This is the webmqntiosn filter and webventions partial for my 11ty blog

.eleventy.js

eleventyConfig.addFilter("countWebmentions", function(webmentionsFilePath, url) {
    // Load and parse the webmentions JSON file
    const data = JSON.parse(fs.readFileSync(webmentionsFilePath, 'utf8'));

    // Filter webmentions based on the provided URL
    const filteredWebmentions = data.children.filter(entry => {
      return entry['like-of'] === url || entry['in-reply-to'] === url || entry['repost-of'] === url;
    });

    // Initialize counts for each type
    let likeCount = 0;
    let replyCount = 0;
    let repostCount = 0;

    // Loop through each entry in the filtered webmentions
    filteredWebmentions.forEach(entry => {
      // Check if the entry matches the given URL for like, reply, or repost
      if (entry['like-of'] === url) {
        likeCount++;
      }
      if (entry['in-reply-to'] === url) {
        replyCount++;
      }
      if (entry['repost-of'] === url) {
        repostCount++;
      }
    });

    // Return an object containing the counts
    return {
      likeCount,
      replyCount,
      repostCount
    };
  });

webmentions.njk

{% set webmentionsFilePath = '_cache/webmentions.json' %}
{% set currentPageUrl = page.url | url | absoluteUrl(metadata.url) %}
{% set webmentionCounts = webmentionsFilePath | countWebmentions(currentPageUrl) %}

Likes: {{ webmentionCounts.likeCount }}
Replies: {{ webmentionCounts.replyCount }}
Reposts: {{ webmentionCounts.repostCount }}