Math Plugin

Insert via Insert → Math or Mod-Shift-m. Expressions use a TeX subset; the editor renders MathML (no KaTeX).

Demo

Install and CSS: see Editor API — Getting Started.

js

import { Editor, MathPlugin } from 'on-codemerge';
import 'on-codemerge/index.css';
import 'on-codemerge/public.css';

const editor = new Editor(container, {
  plugins: [MathPlugin()],
});

Editor

Templates — starter formulas (quadratic, sum, integral, …)
Build — structure / ops / greek palette with caret holes (\frac{}{})
Source — raw TeX-subset textarea
Live MathML preview (debounced)
Right-click formula: edit / align / delete; click to resize

Notes

Engine: internal tokenize → AST → MathML (browser layout)
Document field: math atom attrs { expression, align, width, height }
Supported subset: fractions, roots, scripts, sums/integrals, greek, common ops — not full LaTeX
HTML export embeds MathML inside data-node="math" for published pages