.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);

  // Make a string uppercase
  eleventyConfig.addFilter("makeUppercase", function(value) { 
    return String(value).toUpperCase();
  })

  // Get the N elements of a collection
  eleventyConfig.addFilter("limit", function(array, limit) {
    return array.slice(0, limit);
  });

  eleventyConfig.addFilter("split", function(str, split) {
    return str.substr(0, split);
  });

  // Display the date in a readable format
  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",
  });

  // Copy Static Files to /_Site
  eleventyConfig.addPassthroughCopy("./src/static");


  // 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",
  };
};