, so we just use the real one
#
# source://rspec-support//lib/rspec/support/reentrant_mutex.rb#65
class RSpec::Support::Mutex < ::Thread::Mutex
  class << self
    # source://rspec-support//lib/rspec/support/reentrant_mutex.rb#70
    def new; end
  end
end

# If you mock Mutex.new you break our usage of Mutex, so
# instead we capture the original method to return Mutexes.
#
# source://rspec-support//lib/rspec/support/reentrant_mutex.rb#68
RSpec::Support::Mutex::NEW_MUTEX_METHOD = T.let(T.unsafe(nil), Method)

# Provides query methods for different OS or OS features.
#
# @api private
#
# source://rspec-support//lib/rspec/support/ruby_features.rb#11
module RSpec::Support::OS
  private

  # @api private
  #
  # source://rspec-support//lib/rspec/support/ruby_features.rb#14
  def windows?; end

  # @api private
  #
  # source://rspec-support//lib/rspec/support/ruby_features.rb#18
  def windows_file_path?; end

  class << self
    # @api private
    # @return [Boolean]
    #
    # source://rspec-support//lib/rspec/support/ruby_features.rb#14
    def windows?; end

    # @api private
    # @return [Boolean]
    #
    # source://rspec-support//lib/rspec/support/ruby_features.rb#18
    def windows_file_path?; end
  end
end

# Provide additional output details beyond what `inspect` provides when
# printing Time, DateTime, or BigDecimal
#
# @api private
#
# source://rspec-support//lib/rspec/support/object_formatter.rb#10
class RSpec::Support::ObjectFormatter
  # @api private
  # @return [ObjectFormatter] a new instance of ObjectFormatter
  #
  # source://rspec-support//lib/rspec/support/object_formatter.rb#29
  def initialize(max_formatted_output_length = T.unsafe(nil)); end

  # @api private
  #
  # source://rspec-support//lib/rspec/support/object_formatter.rb#34
  def format(object); end

  # @api private
  #
  # source://rspec-support//lib/rspec/support/object_formatter.rb#13
  def max_formatted_output_length; end

  # @api private
  #
  # source://rspec-support//lib/rspec/support/object_formatter.rb#13
  def max_formatted_output_length=(_arg0); end

  # @api private
  #
  # source://rspec-support//lib/rspec/support/object_formatter.rb#72
  def prepare_array(array); end

  # @api private
  #
  # source://rspec-support//lib/rspec/support/object_formatter.rb#96
  def prepare_element(element); end

  # Prepares the provided object to be formatted by wrapping it as needed
  # in something that, when `inspect` is called on it, will produce the
  # desired output.
  #
  # This allows us to apply the desired formatting to hash/array data structures
  # at any level of nesting, simply by walking that structure and replacing items
  # with custom items that have `inspect` defined to return the desired output
  # for that item. Then we can just use `Array#inspect` or `Hash#inspect` to
  # format the entire thing.
  #
  # @api private
  #
  # source://rspec-support//lib/rspec/support/object_formatter.rb#58
  def prepare_for_inspection(object); end

  # @api private
  #
  # source://rspec-support//lib/rspec/support/object_formatter.rb#78
  def prepare_hash(input_hash); end

  # @api private
  # @return [Boolean]
  #
  # source://rspec-support//lib/rspec/support/object_formatter.rb#115
  def recursive_structure?(object); end

  # @api private
  #
  # source://rspec-support//lib/rspec/support/object_formatter.rb#88
  def sort_hash_keys(input_hash); end

  # @api private
  #
  # source://rspec-support//lib/rspec/support/object_formatter.rb#108
  def with_entering_structure(structure); end

  private

  # Returns the substring defined by the start_index and end_index
  # If the string ends with a partial ANSI code code then that
  # will be removed as printing partial ANSI
  # codes to the terminal can lead to corruption
  #
  # @api private
  #
  # source://rspec-support//lib/rspec/support/object_formatter.rb#270
  def truncate_string(str, start_index, end_index); end

  class << self
    # Methods are deferred to a default instance of the class to maintain the interface
    # For example, calling ObjectFormatter.format is still possible
    #
    # @api private
    #
    # source://rspec-support//lib/rspec/support/object_formatter.rb#17
    def default_instance; end

