43 lines
1 KiB
TypeScript
43 lines
1 KiB
TypeScript
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import Prism from 'prismjs';
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import loadLanguages from 'prismjs/components/index.js';
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import { addAstro } from './plugin.js';
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const languageMap = new Map([['ts', 'typescript']]);
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export function runHighlighterWithAstro(lang: string | undefined, code: string) {
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let classLanguage = `language-${lang}`;
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if (!lang) {
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lang = 'plaintext';
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}
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const ensureLoaded = (language: string) => {
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if (language && !Prism.languages[language]) {
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loadLanguages([language]);
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}
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};
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if (languageMap.has(lang)) {
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ensureLoaded(languageMap.get(lang)!);
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} else if (lang === 'astro') {
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ensureLoaded('typescript');
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addAstro(Prism);
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} else {
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ensureLoaded('markup-templating'); // Prism expects this to exist for a number of other langs
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ensureLoaded(lang);
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}
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if (lang && !Prism.languages[lang]) {
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// eslint-disable-next-line no-console
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console.warn(`Unable to load the language: ${lang}`);
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}
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const grammar = Prism.languages[lang];
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let html = code;
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if (grammar) {
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html = Prism.highlight(code, grammar, lang);
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}
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return { classLanguage, html };
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}
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