Eleventy Notes provides a number of collections that you can use in your notes.
Notes
collections.notes contains all your notes:
[
  {
    // The title of the note
    title: "My Note",
    // The list of tags
    tags: ["tag1", "tag2"],
    // Filename without extension
    fileSlug: "My Note",
    // Filepath without extension
    filePathStem: "/My Folder/My Note",
    // The URL of the note
    url: "/n/my-folder/my-note/",
    // The date of the note
    date: new Date(),
  },
];Tags
collections.tags contains all tags and their notes:
[
  {
    // The name of the tag
    title: "tag1",
    // The url of the tag page
    url: "/tags/tag1/",
    // The list of notes that have this tag
    notes: [
      {
        // See the notes collection above for the properties
      },
    ],
  },
];