    # @api private
    #
    # source://rspec-support//lib/rspec/support/object_formatter.rb#21
    def format(object); end

    # @api private
    #
    # source://rspec-support//lib/rspec/support/object_formatter.rb#25
    def prepare_for_inspection(object); end
  end
end

# @api private
#
# source://rspec-support//lib/rspec/support/object_formatter.rb#129
class RSpec::Support::ObjectFormatter::BaseInspector < ::Struct
  # Returns the value of attribute formatter
  #
  # @return [Object] the current value of formatter
  #
  # source://rspec-support//lib/rspec/support/object_formatter.rb#129
  def formatter; end

  # Sets the attribute formatter
  #
  # @param value [Object] the value to set the attribute formatter to.
  # @return [Object] the newly set value
  #
  # source://rspec-support//lib/rspec/support/object_formatter.rb#129
  def formatter=(_); end

  # @api private
  # @raise [NotImplementedError]
  #
  # source://rspec-support//lib/rspec/support/object_formatter.rb#134
  def inspect; end

  # Returns the value of attribute object
  #
  # @return [Object] the current value of object
  #
  # source://rspec-support//lib/rspec/support/object_formatter.rb#129
  def object; end

  # Sets the attribute object
  #
  # @param value [Object] the value to set the attribute object to.
  # @return [Object] the newly set value
  #
  # source://rspec-support//lib/rspec/support/object_formatter.rb#129
  def object=(_); end

  # @api private
  #
  # source://rspec-support//lib/rspec/support/object_formatter.rb#138
  def pretty_print(pp); end

  class << self
    # source://rspec-support//lib/rspec/support/object_formatter.rb#129
    def [](*_arg0); end

    # @api private
    # @raise [NotImplementedError]
    # @return [Boolean]
    #
    # source://rspec-support//lib/rspec/support/object_formatter.rb#130
    def can_inspect?(_object); end

    # source://rspec-support//lib/rspec/support/object_formatter.rb#129
    def inspect; end

    # source://rspec-support//lib/rspec/support/object_formatter.rb#129
    def keyword_init?; end

    # source://rspec-support//lib/rspec/support/object_formatter.rb#129
    def members; end

    # source://rspec-support//lib/rspec/support/object_formatter.rb#129
    def new(*_arg0); end
  end
end

# @api private
#
# source://rspec-support//lib/rspec/support/object_formatter.rb#179
class RSpec::Support::ObjectFormatter::BigDecimalInspector < ::RSpec::Support::ObjectFormatter::BaseInspector
  # @api private
  #
  # source://rspec-support//lib/rspec/support/object_formatter.rb#184
  def inspect; end

  class << self
    # @api private
    # @return [Boolean]
    #
    # source://rspec-support//lib/rspec/support/object_formatter.rb#180
    def can_inspect?(object); end
  end
end

# @api private
#
# source://rspec-support//lib/rspec/support/object_formatter.rb#161
class RSpec::Support::ObjectFormatter::DateTimeInspector < ::RSpec::Support::ObjectFormatter::BaseInspector
  # ActiveSupport sometimes overrides inspect. If `ActiveSupport` is
  # defined use a custom format string that includes more time precision.
  #
  # @api private
  #
  # source://rspec-support//lib/rspec/support/object_formatter.rb#170
  def inspect; end

  class << self
    # @api private
    # @return [Boolean]
    #
    # source://rspec-support//lib/rspec/support/object_formatter.rb#164
    def can_inspect?(object); end
  end
end

# @api private
#
# source://rspec-support//lib/rspec/support/object_formatter.rb#162
RSpec::Support::ObjectFormatter::DateTimeInspector::FORMAT = T.let(T.unsafe(nil), String)

