prefer Hash.key? to !Hash[].nil?

Author: flavorjones

Diff for: README.md

@@ -293,7 +293,7 @@ If you want unminified assets, you can:
 - pass a `debug` argument to the rake task, i.e. `rails tailwindcss:build[debug]` or `rails tailwindcss:watch[debug]`.
 - set an environment variable named `TAILWINDCSS_DEBUG` with a non-blank value
 
-If both values are set, the environment variable will take precedence over the rake task argument.  
+If both values are set, the environment variable will take precedence over the rake task argument.
 
 ### Live rebuild
 

Diff for: lib/tailwindcss/commands.rb

@@ -4,7 +4,7 @@ module Tailwindcss
   module Commands
     class << self
       def compile_command(debug: false, **kwargs)
-        debug = ENV["TAILWINDCSS_DEBUG"].present? unless ENV["TAILWINDCSS_DEBUG"].nil?
+        debug = ENV["TAILWINDCSS_DEBUG"].present? if ENV.key?("TAILWINDCSS_DEBUG")
         rails_root = defined?(Rails) ? Rails.root : Pathname.new(Dir.pwd)
 
         command = [