Custom theme from JSON

Use a theme JSON file produced by the Neovim colorscheme generation recipe, or your own theme definition. Keep its source license and notices with it.

import theme from './my_theme.json' with { type: 'json' };
import { highlight } from '@lumis-sh/lumis';
import { htmlInline } from '@lumis-sh/lumis/formatters';
import javascript from '@lumis-sh/wasm-javascript';

const html = await highlight(
  'const x = 1',
  htmlInline({ language: javascript, theme }),
);

Use Node.js JSON modules or a bundler with JSON import support. Install @lumis-sh/lumis and @lumis-sh/wasm-javascript for this example.