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.eleventy.js
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.eleventy.js
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const { DateTime } = require("luxon");
const fs = require("fs");
const pluginRss = require("@11ty/eleventy-plugin-rss");
const pluginSyntaxHighlight = require("@11ty/eleventy-plugin-syntaxhighlight");
const pluginNavigation = require("@11ty/eleventy-navigation");
const markdownIt = require("markdown-it");
const markdownItAnchor = require("markdown-it-anchor");
const toc = require('eleventy-plugin-nesting-toc');
const { srcset, src } = require('./_includes/shortcodes/images');
const externalLinks = require('eleventy-plugin-external-links');
const env = process.env.ENV;
module.exports = function(eleventyConfig) {
// Add plugins
eleventyConfig.addPlugin(pluginRss);
eleventyConfig.addPlugin(pluginSyntaxHighlight);
eleventyConfig.addPlugin(pluginNavigation);
eleventyConfig.addPlugin(externalLinks, {
name: 'external-links', // Plugin name
regex: /^(([a-z]+:)|(\/\/))/i, // Regex that test if href is external
target: "_blank", // 'target' attribute for external links
rel: "noopener", // 'rel' attribute for external links
extensions: [".html"], // Extensions to apply transform to
includeDoctype: true, // Default to include '<!DOCTYPE html>' at the beginning of the file
})
// Shortcodes
eleventyConfig.addShortcode('src', src);
eleventyConfig.addShortcode('srcset', srcset);
// Show nested TOC for development so I can
// easily see content outlines
let tocTags = [];
if (env == 'dev') {
tocTags = ['h2', 'h3', 'h4', 'h5'];
} else if (env == 'prod') {
tocTags = ['h2', 'h3'];
}
eleventyConfig.addPlugin(toc, {
tags: tocTags,
wrapper: 'nav',
wrapperClass: 'toc-nav',
headingText: '',
});
// https://www.11ty.dev/docs/data-deep-merge/
eleventyConfig.setDataDeepMerge(true);
// Alias `layout: post` to `layout: layouts/post.njk`
eleventyConfig.addLayoutAlias("post", "layouts/post.njk");
eleventyConfig.addFilter("plural", string => {
return `${string}s`;
});
eleventyConfig.addFilter("readableDate", dateObj => {
return DateTime.fromJSDate(dateObj, {zone: 'utc'}).toFormat("LLL dd, yyyy");
});
eleventyConfig.addFilter("longDate", dateObj => {
return DateTime.fromJSDate(dateObj, {zone: 'utc'}).toFormat("DDDD");
});
eleventyConfig.addFilter("postMonth", dateObj => {
return DateTime.fromJSDate(dateObj, {zone: 'utc'}).toFormat("LLL dd");
});
eleventyConfig.addFilter("postYear", dateObj => {
return DateTime.fromJSDate(dateObj, {zone: 'utc'}).toFormat("yyyy");
});
// https://html.spec.whatwg.org/multipage/common-microsyntaxes.html#valid-date-string
eleventyConfig.addFilter('htmlDateString', (dateObj) => {
return DateTime.fromJSDate(dateObj, {zone: 'utc'}).toFormat('yyyy-LL-dd');
});
// Get the first `n` elements of a collection.
eleventyConfig.addFilter("head", (array, n) => {
if( n < 0 ) {
return array.slice(n);
}
return array.slice(0, n);
});
// Return the smallest number argument
eleventyConfig.addFilter("min", (...numbers) => {
return Math.min.apply(null, numbers);
});
function filterTagList(tags) {
return (tags || []).filter(tag => ["all", "nav", "post", "posts", "Featured"].indexOf(tag) === -1);
}
eleventyConfig.addFilter("filterTagList", filterTagList)
// Create a collection of all tags
eleventyConfig.addCollection("tagList", function(collection) {
let tagSet = new Set();
collection.getAll().forEach(item => {
(item.data.tags || []).forEach(tag => tagSet.add(tag));
});
return filterTagList([...tagSet]);
});
// Create a collection of all content types
eleventyConfig.addCollection('typeList', function(collection) {
// Create a new Set object to store unique
// collection of values for content types
// Ref: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Set
let typeSet = new Set();
// Get all items items from Eleventy
// Ref: https://www.11ty.dev/docs/collections/#getall()
collection.getAll().filter(function(item) {
// Filter items based on the `Type` key existing
// Store value of `Type` key in `typeSet` if we haven't already
return "type" in item.data ? typeSet.add(item.data.type) : false;
});
// Return all content types
return typeSet;
});
// Explicitly create collections for each post type
// Get all posts and sort reverse-chronologically
// then filter based on whether they have a `Type` key
// that contains 'Reflections'
eleventyConfig.addCollection('essay', function(collection) {
return collection.getAllSorted().filter(function(item) {
if ("type" in item.data) {
return item.data.type == 'Essay' ? item : false;
}
});
});
eleventyConfig.addCollection('tutorial', function(collection) {
return collection.getAllSorted().filter(function(item) {
if ("type" in item.data) {
return item.data.type == 'Tutorial' ? item : false;
}
});
});
eleventyConfig.addCollection('article', function(collection) {
return collection.getAllSorted().filter(function(item) {
