@git-diff-view/lowlight eagerly imports all highlight.js languages, adding ~870 KB to the bundle

[wozaxi]

Thanks for this great library!

Problem

@git-diff-view/lowlight calls createLowlight(all) at module scope (https://github.com/MrWangJustToDo/git-diff-view/blob/main/packages/lowlight/src/index.ts):

import { createLowlight, all } from "lowlight";
const lowlight = createLowlight(all);

Because @git-diff-view/core re-exports everything via export * from '@git-diff-view/lowlight', any import from @git-diff-view/react (or /vue, /solid, etc.) causes all 130+ highlight.js language grammars to be bundled — even if the consumer only needs one or two languages or provides their own highlighter via registerHighlighter.

This adds ~870 KB (minified) to the vendor bundle, which cannot be tree-shaken.

Expected behavior

Consumers who provide their own DiffHighlighter via the registerHighlighter prop should not incur the cost of bundling all highlight.js languages.

[voglster]

This one seemed pretty simple, so i thought id give it a try..