.eleventy.js

module.exports = function (eleventyConfig) {
    eleventyConfig.addPassthroughCopy("images");
    eleventyConfig.addPassthroughCopy("admin");
    eleventyConfig.addPassthroughCopy("CSS");
    eleventyConfig.addPassthroughCopy("Javascript");
    eleventyConfig.addWatchTarget("images");
    eleventyConfig.addWatchTarget("admin");
    eleventyConfig.addWatchTarget("CSS");
    eleventyConfig.addWatchTarget("Javascript");

    // plugin to add target and rel to a tags
//     let markdownIt = require("markdown-it");
//     let markdownItOptions = {
//         html: true
//     };
//     let mila = require("markdown-it-link-attributes");
//     let milaOptions = {
//         attrs: {
//             target: "_blank",
//             rel: "noopener noreferrer"
//         }
//     };
//     let markdownLib = markdownIt(markdownItOptions).use(mila, milaOptions);
//     eleventyConfig.setLibrary("md", markdownLib);

    // lazy image optimization
//     const lazy_loading = require('markdown-it-image-lazy-loading');
//     let lazyLoad = markdownIt(markdownItOptions).use(lazy_loading);
//     eleventyConfig.setLibrary("md", lazyLoad)
        let markdownIt = require("markdown-it");
        let markdownItOptions = {
            html: true
        };
        const markdownItPlugins = ["markdown-it-image-lazy-loading", "markdown-it-link-attributes"];
        const markdownLibrary = markdownItPlugins.reduce(
        (m, plugin) => m.use(require(plugin)),
        markdownIt(markdownItOptions)
    );
       eleventyConfig.setLibrary("md", markdownLibrary)
}

package.json

{
  "name": "WEBDRIP-BLOG",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "start": "eleventy --serve",
    "build": "eleventy"
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "dependencies": {
    "@11ty/eleventy": "^0.12.1",
    "markdown-it-for-inline": "^0.1.1",
    "markdown-it-image-lazy-loading": "^1.1.0",
    "markdown-it-link-attributes": "^3.0.0"
  }
}