Precompile assets on release to get rid of bootstrap runtime dependency.

.gitignore

@@ -1,4 +1,5 @@
 *.gem
+*.css
 .bundle
 Gemfile.lock
 pkg/*

.travis.yml

@@ -40,6 +40,7 @@ notifications:
   email: false
   slack:
     secure: 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
+before_deploy: rake assets:compile
 deploy:
   provider: rubygems
   api_key:

Gemfile

@@ -1,6 +1,8 @@
 source "https://rubygems.org"
 gemspec
 
+gem "bootstrap", "= 4.0.0.alpha3"
+
 group :test do
   version = ENV["RAILS_VERSION"] || "master"
   if version == "master"

Rakefile

@@ -14,3 +14,26 @@ Rake::TestTask.new("test:integration") do |test|
 end
 
 task default: :test
+
+namespace :assets do
+  stylesheets_path = "app/assets/stylesheets"
+  stylesheet_file = "flipflop.css"
+  stylesheet_path = stylesheets_path + "/" + stylesheet_file
+
+  task :compile do
+    require "bundler/setup"
+    require "flipflop"
+    require "sprockets"
+    require "bootstrap"
+
+    environment = Sprockets::Environment.new
+    environment.append_path stylesheets_path
+    environment.append_path Bootstrap.stylesheets_path
+    environment.css_compressor = :scss
+    File.write(stylesheet_path, environment[stylesheet_file])
+  end
+
+  task :clean do
+    FileUtils.rm(stylesheet_path)
+  end
+end

app/assets/stylesheets/flipflop.scss

@@ -1,5 +1,18 @@
 $enable-transitions: true;
-@import "bootstrap";
+
+@import "bootstrap/variables";
+@import "bootstrap/mixins";
+@import "bootstrap/normalize";
+@import "bootstrap/print";
+
+@import "bootstrap/reboot";
+@import "bootstrap/type";
+@import "bootstrap/grid";
+@import "bootstrap/tables";
+@import "bootstrap/buttons";
+
+@import "bootstrap/button-group";
+@import "bootstrap/labels";
 
 section.flipflop {
   @extend .container-fluid;

app/views/flipflop/features/index.html.erb

@@ -30,13 +30,13 @@
                   <%= submit_tag "on",
                     type: "submit",
                     class: @feature_set.strategy_status(strategy, feature) == "on" ? "active" : nil,
-                    disabled: strategy.switchable? ? false : true
+                    disabled: !strategy.switchable?
                   -%>
 
                   <%= submit_tag "off",
                     type: "submit",
                     class: @feature_set.strategy_status(strategy, feature) == "off" ? "active" : nil,
-                    disabled: strategy.switchable? ? false : true
+                    disabled: !strategy.switchable?
                   -%>
                 </div>
               <% end -%>

flipflop.gemspec

@@ -13,11 +13,10 @@ Gem::Specification.new do |s|
   s.description = %q{Declarative API for specifying features, switchable in declaration, database and cookies.}
   s.license  = "MIT"
 
-  s.files         = `git ls-files`.split("\n")
+  s.files         = `git ls-files`.split("\n").map { |f| f.sub(".scss", ".css") }
   s.test_files    = `git ls-files -- {test,spec,features}/*`.split("\n")
   s.executables   = `git ls-files -- bin/*`.split("\n").map{ |f| File.basename(f) }
   s.require_paths = ["lib"]
 
   s.add_dependency("activesupport", ">= 4.0")
-  s.add_dependency("bootstrap", "~> 4.0.0.alpha3")
 end