107 lines
3.1 KiB
JavaScript
107 lines
3.1 KiB
JavaScript
import { DateTime } from "luxon";
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import sanitizeHtml from 'sanitize-html';
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export default function(eleventyConfig) {
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eleventyConfig.addFilter("readableDate", (dateObj, format, zone) => {
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// Formatting tokens for Luxon: https://moment.github.io/luxon/#/formatting?id=table-of-tokens
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return DateTime.fromJSDate(dateObj, { zone: zone || "utc" }).toFormat(format || "dd LLLL yyyy");
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});
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eleventyConfig.addFilter('dateFromTimestamp', (timestamp) => {
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return DateTime.fromISO(timestamp, { zone: 'America/New_York' }).toJSDate()
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})
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eleventyConfig.addFilter("htmlDateString", (dateObj) => {
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// dateObj input: https://html.spec.whatwg.org/multipage/common-microsyntaxes.html#valid-date-string
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return DateTime.fromJSDate(dateObj, { zone: "utc" }).toFormat('yyyy-LL-dd');
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});
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// Get the first `n` elements of a collection.
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eleventyConfig.addFilter("head", (array, n) => {
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if(!Array.isArray(array) || array.length === 0) {
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return [];
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}
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if( n < 0 ) {
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return array.slice(n);
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}
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return array.slice(0, n);
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});
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eleventyConfig.addFilter('mentionsForUrl', (webmentions, url) => {
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const allowedTypes = ['in-reply-to', 'mention-of']
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const allowedHTML = {
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allowedTags: ['b', 'i', 'em', 'strong', 'a'],
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allowedAttributes: {
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a: ['href']
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}
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}
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const clean = (entry) => {
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const { html, text } = entry.content
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if (html) {
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entry.content.value = sanitizeHtml(text, allowedHTML)
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};
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return entry;
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}
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// sort webmentions by published timestamp chronologically.
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// swap a.published and b.published to reverse order.
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const orderByDate = (a, b) => new Date(b.published) - new Date(a.published)
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// only allow webmentions that have an author name and a timestamp
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const checkRequiredFields = (entry) => {
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const { author, published } = entry
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return !!author && !!author.name && !!published
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}
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return webmentions
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.filter((entry) => entry['wm-target'] === url)
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.filter((entry) => allowedTypes.includes(entry['wm-property']))
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.filter(checkRequiredFields)
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.sort(orderByDate)
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.map(clean)
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});
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eleventyConfig.addFilter('likesForUrl', (webmentions, url) => {
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const allowedTypes = ['like-of']
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return webmentions
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.filter((entry) => entry['wm-target'] === url)
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.filter((entry) => allowedTypes.includes(entry['wm-property']))
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});
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eleventyConfig.addFilter('repostsForUrl', (webmentions, url) => {
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const allowedTypes = ['repost-of']
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return webmentions
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.filter((entry) => entry['wm-target'] === url)
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.filter((entry) => allowedTypes.includes(entry['wm-property']))
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});
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eleventyConfig.addFilter('size', (mentions) => {
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return !mentions ? 0 : mentions.length
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});
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eleventyConfig.addFilter('webmentionsByType', (mentions, mentionType) => {
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return mentions.filter(entry => !!entry['mentionType'])
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});
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// Return the smallest number argument
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eleventyConfig.addFilter("min", (...numbers) => {
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return Math.min.apply(null, numbers);
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});
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// Return the keys used in an object
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eleventyConfig.addFilter("getKeys", target => {
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return Object.keys(target);
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});
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eleventyConfig.addFilter("filterTagList", function filterTagList(tags) {
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return (tags || []).filter(tag => ["all", "posts"].indexOf(tag) === -1);
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});
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};
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