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import loader from "../core/loaders/module.ts";import { merge } from "../core/utils.ts";
import type { Data, Engine, Helper, Site } from "../core.ts";
export interface Options {  /** The list of extensions used to load files */  extensions: string[] | {    pages: string[];    data: string[];    components: string[];  };}
// Default optionsexport const defaults: Options = {  extensions: {    pages: [".tmpl.js", ".tmpl.ts"],    data: [".js", ".ts"],    components: [".js", ".ts"],  },};
/** Template engine to render js/ts files */export class ModuleEngine implements Engine {  helpers: Record<string, Helper> = {};
  deleteCache() {}
  async render(content: unknown, data: Data): Promise<unknown> {    return typeof content === "function"      ? await content(data, this.helpers)      : content;  }
  renderSync(content: unknown, data: Data): string {    return typeof content === "function"      ? content(data, this.helpers)      : content;  }
  addHelper(name: string, fn: Helper) {    this.helpers[name] = fn;  }}
/** Register the plugin to load JavaScript/TypeScript modules */export default function (userOptions?: Partial<Options>) {  const options = merge(defaults, userOptions);
  const extensions = Array.isArray(options.extensions)    ? {      pages: options.extensions,      data: options.extensions,      components: options.extensions,    }    : options.extensions;
  return (site: Site) => {    const engine = new ModuleEngine();
    site.loadData(extensions.data, loader);    site.loadPages(extensions.pages, loader, engine);    site.loadComponents(extensions.components, loader, engine);  };}