Clomp is a class name composer for React that allows you to use CSS utility frameworks in a more readable way. You can use it with any class names, but it was designed specifically with Tailwind CSS in mind.

Example

This example illustrates how much more readable an element with a lot of utility classes can be. To see examples in code, see the Jest tests in src/constructClomp.spec.js while we work on making more useful examples.

import React from "react";

// Without Clomp

const NavItem = (props) => (
  <a className="h-full text-gray-500 p-8 hover:text-gray-900 sm:p-4 sm:hover:border-8 sm:hover:background-red-500 sm:hover:animate-ping">
    {props.children}
  </a>
);

// With Clomp

import { clomp } from "clomp";

const NavItem = clomp.a`
  h-full
  text-gray-500
  p-8

  hover:
    text-gray-900

  sm:
    p-4

    hover:
      border-8
      background-red-500
      animate-ping
`;

// Using the component

function Nav(props) {
  return (
    <nav>
      <NavItem href="/">Home</NavItem>
      <NavItem href="/contact">Contact</NavItem>
      <NavItem href="/about">About</NavItem>
    </nav>
  );
}

Installation

To use Clomp, install it using the Node Package Manager.

npm install --save clomp

Usage

You can use Clomp similarly to styled-components. In the below example, we'll use a few of Tailwind CSS's utility classes to make a navigation item listing.

Basic Usage

import React from "react";
import { clomp } from "clomp";

const NavItem = clomp.a`
  h-full
  text-gray-500
  p-8

  hover:
    text-gray-900

  sm:
    p-4

    hover:
      border-8
      background-red-500
      animate-ping
`;

function Nav(props) {
  return (
    <nav>
      <NavItem href="/">Home</NavItem>
      <NavItem href="/contact">Contact</NavItem>
      <NavItem href="/about">About</NavItem>
    </nav>
  );
}

Props-Dependent Usage

Any escaped expressions in the template string are assumed to be functions, and are passed any provided props.

const NavItem = clomp.a`
  h-full
  text-gray-500
  p-8

  hover:
    text-gray-900

  sm:
    p-4

    hover:
      border-8
      background-red-500
      animate-ping

  ${({ selected }) =>
    selected
      ? `
    text-blue-500
  `
      : `
    text-gray-500
  `}
`;

function Nav(props) {
  return (
    <nav>
      <NavItem selected href="/">
        Home
      </NavItem>
      <NavItem href="/contact">Contact</NavItem>
      <NavItem href="/about">About</NavItem>
    </nav>
  );
}

Usage with Existing Components

You can use existing components with Clomp, much like you can with styled-components.

import NavItem from "./nav-item";

function Nav(props) {
  return (
    <nav>
      <NavItem selected href="/">
        Home
      </NavItem>
      <NavItem href="/contact">Contact</NavItem>
      <NavItem href="/about">About</NavItem>
    </nav>
  );
}

const StyledNav = clomp(Nav)`
  flex
  flex-col
  
  sm:
    flex-row
`;