iro

Fast and clean terminal coloring and styling utility for Deno and Node.js.

Overview

  • No dependencies
  • Clean and easy syntax
  • No polyfilling
  • Lightweight
  • Import only what you need

Usage

Deno

// hello.ts
import iro, { bold, red } from 'https://cdn.jsdelivr.net/npm/node-iro@1.0.1/src/iro.ts';

console.log(iro('Hello, World!', bold, red));

Node.js

Install using npm:

npm i node-iro

…or Yarn:

yarn add node-iro

Use it:

// hello.js
const iro = require('node-iro').default;
const { bold, red } = require('node-iro');

console.log(iro('Hello, World!', bold, red));

Example

Advanced Usage

Nesting

// example taken from https://github.com/lukeed/kleur#nested-methods :)
console.log(iro(`foo ${iro('red', red, bold)} bar ${iro('cyan', cyan)} baz`, yellow));
console.log(iro('foo ' + iro('red', red, bold) + ' bar ' + iro('cyan', cyan) + ' baz', yellow));

Example

Supported Formatting

Modifiers: reset, bold, dim, italic, underline, inverse, hidden, strikethrough
Colors: black, red, green, yellow, blue, magenta, cyan, white, gray, grey
Background colors: bgBlack, bgRed, bgGreen, bgYellow, bgBlue, bgMagenta, bgCyan, bgWhite

Note: italic and strikethrough are not widely supported.

Credits

This project is heavily inspired by kleur. It was mainly made to be used in Deno, but I’ve decided to release it for Node.js users too. The syntax is different for two reasons: personal preference and lean typings. If you use Node.js and prefer kleur’s syntax, you should definitely choose kleur over iro, it’s an awesome library 😊

Planned Features

  • Check if terminal supports coloring
  • Explicitly provide whether the coloring should happen
  • Unit tests

License

MIT.