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koine

a common ui component library

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Koine

a common ui component library

Overview

Koine is my personal component library, while it's small, it's designed to be extensible and reusable across multiple application. This component lib is set up to use styled-components, polished, and styled-components-modifiers 💅.

Installation

This package is available on npm as koine, and you can find it here.

To install the latest stable version with yarn:

$ yarn add koine

...or with npm:

$ npm install koine

Up & Running

To install dependencies with Yarn, run:

$ yarn

or to install with npm, run:

$ npm install

File Structure

This component library borrows its structure from BEM and is set up to use Blocks, Elements, and Modifiers. Below is a description of each.

Blocks

Blocks are the highest level of abstraction in the Blocks, Elements, Modifiers concept. They are responsible for providing the context for Elements, handling UI logic, and rendering the Elements within the Block. They are not connected to application state, nor do they handle any business logic.

Elements

Elements are the smallest, indivisible parts of UI. They are responsible for actually rendering the UI. They do not handle application logic or UI logic, but they do handle their own modifiers which modify the element’s style. Elements generally exist within the context of a Block (as their own file in the Block’s directory) allowing the reuse of that set of Elements, but they are not exclusively bound to blocks. An example of a stand-alone Element would be an A, Link, H3, or P. These common elements live in lib/elements.

Modifiers

This library utilizes styled-components-modifiers to build modifiers. Modifiers are small functions that allow us to alter the properties of an Element. They primarily live in the Element's file and are solely responsible for modifying styles. Some modifiers are common to multiple Elements. An example would be fontWeights. These common modifiers live in lib/modifiers

An Example Structure

├ lib/
├── blocks/
|   ├── Card
|   |   ├── Body.js     // <- Element
|   |   ├── Footer.js   // <- Element
|   |   ├── Header.js   // <- Element
|   |   └── index.js    // <- Block
|   └── index.js        // <- export for all Blocks
├── elements/
|   ├── A
|   |   ├── __tests__
|   |   |   ├── __snapshots__
|   |   |   |   └── index.js.snap   // <- Snapshot Test
|   |   |   └── index.js            // <- Test
|   |   └── index.js                // <- Element
|   ├── Link
|   |   └── index.js                // <- Element
|   ├── H3
|   |   └── index.js                // <- Element
|   ├── P
|   |   └── index.js                // <- Element
|   └── etc.
|   └── index.js                    // <- export for all Blocks
├── modifiers/
|   ├── fontWeights
|   └── etc.
└── index.js                        // <- main export for the library

Local Development

Module Development Workflow

Helpful information on development workflow in this library lives here.

Linting

NOTE: The linter will run against everything in the lib directory.

JavaScript Linting

This assumes you have eslint and eslint-watch installed. If you don't, run the following:

$ npm i -g eslint eslint-watch

or if you need permissions:

$ sudo npm i -g eslint eslint-watch

To run the linter once:

$ yarn lint:js

To run the watch task:

$ yarn lint:js:watch
Style Linting

I've also added a style linter for Sass / SCSS.

To run the style linter:

$ yarn lint:style
Linting JavaScript & Styles

To run both linters:

$ yarn lint

Testing

An initial test suite has been setup with two tests (one passing and one intentionally failing). We're using Jest Snapshots for our initial test setup, though Enzym and Expect are also available. The basic test setup lives in ./__tests__. The main configuration for Jest lives at the bottom of package.json. I've also added a few handy scripts, which I've listed below. Jest also gives us a test coverage tool for free, so I've added that too. The setup is at the bottom of package.json. Everything is set to 90% coverage, but your welcome to update that to whatever you'd like.

To run the tests once:

$ npm test

To run the watch script (for only relevant test files)

$ npm run test:watch

To run the watch script (for all test files)

$ npm run test:watchAll

To view the coverage report:

$ npm run test:coverage:report

Review

If you'd like to run the linters and tests at once (this is a nice check before pushing to Github or deploys), you can run:

$ npm run review

Build

NOTE: When you run build, Babel will create a build directory. This is what your users will interact with when they use your library. Nothing in lib gets shipped with your published module.

Run once:

$ npm run build

Run the watch script:

$ npm run build:watch

NOTE: the build script runs in the prepublish script just before you publish to npm.

Contributing

I am thankful for any contributions made by the community. By contributing you agree to abide by the Code of Conduct in the Contributing Guidelines.

License

MIT

FAQs

Package last updated on 28 Jan 2018

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