@cartamd/plugin-code/dist/index.js

This plugin adds support for code blocks **syntax highlighting**. It uses the same highlighter from the core package(Shiki).

import rehypeShikiFromHighlighter from '@shikijs/rehype/core';
/**
 * Carta code highlighting plugin. Themes available on [GitHub](https://github.com/speed-highlight/core/tree/main/dist/themes).
 */
export const code = (options) => {
    return {
        transformers: [
            {
                execution: 'async',
                type: 'rehype',
                async transform({ processor, carta }) {
                    let theme = options?.theme;
                    const highlighter = await carta.highlighter();
                    if (highlighter) {
                        const shikiHighlighter = highlighter.shikiHighlighter();
                        if (!theme) {
                            theme = highlighter.settings.themeHash; // Use the theme specified in the highlighter
                        }
                        if (highlighter.utils.isSingleTheme(theme)) {
                            processor.use(rehypeShikiFromHighlighter, shikiHighlighter, { ...options, theme });
                        }
                        else {
                            processor.use(rehypeShikiFromHighlighter, shikiHighlighter, {
                                ...options,
                                themes: theme
                            });
                        }
                    }
                }
            }
        ]
    };
};
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