Drop multi_json (#172)

Author: mkon

api_valve.gemspec

@@ -15,7 +15,7 @@ Gem::Specification.new do |s|
 
   s.add_dependency 'activesupport', '>= 6.1', '< 7.1'
   s.add_dependency 'faraday', '>= 0.14', '<= 2.5.2'
-  s.add_dependency 'multi_json', '~> 1.13'
+  s.add_dependency 'json', '>= 2.0'
   s.add_dependency 'rack', '>= 2', '< 4'
 
   s.add_development_dependency 'json_spec', '~> 1.1'

lib/api_valve.rb

@@ -10,7 +10,7 @@
 require 'active_support/rescuable'
 require 'benchmark'
 require 'faraday'
-require 'multi_json'
+require 'json'
 require 'logger'
 require 'rack'
 

lib/api_valve/error_responder.rb

@@ -8,7 +8,7 @@ def call
       Rack::Response[
         status,
         {'Content-Type' => 'application/vnd.api+json'},
-        MultiJson.dump({errors: [json_error]}, mode: :compat)
+        JSON.generate({errors: [json_error]}, mode: :compat)
       ]
     end