Revise.js – Building blocks for contenteditable-based text editors

What it does

Introducing Revise.js, a foundational library for building contenteditable-based web text editors, with a web component that reads the DOM as a string, an algebraic edit data structure, and a declarative component model.

Imagine it’s the late 2010s and you’re a human programmer working for a small startup. One day, an ambitious product manager comes to you with a feature request: See this input or textarea? Can we make it so that when the user types in a URL, it turns into a link automatically? Or can we let users @-mention each other, and have that highlighted? Or can we mark text over a certain character limit with a red background? To the product manager, these may sound like natural extensions to the behavior of inputs and textareas. To you, the developer, it reads as ignorance. Sure, you could overlay a div on top of the form to style the text, but this is fragile and hacky. You could use rich-text…from revise.js.org

In the maker’s words, at launch

Hi HN. I've been working on this since 2018. Revise.js is a set of building blocks for contenteditable: a <content-area> web component that gives you a textarea-like .value for any contenteditable element, an Edit data structure with compose&#x2F;transform&#x2F;invert for OT inspired by the Xi editor, and a Crank.js…

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