@prosemark/paste-rich-text

CodeMirror 6 extensions for pasting clipboard HTML as Markdown and for paste without formatting.

Published on npm: @prosemark/paste-rich-text.

What it provides

• pasteRichTextExtension — Intercepts paste when the clipboard has text/html, converts HTML to Markdown with Turndown, and inserts the result. Skips conversion when the selection is inside a fenced code block.
• pastePlainTextExtension — Mod-Shift-V reads plain text from the clipboard and inserts it (bypasses rich paste).

Both accept an optional callback after insert (for example to run spellcheck or sync document state).

Install

bun add @prosemark/paste-rich-text

Usage

import {
  pasteRichTextExtension,
  pastePlainTextExtension,
} from '@prosemark/paste-rich-text';

const extensions = [pasteRichTextExtension(), pastePlainTextExtension()];

With callbacks (as in the demo app and VS Code webview):

pasteRichTextExtension((event, view, from, to) => {
  // e.g. refresh decorations after paste
});

pastePlainTextExtension((view, from, to) => {
  // same
});

Dependencies

• @codemirror/view, @codemirror/state, @codemirror/language (fenced-code detection)
• turndown

Related docs

• Features — paste-rich-text