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import * as eta from "../deps/eta.js";
import TemplateEngine from "./templateEngine.js";
export default class Eta extends TemplateEngine {  filters = {};
  constructor(site, options = {}) {    super(site, options);
    eta.configure({      views: this.includes,      useWith: true,    });  }
  //Update cache  update(filenames) {    for (const filename of filenames) {      eta.templates.remove(filename);    }  }
  async render(content, data, filename) {    if (!eta.templates.get(filename)) {      eta.templates.define(filename, eta.compile(content));    }    data.filters = this.filters;    const fn = eta.templates.get(filename);    return await fn(data, eta.config);  }
  addFilter(name, fn) {    this.filters[name] = fn;  }}