Reduce nesting by collapsing modules with ::

src/spectator/dsl/builder.cr

@@ -1,5 +1,4 @@
-module Spectator
+module Spectator::DSL
-  module DSL
   module Builder
     extend self
 
@@ -61,5 +60,4 @@ module Spectator
       root_group.build(nil, Internals::SampleValues.empty)
     end
   end
-  end
 end

src/spectator/dsl/example_dsl.cr

@@ -1,7 +1,6 @@
 require "./matcher_dsl"
 
-module Spectator
+module Spectator::DSL
-  module DSL
   module ExampleDSL
     include MatcherDSL
 
@@ -13,5 +12,4 @@ module Spectator
       ::Spectator::Expectation.new({{actual.stringify}}, {{actual}})
     end
   end
-  end
 end

src/spectator/dsl/example_factory.cr

@@ -1,5 +1,4 @@
-module Spectator
+module Spectator::DSL
-  module DSL
   class ExampleFactory
     def initialize(@example_type : Example.class)
     end
@@ -8,5 +7,4 @@ module Spectator
       @example_type.new(group, sample_values)
     end
   end
-  end
 end

src/spectator/dsl/example_group_builder.cr

@@ -1,5 +1,4 @@
-module Spectator
+module Spectator::DSL
-  module DSL
   class ExampleGroupBuilder
     alias Child = ExampleFactory | ExampleGroupBuilder
 
@@ -56,5 +55,4 @@ module Spectator
       )
     end
   end
-  end
 end

src/spectator/dsl/given_example_group_builder.cr

@@ -1,7 +1,6 @@
 require "./example_group_builder"
 
-module Spectator
+module Spectator::DSL
-  module DSL
   class GivenExampleGroupBuilder(T) < ExampleGroupBuilder
 
     def initialize(what : String, @collection : Array(T), @symbol : Symbol)
@@ -25,5 +24,4 @@ module Spectator
       end
     end
   end
-  end
 end

src/spectator/dsl/matcher_dsl.cr

@@ -1,11 +1,9 @@
 require "../matchers"
 
-module Spectator
+module Spectator::DSL
-  module DSL
   module MatcherDSL
     macro eq(expected)
       ::Spectator::Matchers::EqualityMatcher.new({{expected.stringify}}, {{expected}})
     end
   end
-  end
 end

src/spectator/dsl/structure_dsl.cr

@@ -1,7 +1,6 @@
 require "../example_group"
 
-module Spectator
+module Spectator::DSL
-  module DSL
   module StructureDSL
 
     def initialize(sample_values : Internals::SampleValues)
@@ -196,5 +195,4 @@ module Spectator
       end
     end
   end
-  end
 end

src/spectator/formatters/default_formatter.cr

@@ -1,8 +1,7 @@
 require "./formatter"
 require "colorize"
 
-module Spectator
+module Spectator::Formatters
-  module Formatters
   class DefaultFormatter < Formatter
     SUCCESS_COLOR = :green
     FAILURE_COLOR = :red
@@ -116,5 +115,4 @@ module Spectator
       return sprintf("%i days %i:%02i:%02i", days, hours, minutes, int_seconds)
     end
   end
-  end
 end

src/spectator/formatters/formatter.cr

@@ -1,10 +1,8 @@
-module Spectator
+module Spectator::Formatters
-  module Formatters
   abstract class Formatter
     abstract def start_suite
     abstract def end_suite(results : TestResults)
     abstract def start_example(example : Example)
     abstract def end_example(result : Result)
   end
-  end
 end

src/spectator/internals/sample_values.cr

@@ -1,7 +1,6 @@
 require "./value_wrapper"
 
-module Spectator
+module Spectator::Internals
-  module Internals
   struct SampleValues
     private record Entry, name : String, wrapper : ValueWrapper
 
@@ -23,5 +22,4 @@ module Spectator
       @values[id].wrapper
     end
   end
-  end
 end

src/spectator/internals/typed_value_wrapper.cr

@@ -1,12 +1,10 @@
 require "./value_wrapper"
 
-module Spectator
+module Spectator::Internals
-  module Internals
   class TypedValueWrapper(T) < ValueWrapper
     getter value : T
 
     def initialize(@value : T)
     end
   end
-  end
 end

src/spectator/internals/value_wrapper.cr

@@ -1,5 +1,4 @@
-module Spectator
+module Spectator::Internals
-  module Internals
   # Base class for proxying test values to examples.
   # This abstraction is required for inferring types.
   # The `DSL#let` macro makes heavy use of this.
@@ -7,5 +6,4 @@ module Spectator
     # Retrieves the underlying value.
     abstract def value
   end
-  end
 end

src/spectator/matchers/equality_matcher.cr

@@ -1,7 +1,6 @@
 require "./matcher"
 
-module Spectator
+module Spectator::Matchers
-  module Matchers
   class EqualityMatcher(T) < Matcher
     def initialize(label, @expected : T)
       super(label)
@@ -19,5 +18,4 @@ module Spectator
       "Expected #{expectation.label} to not equal #{label} (using ==)"
     end
   end
-  end
 end

src/spectator/matchers/matcher.cr

@@ -1,5 +1,4 @@
-module Spectator
+module Spectator::Matchers
-  module Matchers
   abstract class Matcher
     private getter label : String
 
@@ -10,5 +9,4 @@ module Spectator
     abstract def message(expectation : Expectation) : String
     abstract def negated_message(expectation : Expectation) : String
   end
-  end
 end