upgrade to 3.0

_config/filters.js

@@ -23,6 +23,65 @@ export default function(eleventyConfig) {
 		return array.slice(0, n);
 	});
 
+	eleventyConfig.addFilter('mentionsForUrl', (webmentions, url) => {
+		const allowedTypes = ['in-reply-to', 'mention-of']
+
+		const allowedHTML = {
+			allowedTags: ['b', 'i', 'em', 'strong', 'a'],
+			allowedAttributes: {
+			a: ['href']
+			}
+		}
+
+		const clean = (entry) => {
+			const { html, text } = entry.content
+			if (html) {
+			entry.content.value = sanitizeHTML(text, allowedHTML)
+			};
+			return entry;
+		}
+
+		// sort webmentions by published timestamp chronologically.
+		// swap a.published and b.published to reverse order.
+		const orderByDate = (a, b) => new Date(b.published) - new Date(a.published)
+
+		// only allow webmentions that have an author name and a timestamp
+		const checkRequiredFields = (entry) => {
+			const { author, published } = entry
+			return !!author && !!author.name && !!published
+		}
+
+		return webmentions
+			.filter((entry) => entry['wm-target'] === url)
+			.filter((entry) => allowedTypes.includes(entry['wm-property']))
+			.filter(checkRequiredFields)
+			.sort(orderByDate)
+			.map(clean)
+
+	});
+
+	eleventyConfig.addFilter('likesForUrl', (webmentions, url) => {
+		const allowedTypes = ['like-of']
+		return webmentions
+			.filter((entry) => entry['wm-target'] === url)
+			.filter((entry) => allowedTypes.includes(entry['wm-property']))
+	});
+
+	eleventyConfig.addFilter('repostsForUrl', (webmentions, url) => {
+		const allowedTypes = ['repost-of']
+		return webmentions
+			.filter((entry) => entry['wm-target'] === url)
+			.filter((entry) => allowedTypes.includes(entry['wm-property']))
+	});
+
+	eleventyConfig.addFilter('size', (mentions) => {
+		return !mentions ? 0 : mentions.length
+	});
+
+	eleventyConfig.addFilter('webmentionsByType', (mentions, mentionType) => {
+		return mentions.filter(entry => !!entry['mentionType'])
+	});
+
 	// Return the smallest number argument
 	eleventyConfig.addFilter("min", (...numbers) => {
 		return Math.min.apply(null, numbers);