removing usage of global unshareable object in default options

lib/httpx/loggable.rb

@@ -13,11 +13,14 @@ module HTTPX
       white: 37,
     }.freeze
 
+    USE_DEBUG_LOG = ENV.key?("HTTPX_DEBUG")
+
     def log(level: @options.debug_level, color: nil, &msg)
-      return unless @options.debug
       return unless @options.debug_level >= level
 
-      debug_stream = @options.debug
+      debug_stream = @options.debug || ($stderr if USE_DEBUG_LOG)
+
+      return unless debug_stream
 
       message = (+"" << msg.call << "\n")
       message = "\e[#{COLORS[color]}m#{message}\e[0m" if color && debug_stream.respond_to?(:isatty) && debug_stream.isatty
@@ -25,9 +28,6 @@ module HTTPX
     end
 
     def log_exception(ex, level: @options.debug_level, color: nil)
-      return unless @options.debug
-      return unless @options.debug_level >= level
-
       log(level: level, color: color) { ex.full_message }
     end
   end

lib/httpx/options.rb

@@ -29,7 +29,7 @@ module HTTPX
 
     DEFAULT_OPTIONS = {
       :max_requests => Float::INFINITY,
-      :debug => ENV.key?("HTTPX_DEBUG") ? STDERR : nil,
+      :debug => nil,
       :debug_level => (ENV["HTTPX_DEBUG"] || 1).to_i,
       :ssl => EMPTY_HASH,
       :http2_settings => { settings_enable_push: 0 }.freeze,

sig/loggable.rbs

@@ -4,6 +4,8 @@ module HTTPX
   end
 
   module Loggable
+    USE_DEBUG_LOGS: bool
+
     COLORS: Hash[Symbol, Integer]
 
     def log: (?level: Integer?, ?color: Symbol?) { () -> String } -> void

sig/options.rbs

@@ -136,7 +136,7 @@ module HTTPX
 
     def do_initialize: (?options options) -> void
 
-    def access_option: (Hash | Object obj, Symbol k, Hash[Symbol, Symbol] ivar_map)
+    def access_option: (Hash | Object | nil obj, Symbol k, Hash[Symbol, Symbol]? ivar_map) -> untyped
   end
 
   type options = Options | Hash[Symbol, untyped]