# @api private
#
# source://rspec-support//lib/rspec/support/object_formatter.rb#226
class RSpec::Support::ObjectFormatter::DelegatorInspector < ::RSpec::Support::ObjectFormatter::BaseInspector
  # @api private
  #
  # source://rspec-support//lib/rspec/support/object_formatter.rb#231
  def inspect; end

  class << self
    # @api private
    # @return [Boolean]
    #
    # source://rspec-support//lib/rspec/support/object_formatter.rb#227
    def can_inspect?(object); end
  end
end

# @api private
#
# source://rspec-support//lib/rspec/support/object_formatter.rb#189
class RSpec::Support::ObjectFormatter::DescribableMatcherInspector < ::RSpec::Support::ObjectFormatter::BaseInspector
  # @api private
  #
  # source://rspec-support//lib/rspec/support/object_formatter.rb#194
  def inspect; end

  class << self
    # @api private
    # @return [Boolean]
    #
    # source://rspec-support//lib/rspec/support/object_formatter.rb#190
    def can_inspect?(object); end
  end
end

# @api private
#
# source://rspec-support//lib/rspec/support/object_formatter.rb#11
RSpec::Support::ObjectFormatter::ELLIPSIS = T.let(T.unsafe(nil), String)

# @api private
#
# source://rspec-support//lib/rspec/support/object_formatter.rb#249
RSpec::Support::ObjectFormatter::INSPECTOR_CLASSES = T.let(T.unsafe(nil), Array)

# @api private
#
# source://rspec-support//lib/rspec/support/object_formatter.rb#119
class RSpec::Support::ObjectFormatter::InspectableItem < ::Struct
  # @api private
  #
  # source://rspec-support//lib/rspec/support/object_formatter.rb#120
  def inspect; end

  # @api private
  #
  # source://rspec-support//lib/rspec/support/object_formatter.rb#124
  def pretty_print(pp); end

  # Returns the value of attribute text
  #
  # @return [Object] the current value of text
  #
  # source://rspec-support//lib/rspec/support/object_formatter.rb#119
  def text; end

  # Sets the attribute text
  #
  # @param value [Object] the value to set the attribute text to.
  # @return [Object] the newly set value
  #
  # source://rspec-support//lib/rspec/support/object_formatter.rb#119
  def text=(_); end

  class << self
    # source://rspec-support//lib/rspec/support/object_formatter.rb#119
    def [](*_arg0); end

    # source://rspec-support//lib/rspec/support/object_formatter.rb#119
    def inspect; end

    # source://rspec-support//lib/rspec/support/object_formatter.rb#119
    def keyword_init?; end

    # source://rspec-support//lib/rspec/support/object_formatter.rb#119
    def members; end

    # source://rspec-support//lib/rspec/support/object_formatter.rb#119
    def new(*_arg0); end
  end
end

# @api private
#
# source://rspec-support//lib/rspec/support/object_formatter.rb#236
class RSpec::Support::ObjectFormatter::InspectableObjectInspector < ::RSpec::Support::ObjectFormatter::BaseInspector
  # @api private
  #
  # source://rspec-support//lib/rspec/support/object_formatter.rb#244
  def inspect; end

  class << self
    # @api private
    # @return [Boolean]
    #
    # source://rspec-support//lib/rspec/support/object_formatter.rb#237
    def can_inspect?(object); end
  end
end

# @api private
#
# source://rspec-support//lib/rspec/support/object_formatter.rb#143
class RSpec::Support::ObjectFormatter::TimeInspector < ::RSpec::Support::ObjectFormatter::BaseInspector
  # for 1.8.7
  #
  # @api private
  #
  # source://rspec-support//lib/rspec/support/object_formatter.rb#151
  def inspect; end

  class << self
    # @api private
    # @return [Boolean]
    #
    # source://rspec-support//lib/rspec/support/object_formatter.rb#146
    def can_inspect?(object); end
  end
end

# @api private
#
# source://rspec-support//lib/rspec/support/object_formatter.rb#144
RSpec::Support::ObjectFormatter::TimeInspector::FORMAT = T.let(T.unsafe(nil), String)

