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import hljs, { HLJSOptions, LanguageFn } from "../deps/highlight.ts";import { merge } from "../core/utils/object.ts";import { log } from "../core/utils/log.ts";
import type Site from "../core/site.ts";import type { Page } from "../core/file.ts";
export interface Options {  /** The list of extensions this plugin applies to */  extensions?: string[];
  /** Register languages on the Highlight.js context. */  languages?: Record<string, LanguageFn>;
  /**   * Options passed to highlight.js.   * @see https://highlightjs.readthedocs.io/en/latest/api.html#configure   */  options?: Omit<HLJSOptions, "__emitter">;}
// Default optionsexport const defaults: Options = {  extensions: [".html"],  options: {    ignoreUnescapedHTML: false,    noHighlightRe: /^$/i,    languageDetectRe: /\blanguage-([\w-]+)\b/i,    classPrefix: "hljs-",    cssSelector: "pre code",    languages: undefined,  },};
/** A plugin to syntax-highlight code using the highlight.js library */export default function (userOptions?: Options) {  const options = merge(defaults, userOptions);  hljs.configure(options.options);
  if (options.languages) {    for (const [name, fn] of Object.entries(options.languages)) {      hljs.registerLanguage(name, fn);    }  }
  return (site: Site) => {    site.process(options.extensions, processCodeHighlight);
    function processCodeHighlight(pages: Page[]) {      for (const page of pages) {        page.document!.querySelectorAll<HTMLElement>(          options.options.cssSelector,        )          .forEach((element) => {            try {              hljs.highlightElement(element);              element.removeAttribute("data-highlighted");            } catch (error) {              log.error(                `Error highlighting code block in ${page.sourcePath}: ${error}`,              );            }          });      }    }  };}