if ("type" in item.data) {
return item.data.type == 'Article' ? item : false;
}
});
});
eleventyConfig.addCollection('reflection', function(collection) {
return collection.getAllSorted().filter(function(item) {
if ("type" in item.data) {
return item.data.type == 'Reflection' ? item : false;
}
});
});
// Collection for drafts
eleventyConfig.addCollection('draft', function(collection) {
return collection.getFilteredByGlob("drafts/*.md").filter(function(item) {
return item;
});
});
// Collection for featured posts
eleventyConfig.addCollection('featured', function(collection) {
return collection.getFilteredByTag('Featured');
});
// Collection for resources
eleventyConfig.addCollection('resource', function(collection) {
return collection.getFilteredByGlob("resources/*.md").filter(function(item) {
return item;
});
});
// Collection for portfolio
eleventyConfig.addCollection('portfolio', function(collection) {
return collection.getFilteredByGlob("portfolio/*.md").filter(function(item) {
return item;
});
});
// Collection for services
eleventyConfig.addCollection('services', function(collection) {
return collection.getFilteredByGlob("services/*.md").filter(function(item) {
return item;
});
});
// Collection for bookshelf
eleventyConfig.addCollection('book', function(collection) {
return collection.getFilteredByGlob('bookshelf/*.md').filter(function(item) {
return item;
});
});
// Copy the `images` and `css` folders to the output
eleventyConfig.addPassthroughCopy("images");
eleventyConfig.addPassthroughCopy("css");
eleventyConfig.addPassthroughCopy("js");
// Customize Markdown library and settings:
let markdown = markdownIt({
html: true,
breaks: true,
linkify: true
}).use(markdownItAnchor, {
permalink: markdownItAnchor.permalink.headerLink()
}).disable('code').use(require('markdown-it-footnote')); // Addressing https://www.11ty.dev/docs/languages/markdown/#there-are-extra-and-in-my-output
eleventyConfig.setLibrary("md", markdown);
markdown.renderer.rules.footnote_block_open = () => (
'<section class="footnotes">\n' +
'<h2 class="_label"><span>Footnotes</span></h2>\n' +
'<ol class="footnotes-list">\n'
);
// Retrieve first image for post in collection
// Ref: https://github.com/11ty/eleventy/issues/230
eleventyConfig.addShortcode('first_image', post => extractFirstImage(post, 'tag'));
eleventyConfig.addShortcode('first_image_link', post => extractFirstImage(post, 'link'));
/**
* @param {*} doc A large object full of all sorts of information about a document.
* @returns {String} the markup of the first image.
*/
function extractFirstImage(doc, type) {
if (!doc.hasOwnProperty('templateContent')) {
console.warn('❌ Failed to extract image: Document has no property `templateContent`.');
return;
}
const content = doc.templateContent;
if (content.includes('<img')) {
if (type == 'tag') {
const imgTagBegin = content.indexOf('<img');
const imgTagEnd = content.indexOf('>', imgTagBegin);
return content.substring(imgTagBegin, imgTagEnd + 1);
}
if (type == 'link') {
const imgSrcBegin = content.indexOf('src="');
const imgSrcEnd = content.indexOf('" ');
return content.substring(imgSrcBegin + 5, imgSrcEnd);
}
}
return '';
}
// Override Browsersync defaults (used only with --serve)
eleventyConfig.setBrowserSyncConfig({
callbacks: {
ready: function(err, browserSync) {
const content_404 = fs.readFileSync('_site/404.html');
browserSync.addMiddleware("*", (req, res) => {
// Provides the 404 content without redirect.
res.writeHead(404, {"Content-Type": "text/html; charset=UTF-8"});
res.write(content_404);
res.end();
});
},
},
ui: false,
ghostMode: false
});
// Playing with shortcodes
eleventyConfig.addShortcode("p_large", function(p_large) {
return `<p class="-large">${p_large.content}</p>`;
});
return {
// Control which files Eleventy will process
// e.g.: *.md, *.njk, *.html, *.liquid
templateFormats: [
"md",
"njk",
"html",
"liquid"
],
// -----------------------------------------------------------------
// If your site deploys to a subdirectory, change `pathPrefix`.
// Don’t worry about leading and trailing slashes, we normalize these.
// If you don’t have a subdirectory, use "" or "/" (they do the same thing)
// This is only used for link URLs (it does not affect your file structure)
// Best paired with the `url` filter: https://www.11ty.dev/docs/filters/url/
// You can also pass this in on the command line using `--pathprefix`
// Optional (default is shown)
pathPrefix: "/",
// -----------------------------------------------------------------
// Pre-process *.md files with: (default: `liquid`)
markdownTemplateEngine: "liquid",
// Pre-process *.html files with: (default: `liquid`)
htmlTemplateEngine: "liquid",
// Opt-out of pre-processing global data JSON files: (default: `liquid`)
dataTemplateEngine: false,
// These are all optional (defaults are shown):
dir: {
input: ".",
includes: "_includes",
data: "_data",
output: "_site"
}
};
};