# @api private
#
# source://rspec-support//lib/rspec/support/object_formatter.rb#199
class RSpec::Support::ObjectFormatter::UninspectableObjectInspector < ::RSpec::Support::ObjectFormatter::BaseInspector
  # @api private
  #
  # source://rspec-support//lib/rspec/support/object_formatter.rb#209
  def inspect; end

  # @api private
  #
  # source://rspec-support//lib/rspec/support/object_formatter.rb#213
  def klass; end

  # http://stackoverflow.com/a/2818916
  #
  # @api private
  #
  # source://rspec-support//lib/rspec/support/object_formatter.rb#218
  def native_object_id; end

  class << self
    # @api private
    # @return [Boolean]
    #
    # source://rspec-support//lib/rspec/support/object_formatter.rb#202
    def can_inspect?(object); end
  end
end

# @api private
#
# source://rspec-support//lib/rspec/support/object_formatter.rb#200
RSpec::Support::ObjectFormatter::UninspectableObjectInspector::OBJECT_ID_FORMAT = T.let(T.unsafe(nil), String)

# Provides recursive constant lookup methods useful for
# constant stubbing.
#
# source://rspec-support//lib/rspec/support/recursive_const_methods.rb#7
module RSpec::Support::RecursiveConstMethods
  # @return [Boolean]
  #
  # source://rspec-support//lib/rspec/support/recursive_const_methods.rb#45
  def const_defined_on?(mod, const_name); end

  # source://rspec-support//lib/rspec/support/recursive_const_methods.rb#53
  def constants_defined_on(mod); end

  # @raise [NameError]
  #
  # source://rspec-support//lib/rspec/support/recursive_const_methods.rb#49
  def get_const_defined_on(mod, const_name); end

  # source://rspec-support//lib/rspec/support/recursive_const_methods.rb#73
  def normalize_const_name(const_name); end

  # @return [Boolean]
  #
  # source://rspec-support//lib/rspec/support/recursive_const_methods.rb#64
  def recursive_const_defined?(const_name); end

  # source://rspec-support//lib/rspec/support/recursive_const_methods.rb#58
  def recursive_const_get(const_name); end
end

# Allows a thread to lock out other threads from a critical section of code,
# while allowing the thread with the lock to reenter that section.
#
# Based on Monitor as of 2.2 -
# https://github.com/ruby/ruby/blob/eb7ddaa3a47bf48045d26c72eb0f263a53524ebc/lib/monitor.rb#L9
#
# Depends on Mutex, but Mutex is only available as part of core since 1.9.1:
#   exists - http://ruby-doc.org/core-1.9.1/Mutex.html
#   dne    - http://ruby-doc.org/core-1.9.0/Mutex.html
#
# @private
#
# source://rspec-support//lib/rspec/support/reentrant_mutex.rb#16
class RSpec::Support::ReentrantMutex
  # @return [ReentrantMutex] a new instance of ReentrantMutex
  #
  # source://rspec-support//lib/rspec/support/reentrant_mutex.rb#17
  def initialize; end

  # source://rspec-support//lib/rspec/support/reentrant_mutex.rb#23
  def synchronize; end

  private

  # source://rspec-support//lib/rspec/support/reentrant_mutex.rb#35
  def enter; end

  # source://rspec-support//lib/rspec/support/reentrant_mutex.rb#40
  def exit; end
end

# Provides query methods for different rubies
#
# @api private
#
# source://rspec-support//lib/rspec/support/ruby_features.rb#26
module RSpec::Support::Ruby
  private

  # @api private
  #
  # source://rspec-support//lib/rspec/support/ruby_features.rb#29
  def jruby?; end

  # @api private
  #
  # source://rspec-support//lib/rspec/support/ruby_features.rb#37
  def jruby_9000?; end

  # @api private
  #
  # source://rspec-support//lib/rspec/support/ruby_features.rb#33
  def jruby_version; end

  # @api private
  #
  # source://rspec-support//lib/rspec/support/ruby_features.rb#49
  def mri?; end

  # @api private
  #
  # source://rspec-support//lib/rspec/support/ruby_features.rb#45
  def non_mri?; end

  # @api private
  #
  # source://rspec-support//lib/rspec/support/ruby_features.rb#41
  def rbx?; end

  # @api private
  #
  # source://rspec-support//lib/rspec/support/ruby_features.rb#53
  def truffleruby?; end

  class << self
    # @api private
    # @return [Boolean]
    #
    # source://rspec-support//lib/rspec/support/ruby_features.rb#29
    def jruby?; end

