Witch of Git - web/blog/blob - .eleventy.js

   1 const pluginRss = require("@11ty/eleventy-plugin-rss");
   2 const pluginSyntaxHighlight = require("@11ty/eleventy-plugin-syntaxhighlight");
   3 const Nunjucks = require("nunjucks");
   4 const dateFilter = require("nunjucks-date-filter");
   5 const md = require("markdown-it")();
   6 const CleanCSS = require("clean-css");
   7 const htmlMinifier = require("html-minifier");
   8 const util = require("util");
   9
  10 module.exports = (eleventyConfig) => {
  11     eleventyConfig.addNunjucksFilter('date', dateFilter);
  12     eleventyConfig.addPlugin(pluginRss);
  13     eleventyConfig.addPlugin(pluginSyntaxHighlight);
  14
  15     eleventyConfig.addTransform("html-minifier", htmlMinifierTransform);
  16
  17     eleventyConfig.addPassthroughCopy("img");
  18     eleventyConfig.addPassthroughCopy("static");
  19     eleventyConfig.addPassthroughCopy("stamps");
  20
  21     eleventyConfig.addNunjucksShortcode("youtube", youtubeShortcode);
  22     eleventyConfig.addPairedNunjucksShortcode("tweet", tweetShortcode);
  23     eleventyConfig.addPairedShortcode("aside", asideShortcode);
  24     eleventyConfig.addPairedShortcode("figure", figureShortcode);
  25
  26     eleventyConfig.addFilter("markdown", value => md.renderInline(value));
  27     eleventyConfig.addFilter("groupby", groupbyFilter);
  28     eleventyConfig.addFilter("cssmin", css =>
  29         new CleanCSS({}).minify(css).styles);
  30     eleventyConfig.addFilter("debug", util.inspect);
  31
  32     eleventyConfig.setDataDeepMerge(true);
  33
  34     eleventyConfig.addCollection("years", collection => {
  35         const posts = collection.getFilteredByTag("posts");
  36         const items = groupby(posts, item => item.date.getFullYear());
  37         return items.reduce((obj, [k, v]) => (obj[k] = v, obj), {});
  38     });
  39
  40     return {
  41         markdownTemplateEngine: "njk",
  42     };
  43 };
  44
  45 function access(item, path) {
  46     const segments = path.split(".");
  47     for (const seg of segments) {
  48         if (item === undefined) { return null; }
  49         if (seg.endsWith("()")) {
  50             const method = item[seg.slice(0, -2)];
  51             if (method === undefined) { return null; }
  52             item = method.bind(item)();
  53         } else {
  54             item = item[seg];
  55         }
  56     }
  57     return item;
  58 }
  59
  60 function groupby(items, keyFn) {
  61     const results = [];
  62     for (const item of items) {
  63         const key = keyFn(item);
  64         if (results.length == 0 || key != results[results.length-1][0]) {
  65             results.push([key, [item]]);
  66         } else {
  67             results[results.length-1][1].push(item);
  68         }
  69     }
  70     return results;
  71 }
  72
  73 function groupbyFilter(items, path) {
  74     return groupby(items, item => access(item, path));
  75 }
  76
  77 function youtubeShortcode(items, inWidth = 560, inHeight = 315) {
  78     const width = items.width || inWidth;
  79     const height = items.height || inHeight;
  80     const allow = items.allow || "accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture"
  81     const border = items.border || "0";
  82     const video = items.video || items;
  83     if (!video) {
  84         throw "Required argument 'video'.";
  85     }
  86     const src = "https://www.youtube.com/embed/" + video;
  87     return `<div class="youtube row hcenter">
  88  <iframe width="${width}" height="${height}" src="${src}"
  89   frameborder="${border}" allow="${allow}" allowfullscreen></iframe>
  90 </div>`;
  91 }
  92
  93 function tweetShortcode(content, items) {
  94     // @TODO: Handle parsing date
  95     return `<div class="row hcenter">
  96  <blockquote class="twitter-tweet">
  97   <p lang="en" dir="ltr">${content}</p> &mdash; ${items.name} (@${items.at})
  98   <a href="${items.link}">${items.date}</a>
  99  </blockquote>
 100  <script async src="https://platform.twitter.com/widgets.js" charset="utf-8">
 101  </script>
 102 </div>`;
 103 }
 104
 105 function asideShortcode(content, style='') {
 106     const html = md.render(content);
 107     if (style) {
 108         return `<aside class="${style}">${html}</aside>`;
 109     } else {
 110         return `<aside>${html}</aside>`;
 111     }
 112 }
 113
 114 function figureShortcode(content, { src, alt }) {
 115     const captionHtml = md.render(content);
 116     return `<figure class="col hcenter">
 117   <img src="${src}" alt="${alt}">
 118   <figcaption>${captionHtml}</figcaption>
 119 </figure>`;
 120 }
 121
 122 function htmlMinifierTransform(content, outputPath) {
 123     if (outputPath.endsWith(".html")) {
 124         return htmlMinifier.minify(content, {
 125             useShortDoctype: true,
 126             removeComments: true,
 127             collapseWhitespace: true,
 128         });
 129     }
 130     return content;
 131 }