.eleventy.js

const yaml = require("js-yaml");
const { DateTime } = require("luxon");
const syntaxHighlight = require("@11ty/eleventy-plugin-syntaxhighlight");
const htmlmin = require("html-minifier");

module.exports = function (eleventyConfig) {
  // Disable automatic use of your .gitignore
  eleventyConfig.setUseGitIgnore(false);

  // Merge data instead of overriding
  eleventyConfig.setDataDeepMerge(true);
  const md = require('markdown-it')({
        html: false,
        breaks: true,
        linkify: true
  });

  eleventyConfig.addNunjucksFilter("markdownify", markdownString => md.render(markdownString));

  eleventyConfig.addCollection("exhibitsOrdered", function(collectionApi) {
	  
    return collectionApi.getFilteredByGlob("src/exhibits/*.md").sort(function(a, b) {
      if (a.data.title < b.data.title) return -1;
      else if (a.data.title > b.data.title) return 1;
      else return 0;
    });
  });

  // human readable date
  eleventyConfig.addFilter("readableDate", (dateObj) => {
    return DateTime.fromJSDate(dateObj, { zone: "utc" }).toFormat(
      "dd LLL yyyy"
    );
  });

  // Syntax Highlighting for Code blocks
  eleventyConfig.addPlugin(syntaxHighlight);

  // To Support .yaml Extension in _data
  // You may remove this if you can use JSON
  eleventyConfig.addDataExtension("yaml", (contents) =>
    yaml.safeLoad(contents)
  );

  // Copy Static Files to /_Site
  eleventyConfig.addPassthroughCopy({
    "./src/admin/config.yml": "./admin/config.yml",
    "./node_modules/alpinejs/dist/alpine.js": "./static/js/alpine.js",
    "./src/static/css/about.css": "./static/css/about.css",
    "./src/static/css/landing-page.css": "./static/css/landing-page.css",
    "./src/static/css/commentbox.css": "./static/css/commentbox.css",
  });

  // Copy Image Folder to /_site
  eleventyConfig.addPassthroughCopy("./src/static/img");
  eleventyConfig.addPassthroughCopy("./src/static/js");
  eleventyConfig.addPassthroughCopy("./src/static/fonts");

  // Copy favicon to route of /_site
  eleventyConfig.addPassthroughCopy("./src/favicon.ico");

  // Minify HTML
  eleventyConfig.addTransform("htmlmin", function (content, outputPath) {
    // Eleventy 1.0+: use this.inputPath and this.outputPath instead
    if (outputPath.endsWith(".html")) {
      let minified = htmlmin.minify(content, {
        useShortDoctype: true,
        removeComments: true,
        collapseWhitespace: true
      });
      return minified;
    }

    return content;
  });

  // Let Eleventy transform HTML files as nunjucks
  // So that we can use .html instead of .njk
  return {
    dir: {
      input: "src",
    },
    htmlTemplateEngine: "njk",
  };

};