    # @api private
    # @return [Boolean]
    #
    # source://rspec-support//lib/rspec/support/ruby_features.rb#37
    def jruby_9000?; end

    # @api private
    #
    # source://rspec-support//lib/rspec/support/ruby_features.rb#33
    def jruby_version; end

    # @api private
    # @return [Boolean]
    #
    # source://rspec-support//lib/rspec/support/ruby_features.rb#49
    def mri?; end

    # @api private
    # @return [Boolean]
    #
    # source://rspec-support//lib/rspec/support/ruby_features.rb#45
    def non_mri?; end

    # @api private
    # @return [Boolean]
    #
    # source://rspec-support//lib/rspec/support/ruby_features.rb#41
    def rbx?; end

    # @api private
    # @return [Boolean]
    #
    # source://rspec-support//lib/rspec/support/ruby_features.rb#53
    def truffleruby?; end
  end
end

# Provides query methods for ruby features that differ among
# implementations.
#
# @api private
#
# source://rspec-support//lib/rspec/support/ruby_features.rb#62
module RSpec::Support::RubyFeatures
  private

  # @api private
  #
  # source://rspec-support//lib/rspec/support/ruby_features.rb#85
  def caller_locations_supported?; end

  # @api private
  #
  # source://rspec-support//lib/rspec/support/ruby_features.rb#155
  def distincts_kw_args_from_positional_hash?; end

  # On JRuby 1.7 `--1.8` mode, `Process.respond_to?(:fork)` returns true,
  # but when you try to fork, it raises an error:
  #   NotImplementedError: fork is not available on this platform
  #
  # When we drop support for JRuby 1.7 and/or Ruby 1.8, we can drop
  # this special case.
  #
  # @api private
  # @return [Boolean]
  #
  # source://rspec-support//lib/rspec/support/ruby_features.rb#76
  def fork_supported?; end

  # https://rubyreferences.github.io/rubychanges/3.0.html#keyword-arguments-are-now-fully-separated-from-positional-arguments
  #
  # @api private
  # @return [Boolean]
  #
  # source://rspec-support//lib/rspec/support/ruby_features.rb#111
  def kw_arg_separation?; end

  # @api private
  # @return [Boolean]
  #
  # source://rspec-support//lib/rspec/support/ruby_features.rb#160
  def kw_args_supported?; end

  # @api private
  #
  # source://rspec-support//lib/rspec/support/ruby_features.rb#216
  def module_prepends_supported?; end

  # @api private
  #
  # source://rspec-support//lib/rspec/support/ruby_features.rb#212
  def module_refinement_supported?; end

  # @api private
  #
  # source://rspec-support//lib/rspec/support/ruby_features.rb#81
  def optional_and_splat_args_supported?; end

  # @api private
  # @return [Boolean]
  #
  # source://rspec-support//lib/rspec/support/ruby_features.rb#164
  def required_kw_args_supported?; end

  # @api private
  # @return [Boolean]
  #
  # source://rspec-support//lib/rspec/support/ruby_features.rb#146
  def ripper_supported?; end

  # @api private
  # @return [Boolean]
  #
  # source://rspec-support//lib/rspec/support/ruby_features.rb#90
  def supports_exception_cause?; end

  # @api private
  # @return [Boolean]
  #
  # source://rspec-support//lib/rspec/support/ruby_features.rb#168
  def supports_rebinding_module_methods?; end

  # @api private
  # @return [Boolean]
  #
  # source://rspec-support//lib/rspec/support/ruby_features.rb#100
  def supports_syntax_suggest?; end

