diff --git a/CHANGELOG.md b/CHANGELOG.md
index b1ae942..02dde64 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,7 @@
- Add support for slots ([#15](https://github.com/avo-hq/class_variants/pull/15))
- Allow passing additional classes when render ([#17](https://github.com/avo-hq/class_variants/pull/17))
- Add helper module for defining variants ([#18](https://github.com/avo-hq/class_variants/pull/18))
+- Add support for post process classes ([#16](https://github.com/avo-hq/class_variants/pull/16))
## 0.0.8 (2024-10-24)
- Deprecate usage of positional arguments ([#12](https://github.com/avo-hq/class_variants/pull/12))
diff --git a/Gemfile b/Gemfile
index c5687eb..a9445bb 100644
--- a/Gemfile
+++ b/Gemfile
@@ -11,3 +11,7 @@ gem "rubocop-minitest", require: false
gem "rubocop-rake", require: false
gem "standard", ">= 1.35.1", require: false
gem "standard-performance", require: false
+
+install_if -> { !RUBY_VERSION.start_with?("3.0") } do
+ gem "tailwind_merge"
+end
diff --git a/Gemfile.lock b/Gemfile.lock
index b33918a..e2a63e4 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -15,6 +15,7 @@ GEM
json (2.7.2)
language_server-protocol (3.17.0.3)
lint_roller (1.1.0)
+ lru_redux (1.1.0)
minitest (5.25.1)
parallel (1.26.3)
parser (3.3.5.0)
@@ -64,6 +65,8 @@ GEM
lint_roller (~> 1.1)
rubocop-performance (~> 1.22.0)
stringio (3.1.1)
+ tailwind_merge (0.13.1)
+ lru_redux (~> 1.1)
unicode-display_width (2.6.0)
PLATFORMS
@@ -81,6 +84,7 @@ DEPENDENCIES
rubocop-rake
standard (>= 1.35.1)
standard-performance
+ tailwind_merge
BUNDLED WITH
2.5.20
diff --git a/lib/class_variants.rb b/lib/class_variants.rb
index 037268b..1b25b74 100644
--- a/lib/class_variants.rb
+++ b/lib/class_variants.rb
@@ -1,11 +1,20 @@
require "class_variants/version"
require "class_variants/action_view/helpers"
+require "class_variants/configuration"
require "class_variants/instance"
require "class_variants/helper"
require "class_variants/railtie" if defined?(Rails)
module ClassVariants
class << self
+ def configuration
+ @configuration ||= Configuration.new
+ end
+
+ def configure(&block)
+ yield(configuration)
+ end
+
def build(...)
Instance.new(...)
end
diff --git a/lib/class_variants/configuration.rb b/lib/class_variants/configuration.rb
new file mode 100644
index 0000000..6716879
--- /dev/null
+++ b/lib/class_variants/configuration.rb
@@ -0,0 +1,11 @@
+module ClassVariants
+ class Configuration
+ def process_classes_with(&block)
+ if block_given?
+ @process_classes_with = block
+ else
+ @process_classes_with
+ end
+ end
+ end
+end
diff --git a/lib/class_variants/instance.rb b/lib/class_variants/instance.rb
index ab8d698..55c170e 100644
--- a/lib/class_variants/instance.rb
+++ b/lib/class_variants/instance.rb
@@ -34,7 +34,7 @@ def render(slot = :default, **overrides)
result.compact!
# Return the final token list
- result.join " "
+ with_classess_processor(result.join(" "))
end
private
@@ -97,5 +97,13 @@ def expand_compound_variants(compound_variants)
compound_variant.merge(slot: :default)
end
end
+
+ def with_classess_processor(classes)
+ if ClassVariants.configuration.process_classes_with.respond_to?(:call)
+ ClassVariants.configuration.process_classes_with.call(classes)
+ else
+ classes
+ end
+ end
end
end
diff --git a/lib/generators/class_variants/install/USAGE b/lib/generators/class_variants/install/USAGE
new file mode 100644
index 0000000..2081de0
--- /dev/null
+++ b/lib/generators/class_variants/install/USAGE
@@ -0,0 +1,2 @@
+Description:
+ Generates initializer file for configure ClassVariants in your application.
diff --git a/lib/generators/class_variants/install/install_generator.rb b/lib/generators/class_variants/install/install_generator.rb
new file mode 100644
index 0000000..e5b6c5e
--- /dev/null
+++ b/lib/generators/class_variants/install/install_generator.rb
@@ -0,0 +1,11 @@
+module ClassVariants
+ module Generators
+ class InstallGenerator < Rails::Generators::Base
+ source_root File.expand_path("templates", __dir__)
+
+ def copy_initializer
+ template "class_variants.rb", "config/initializers/class_variants.rb"
+ end
+ end
+ end
+end
diff --git a/lib/generators/class_variants/install/templates/class_variants.rb.tt b/lib/generators/class_variants/install/templates/class_variants.rb.tt
new file mode 100644
index 0000000..2662330
--- /dev/null
+++ b/lib/generators/class_variants/install/templates/class_variants.rb.tt
@@ -0,0 +1,8 @@
+# frozen_string_literal: true
+
+# ClassVariants.configure do |config|
+# # allow to post process classes with an external utility like TailwindMerger
+# config.process_classes_with do |classes|
+# TailwindMerge::Merger.new.merge(classes)
+# end
+# end
diff --git a/test/configuration_test.rb b/test/configuration_test.rb
new file mode 100644
index 0000000..0a2d525
--- /dev/null
+++ b/test/configuration_test.rb
@@ -0,0 +1,19 @@
+require "test_helper"
+
+class ConfigurationTest < Minitest::Test
+ def teardown
+ ClassVariants.configuration.instance_variable_set(:@process_classes_with, nil)
+ end
+
+ def test_configuration_process_classes_with_default
+ refute ClassVariants.configuration.process_classes_with
+ end
+
+ def test_configure
+ ClassVariants.configure do |config|
+ config.process_classes_with { |classes| classes }
+ end
+
+ assert_respond_to ClassVariants.configuration.process_classes_with, :call
+ end
+end
diff --git a/test/process_classes_with_test.rb b/test/process_classes_with_test.rb
new file mode 100644
index 0000000..7b8309c
--- /dev/null
+++ b/test/process_classes_with_test.rb
@@ -0,0 +1,34 @@
+require "test_helper"
+
+class ProcessClassesWithTest < Minitest::Test
+ def teardown
+ ClassVariants.configuration.instance_variable_set(:@process_classes_with, nil)
+ end
+
+ def test_without_classes_processor
+ assert_equal "border rounded px-2 py-1 p-5", ClassVariants.build(base: "border rounded px-2 py-1 p-5").render
+ end
+
+ def test_with_classes_processor
+ ClassVariants.configure do |config|
+ config.process_classes_with do |classes|
+ merger.merge(classes)
+ end
+ end
+
+ assert_equal "border rounded p-5", ClassVariants.build(base: "border rounded px-2 py-1 p-5").render
+ end
+
+ private
+
+ def merger
+ require "tailwind_merge"
+ TailwindMerge::Merger.new
+ rescue LoadError
+ Class.new do
+ def merge(classes)
+ classes.gsub("px-2 py-1 ", "")
+ end
+ end.new
+ end
+end