compat: deprecate Utils::JSON in favor of corelib JSON.

Library/Homebrew/compat.rb

@@ -18,3 +18,4 @@ require "compat/language/haskell"
 require "compat/xcode"
 require "compat/software_spec"
 require "compat/utils"
+require "compat/json"

Library/Homebrew/compat/json.rb

@@ -7,16 +7,19 @@ module Utils
     Error = Class.new(StandardError)
 
     def load(str)
-      ::JSON.load(str)
+      odeprecated "Utils::JSON.load", "JSON.parse"
+      ::JSON.parse(str)
     rescue ::JSON::ParserError => e
       raise Error, e.message
     end
 
     def dump(obj)
+      odeprecated "Utils::JSON.dump", "JSON.generate"
       ::JSON.generate(obj)
     end
 
     def stringify_keys(obj)
+      odeprecated "Utils::JSON.stringify_keys"
       case obj
       when Array
         obj.map { |val| stringify_keys(val) }

Library/Homebrew/utils.rb

@@ -9,7 +9,6 @@ require "utils/git"
 require "utils/github"
 require "utils/hash"
 require "utils/inreplace"
-require "utils/json"
 require "utils/popen"
 require "utils/tty"