  # @api private
  # @return [Boolean]
  #
  # source://rspec-support//lib/rspec/support/ruby_features.rb#121
  def supports_taint?; end

  class << self
    # @api private
    # @return [Boolean]
    #
    # source://rspec-support//lib/rspec/support/ruby_features.rb#85
    def caller_locations_supported?; end

    # @api private
    # @return [Boolean]
    #
    # source://rspec-support//lib/rspec/support/ruby_features.rb#155
    def distincts_kw_args_from_positional_hash?; end

    # source://rspec-support//lib/rspec/support/ruby_features.rb#76
    def fork_supported?; end

    # source://rspec-support//lib/rspec/support/ruby_features.rb#111
    def kw_arg_separation?; end

    # source://rspec-support//lib/rspec/support/ruby_features.rb#160
    def kw_args_supported?; end

    # @api private
    # @return [Boolean]
    #
    # source://rspec-support//lib/rspec/support/ruby_features.rb#216
    def module_prepends_supported?; end

    # @api private
    # @return [Boolean]
    #
    # source://rspec-support//lib/rspec/support/ruby_features.rb#212
    def module_refinement_supported?; end

    # @api private
    # @return [Boolean]
    #
    # source://rspec-support//lib/rspec/support/ruby_features.rb#81
    def optional_and_splat_args_supported?; end

    # source://rspec-support//lib/rspec/support/ruby_features.rb#164
    def required_kw_args_supported?; end

    # source://rspec-support//lib/rspec/support/ruby_features.rb#146
    def ripper_supported?; end

    # source://rspec-support//lib/rspec/support/ruby_features.rb#90
    def supports_exception_cause?; end

    # source://rspec-support//lib/rspec/support/ruby_features.rb#168
    def supports_rebinding_module_methods?; end

    # source://rspec-support//lib/rspec/support/ruby_features.rb#100
    def supports_syntax_suggest?; end

    # source://rspec-support//lib/rspec/support/ruby_features.rb#121
    def supports_taint?; end
  end
end

# Figures out whether a given method can accept various arguments.
# Surprisingly non-trivial.
#
# @private
#
# source://rspec-support//lib/rspec/support/method_signature_verifier.rb#389
RSpec::Support::StrictSignatureVerifier = RSpec::Support::MethodSignatureVerifier

# source://rspec-support//lib/rspec/support/version.rb#5
module RSpec::Support::Version; end

# source://rspec-support//lib/rspec/support/version.rb#6
RSpec::Support::Version::STRING = T.let(T.unsafe(nil), String)

# source://rspec-support//lib/rspec/support/warnings.rb#8
module RSpec::Support::Warnings
  # source://rspec-support//lib/rspec/support/warnings.rb#9
  def deprecate(deprecated, options = T.unsafe(nil)); end

  # Used internally to print deprecation warnings
  # when rspec-core isn't loaded
  #
  # @private
  #
  # source://rspec-support//lib/rspec/support/warnings.rb#17
  def warn_deprecation(message, options = T.unsafe(nil)); end

  # Used internally to print longer warnings
  #
  # @private
  #
  # source://rspec-support//lib/rspec/support/warnings.rb#31
  def warn_with(message, options = T.unsafe(nil)); end

  # Used internally to print warnings
  #
  # @private
  #
  # source://rspec-support//lib/rspec/support/warnings.rb#24
  def warning(text, options = T.unsafe(nil)); end
end

# source://rspec-support//lib/rspec/support/with_keywords_when_needed.rb#7
module RSpec::Support::WithKeywordsWhenNeeded
  private

  # Remove this in RSpec 4 in favour of explicitly passed in kwargs where
  # this is used. Works around a warning in Ruby 2.7
  #
  # source://rspec-support//lib/rspec/support/with_keywords_when_needed.rb#17
  def class_exec(klass, *args, **_arg2, &block); end

  class << self
    # source://rspec-support//lib/rspec/support/with_keywords_when_needed.rb#17
    def class_exec(klass, *args, **_arg2, &block); end
  end
end