React component for code syntax highlighting. Preview 📕

Why another code syntax highlighting package?

• A simple to use React component.
• It is very lightweight, only ships a small React component, which loads tokenization script (~35Kb) in a Web Worker on demand, on first usage.
• The Prism.js tokenization script is loaded from the CDN asynchronously.
• Runs tokenization in a Web Worker, so it doesn't block the main thread.
• Emits Prism.js compatible HTML, so you can use any Prism.js themes.
• No layout shifts before the code is highlighted. While the code is being highlighted in the Web Worker, the component renders plain text with the correct dimensions.
• If code changes while it is being highlighted, the component will cancel the previous highlighting and start a new one.
• Interactive CSS on mouse hover.

npm install code-colors-react

import { ColorTokens } from "code-colors-react";
<pre>
 <ColorTokens code={"console.log('hello world');"} lang={"js"} />
</pre>;

• code — The code to highlight.
• lang — The language of the code. If omitted, it will try to autodetect the language.
• as — The root element to render. Defaults to "code".

To style the highlighted code, you can use any of the pre-defined themes from Prism.

You can do it in JavaScript like so:

import { loadCss } from "thingies/lib/loadCss";
const theme = "github";
const url = `https://cdn.jsdelivr.net/npm/prism-themes@1.9.0/themes/${theme}.min.css`;
loadCss(url);

Basic JavaScript:

image

Negative values with red background:

image

Nested languages: JavaScript and CSS inside HTML:

image

See more examples.