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

   1 import pluginRss from "@11ty/eleventy-plugin-rss";
   2 import pluginSyntaxHighlight from "@11ty/eleventy-plugin-syntaxhighlight";
   3 import uslug from "uslug";
   4 import anchor from "markdown-it-anchor";
   5 import markdownIt from "markdown-it";
   6 import CleanCSS from "clean-css";
   7 import htmlMinifier from "html-minifier-terser";
   8 import util from "util";
   9 import { DateTime } from "luxon";
  10
  11 const md = markdownIt({
  12     html: true,
  13     typographer: true,
  14 }).use(anchor, {
  15     slugify: s => uslug(s),
  16     permalink: true,
  17     permalinkBefore: true,
  18     permalinkClass: "header-anchor c-sun dec-none",
  19 });
  20
  21 export default async function (eleventyConfig) {
  22     eleventyConfig.addDateParsing(parseDate);
  23     // @TODO: Update to the new virtual template setup?
  24     eleventyConfig.addPlugin(pluginRss);
  25     eleventyConfig.addPlugin(pluginSyntaxHighlight);
  26
  27     eleventyConfig.setLibrary("md", md);
  28
  29     eleventyConfig.addTransform("html-minifier", htmlMinifierTransform);
  30
  31     eleventyConfig.addPassthroughCopy("img");
  32     eleventyConfig.addPassthroughCopy("static");
  33     eleventyConfig.addPassthroughCopy("stamps");
  34     eleventyConfig.addPassthroughCopy({ "favicon": "/" });
  35
  36     eleventyConfig.addNunjucksShortcode("youtube", youtubeShortcode);
  37     eleventyConfig.addPairedNunjucksShortcode("tweet", tweetShortcode);
  38     eleventyConfig.addPairedShortcode("aside", asideShortcode);
  39     eleventyConfig.addPairedShortcode("figure", figureShortcode);
  40
  41     eleventyConfig.addFilter("date", dateFilter);
  42     eleventyConfig.addFilter("markdown", value => md.renderInline(value));
  43     eleventyConfig.addFilter("groupby", groupbyFilter);
  44     eleventyConfig.addFilter("cssmin", css =>
  45         new CleanCSS({}).minify(css).styles);
  46     eleventyConfig.addFilter("debug", util.inspect);
  47     eleventyConfig.addFilter("toRfc3339", toRfc3339Filter);
  48     eleventyConfig.addFilter("hasTime", hasTimeFilter);
  49
  50     eleventyConfig.setDataDeepMerge(true);
  51
  52     eleventyConfig.addCollection("years", collection => {
  53         const posts = collection.getFilteredByTag("posts");
  54         const items = groupby(posts, item => item.date.getFullYear());
  55         return items.reduce((obj, [k, v]) => (obj[k] = v, obj), {});
  56     });
  57
  58     return {
  59         markdownTemplateEngine: "njk",
  60     };
  61 };
  62
  63 /**
  64  * @param {{string | Date | DateTime}} anyDate
  65  * @returns {DateTime}
  66  */
  67 function dateTime(anyDate) {
  68     if (anyDate instanceof Date) {
  69         return DateTime.fromJSDate(anyDate);
  70     }
  71     if (DateTime.isDateTime(anyDate)) {
  72         return anyDate;
  73     }
  74     let date = parseDate(anyDate);
  75     if (date == null) { throw Error(`failed to parse date ${anyDate}`); }
  76     return date;
  77 }
  78
  79 function dateFilter(date, format) {
  80     return dateTime(date).toFormat(format);
  81 }
  82
  83 function toRfc3339Filter(date) {
  84     return dateTime(date).toISO({ suppressMilliseconds: true });
  85 }
  86
  87 function hasTimeFilter(date) {
  88     date = dateTime(date);
  89     return date.hour != 0
  90         || date.minute != 0
  91         || date.second != 0
  92         || date.millisecond != 0;
  93 }
  94
  95 /**
  96  * @param {string} dateText
  97  * @returns {{DateTime | null}}
  98  */
  99 function parseDate(dateText) {
 100     try {
 101         if (!dateText) dateText = "";
 102         const formats = [
 103             "yyyy-MM-dd HH:mm:ss z",
 104             "yyyy-MM-dd z",
 105             "yyyy-MM-dd",
 106         ];
 107         for (const format of formats) {
 108             const date = DateTime.fromFormat(dateText, format, { setZone: true });
 109             if (date.isValid) { return date; }
 110         }
 111     } catch {
 112         return null;
 113     }
 114 }
 115
 116 function access(item, path) {
 117     const segments = path.split(".");
 118     for (const seg of segments) {
 119         if (item === undefined) { return null; }
 120         if (seg.endsWith("()")) {
 121             const method = item[seg.slice(0, -2)];
 122             if (method === undefined) { return null; }
 123             item = method.bind(item)();
 124         } else {
 125             item = item[seg];
 126         }
 127     }
 128     return item;
 129 }
 130
 131 function groupby(items, keyFn) {
 132     const results = [];
 133     for (const item of items) {
 134         const key = keyFn(item);
 135         if (results.length == 0 || key != results[results.length-1][0]) {
 136             results.push([key, [item]]);
 137         } else {
 138             results[results.length-1][1].push(item);
 139         }
 140     }
 141     return results;
 142 }
 143
 144 function groupbyFilter(items, path) {
 145     return groupby(items, item => access(item, path));
 146 }
 147
 148 function youtubeShortcode(items, inWidth = 560, inHeight = 315) {
 149     const width = items.width || inWidth;
 150     const height = items.height || inHeight;
 151     const allow = items.allow || "accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture"
 152     const border = items.border || "0";
 153     const video = items.video || items;
 154     if (!video) {
 155         throw "Required argument 'video'.";
 156     }
 157     const src = "https://www.youtube.com/embed/" + video;
 158     return `<div class="youtube row hcenter">
 159  <iframe width="${width}" height="${height}" src="${src}"
 160   frameborder="${border}" allow="${allow}" allowfullscreen></iframe>
 161 </div>`;
 162 }
 163
 164 function tweetShortcode(content, items) {
 165     // @TODO: Handle parsing date
 166     return `<div class="row hcenter">
 167  <blockquote class="twitter-tweet">
 168   <p lang="en" dir="ltr">${content}</p> &mdash; ${items.name} (@${items.at})
 169   <a href="${items.link}">${items.date}</a>
 170  </blockquote>
 171  <script async src="https://platform.twitter.com/widgets.js" charset="utf-8">
 172  </script>
 173 </div>`;
 174 }
 175
 176 function asideShortcode(content, style='') {
 177     const html = md.render(content);
 178     if (style) {
 179         return `<aside class="${style}">${html}</aside>`;
 180     } else {
 181         return `<aside>${html}</aside>`;
 182     }
 183 }
 184
 185 function figureShortcode(content, { src, alt }) {
 186     const captionHtml = md.render(content);
 187     return `<figure class="col hcenter">
 188   <img src="${src}" alt="${alt}">
 189   <figcaption>${captionHtml}</figcaption>
 190 </figure>`;
 191 }
 192
 193 function htmlMinifierTransform(content, outputPath) {
 194     if (outputPath.endsWith(".html")) {
 195         return htmlMinifier.minify(content, {
 196             useShortDoctype: true,
 197             removeComments: true,
 198             collapseWhitespace: true,
 199         });
 200     }
 201     return content;
 202 }