Kitten

Kitten is a components library based on Sass and React. It provides mixins to create flexible components based on your own brand elements (colors, fonts, typographic scale, etc.).

It is an npm module coupled with a Rails engine that provides an integrated styleguide. It should eventually be separated into two different repositories.

Dependencies

• Ruby 2.2.4
• Bundler (gem install bundler)
• Node ~> 6.0

Table of content

• Installation
  • Npm
  • Rails engine
• Usage
  • CSS components
  • React components
  • Style Guide
• Development
• Contributing
• Release

Installation

You can choose to use the npm module only or with the Rails engine.

Npm

npm install kitten-components --save-dev

Rails engine

Add this line to your application's Gemfile:

# Style guide
gem 'kitten'

And these routes to your routes.rb:

mount Kitten::Engine, at: '/kitten' if Rails.env.development?

You can then run bundle and restart your server.

kitten is designed to serve assets with Webpack through React on Rails.

For more detailed instructions, see Rails webpack configuration.

Usage

CSS components

Import kitten and the components your want to use in your application:

@import 'kitten';

@include k-Button;

You can define your own font families, typography settings and colors by overriding the the $k-fonts, $k-typography and $k-colors options. Check out the default config for an example.

React components

You can render React components directly in your js bundle:

const yourLoanSimulatorProps = {}

ReactDOM.render(
  React.createElement(LoanSimulator, yourLoanSimulatorProps),
  document.getElementById('loan-simulator')
)

Or, use React on Rails view helper in your .erb file:

<%= react_component('LoanSimulator', props: your_loan_simulator_props) %>

Style guide

Kitten provides a styleguide interface through a Rails engine. You can run see it in your browser by downloading kitten and launching the dummy app or by installing the style guide in your Rails app.

The engine provides some configuration options that can be defined in config/initializers/kitten.rb:

• webpack_output_bundle: This option is used to pass an output bundle name for hot reloading. By default, it is set to application-bundle.

Example configuration:

Kitten.configure do |config|
  config.webpack_output_bundle = 'your-custom-bundle'
end

Development

Components

Check out the guidelines to start creating new components!

Install

$ bin/kitten install

Dummy style guide

To launch the style guide on the dummy app:

$ bin/kitten start

Then visit http://localhost:3000

To stop the style guide on the dummy app:

$ bin/kitten stop

To check wether the dummy app is running or not:

$ bin/kitten status

To tail the dummy app logs in real time:

$ bin/kitten log

Hit Ctrl+C to stop the tail.

To share the dummy app with production settings (to share via ngrok for example), you can compile the assets and serve a production server:

$ bin/rake staging:assets:precompile
$ REACT_ON_RAILS_ENV= rails s -b 0.0.0.0

Cleanup

To cleanup installed modules:

bin/kitten cleanup

Style checker

$ yarn stylelint

Ruby specs

$ bundle exec rake

SassDoc

We use SassDoc to generate documentation from our components comments.

Generate the documentation:

$ bundle exec rake sassdoc
# OR
$ yarn sassdoc

The documentation is accessible on development environment: /kitten/sassdoc.

Component testing

To launch the JS tests:

$ bin/kitten test

# OR

$ bin/kitten test {PATH}/{FILE}.test.js

Check out the guidelines to know how to test kitten.

Contributing

To contribute code:

• Create a pull request on GitHub with a clear title in English.

• Tag it with the right labels: Needs reviews, Needs testing or Work in progress.

• Don't forget to update the CHANGELOG.md under the [unreleased] section with the following syntax:

  - Breaking change: a breaking change.
  - Feature: a new feature.
  - Fix: a fix.
  

• Update the KARL_CHANGELOG.md under the [unreleased] section if you added some updates to the styleguide.

To merge code into master:

• Make sure the code has been reviewed by someone.
• Make sure it has been tested.
• Merge using Squash and merge on GitHub.
• Delete the branch.

Static Dump

To build an on disk static file mirror:

$ bin/kitten buildstatic

• files are located in build/

Release

Login

If this is your first release, start by saving your npm credentials in your ~/.npmrc by calling:

$ yarn login

Prepare the release

• Pull master
• Update the CHANGELOG.md file:
  • Update the version following the Semantic Versioning.
  • Add a new [unreleased] section.
  • Check that each merged PR from the last release has an entry.
• Update the KARL_CHANGELOG.md file:
  • Update the version with the version of the library.
  • Add a new [unreleased] section.
• Update the version in lib/kitten/version.rb.
• Update the version in package.json.

Release!

Run this command:

$ bundle exec rake kitten_release

Update GitHub

Only for KissKissBankBank collaborators

Update our private project kanban: move cards that are released from done column to released column.