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react-lezer-highlighter
Advanced tools
A simple tiny syntax highlighter for React using Lezer parsers.
Background, motivation, and design of this library is covered in this blog post.
npm i react-lezer-highlighter
import React from "react";
import { createRoot } from "react-dom/client";
import { Code, Parsers } from "react-lezer-highlighter";
import { parser as javascriptParser } from "@lezer/javascript";
import { parser as jsonParser } from "@lezer/json";
import "react-lezer-highlighter/styles/default.css";
const parsers = {
js: javascriptParser,
jsx: javascriptParser.configure({ dialects: "jsx" }),
ts: javascriptParser.configure({ dialects: "ts" }),
tsx: javascriptParser.configure({ dialects: "ts jsx" }),
json: jsonParser,
// ... import and add more languages as you see fit
};
const source = `function norm(a: number, b: number): number {
return Math.sqrt(Math.pow(a, 2) + Math.pow(b, 2))
}`;
const root = createRoot(document.getElementById("root"));
root.render(
<Parsers.Provider value={parsers}>
<Code language="ts" source={source} />
</Parsers.Provider>,
);
import type React from "react";
import type { LRParser } from "@lezer/lr";
declare const Parsers: React.Context<Record<string, LRParser>>;
declare interface CodeProps {
source: string;
language?: string;
className?: string | ((language?: string) => string);
}
declare const Code: React.FC<CodeProps>;
react-lezer-highlighter is meant to be a proof-of-concept reference implementation - after all, it's only 30 lines of code. I'll publish new versions to track with Lezer, and would accept PRs for additional stylesheets in styles/
if people want to create them, but it's unlikely that I want to add new features or change the basic interface.
MIT (c) 2024 Joel Gustafson
FAQs
A tiny syntax highlighter for React using Lezer parsers
The npm package react-lezer-highlighter receives a total of 15,051 weekly downloads. As such, react-lezer-highlighter popularity was classified as popular.
We found that react-lezer-highlighter demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 0 open source maintainers collaborating on the project.
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