DoubleDown

Super Lightweight Markdown-Style Parser

Overview

DoubleDown is a Markdown-inspired text parser primarily intended for sites with comment sections that might benefit from simple styling (e.g. Reddit). It uses a syntax similar to Markdown but with a much more restricted feature set, slight syntax modifications, and built-in HTML escaping to facilitate faster, simpler, and safer parsing.

Installation

npm install doubledown

Usage

import doubledown from 'doubledown';
 
const formatted_text = doubledown('Hello, **World!**'); // Hello, <strong>World!</strong>

Syntax

Apart from links, all features are triggered by surrounding text with a set of markers. As the double in DoubleDown implies, all markers are made up of sets of two characters. For instance, the bold marker is ** and can be used like so: **This text is bold.**

Feature	Input	Output
Link	[Click Here](https://google.com)	<a rel="nofollow noreferrer noopener" target="_blank" href="https://google.com">Click Here</a>
Code	##var foo = 123;##	<code>var foo = 123;</code>
Keyboard Shortcut	$$Ctrl + S$$	<kbd>Ctrl + S</kbd>
Quote	@@This text is a quote@@	<blockquote>This text is a quote</blockquote>
Bold	**This text is bold**	<strong>This text is bold</strong>
Italic	//This text is italicized//	<em>This text is italicized</em>
Underline	__This text is underlined__	<u>This text is underlined</u>
Strikethrough	~~This text is struck through~~	<s>This text is struck through</s>
Subscript	%%This text is a subscript%%	<sub>This text is a subscript</sub>
Superscript	^^This text is a superscript^^	<sup>This text is a superscript</sup>