Use nested module declaration

src/kemal/base_log_handler.cr

@@ -1,3 +1,4 @@
+module Kemal
   # All loggers must inherit from `Kemal::BaseLogHandler`.
   class Kemal::BaseLogHandler < HTTP::Handler
     def initialize
@@ -10,3 +11,4 @@ class Kemal::BaseLogHandler < HTTP::Handler
     def write(message)
     end
   end
+end

src/kemal/common_log_handler.cr

@@ -1,4 +1,5 @@
-class Kemal::CommonLogHandler < Kemal::BaseLogHandler
+module Kemal
+  class CommonLogHandler < Kemal::BaseLogHandler
     @handler : IO::FileDescriptor
     getter handler
 
@@ -31,3 +32,4 @@ class Kemal::CommonLogHandler < Kemal::BaseLogHandler
       "#{(millis * 1000).round(2)}µs"
     end
   end
+end

src/kemal/middleware/ssl.cr

@@ -1,4 +1,5 @@
 module Kemal::Middleware
+  # This middleware adds SSL / TLS support.
   class SSL
     getter context
 

src/kemal/null_log_handler.cr

@@ -1,3 +1,5 @@
+module Kemal
   # This is here to represent the logger corresponding to Null Object Pattern.
-class Kemal::NullLogHandler < Kemal::BaseLogHandler
+  class NullLogHandler < Kemal::BaseLogHandler
+  end
 end

src/kemal/param_parser.cr

@@ -1,11 +1,12 @@
 require "json"
 
+module Kemal
   # ParamParser parses the request contents including query_params and body
   # and converts them into a params hash which you can within the environment
   # context.
   alias AllParamTypes = Nil | String | Int64 | Float64 | Bool | Hash(String, JSON::Type) | Array(JSON::Type)
 
-class Kemal::ParamParser
+  class ParamParser
     URL_ENCODED_FORM = "application/x-www-form-urlencoded"
     APPLICATION_JSON = "application/json"
 
@@ -71,3 +72,4 @@ class Kemal::ParamParser
       HTTP::Params.parse(part || "")
     end
   end
+end

src/kemal/route.cr

@@ -1,7 +1,8 @@
+module Kemal
   # Route is the main building block of Kemal.
   # It takes 3 parameters: Method, path and a block to specify
   # what action to be done if the route is matched.
-class Kemal::Route
+  class Route
     getter handler
     @handler : HTTP::Server::Context -> String
     @method : String
@@ -10,3 +11,4 @@ class Kemal::Route
       @handler = ->(context : HTTP::Server::Context) { handler.call(context).to_s }
     end
   end
+end

src/kemal/route_handler.cr

@@ -1,9 +1,9 @@
-require "http/server"
 require "radix"
 
+module Kemal
   # Kemal::RouteHandler is the main handler which handles all the HTTP requests. Routing, parsing, rendering e.g
   # are done in this handler.
-class Kemal::RouteHandler < HTTP::Handler
+  class RouteHandler < HTTP::Handler
     INSTANCE = new
 
     property tree
@@ -51,3 +51,4 @@ class Kemal::RouteHandler < HTTP::Handler
       @tree.add node, route
     end
   end
+end

src/kemal/static_file_handler.cr

@@ -1,11 +1,13 @@
+module Kemal
   # Kemal::StaticFileHandler is used to serve static files(.js/.css/.png e.g).
   # This handler is on by default and you can disable it like.
   #
   #   serve_static false
   #
-class Kemal::StaticFileHandler < HTTP::StaticFileHandler
+  class StaticFileHandler < HTTP::StaticFileHandler
     def call(context)
       return call_next(context) if context.request.path.not_nil! == "/"
       super
     end
   end
+end

src/kemal/websocket_handler.cr

@@ -1,6 +1,7 @@
+module Kemal
   # Kemal::WebSocketHandler is used for building a WebSocket route.
   # For each WebSocket route a new handler is created and registered to global handlers.
-class Kemal::WebSocketHandler < HTTP::WebSocketHandler
+  class WebSocketHandler < HTTP::WebSocketHandler
     def initialize(@path : String, &@proc : HTTP::WebSocket, HTTP::Server::Context -> Void)
       Kemal.config.add_ws_handler self
     end
@@ -10,3 +11,4 @@ class Kemal::WebSocketHandler < HTTP::WebSocketHandler
       super
     end
   end
+end