A TamperMonkey script for Mastodon that makes it easy to jump from looking at someone's profile on another server to following them on your server

Mastodon_Follow_Locally_Mod_TamperMonkey.js

// ==UserScript==
// @name         Mastodon Follow Locally Mod
// @namespace    http://www.grahamlea.com/
// @version      0.1
// @description  Allows you to follow Mastodon accounts from other servers more easily
// @author       Graham Lea (@[email protected])
// @match        https://*/*
// @require      http://code.jquery.com/jquery-latest.js
// @grant        none
// ==/UserScript==

// Change this to the domain of your Mastodon server:
let yourMastodonServerDomain = "aus.social";

function addYourServerButtonToFollowDialog() {
    let section = $("#mastodon .ui .interaction-modal .interaction-modal__choices__choice").last();
    if (section.length) {
        //console.log("Different Server choice showing");
        let heading = section.find("h3");
        if (heading.text() != "On Your Server") {
            //console.log("Updating Different Server choice");
            heading.text("On Your Server");
            const accountUrl = section.find(".copypaste input").val();
            const destinationUrl = "https://" + yourMastodonServerDomain + "/authorize_interaction?uri=" + accountUrl;
            heading.after("<a href='" + destinationUrl + "' class='button followLocallyButton' target='_blank'>Follow on " + yourMastodonServerDomain + "</a>");
            section.find(".followLocallyButton").css("width", "100%");
        }
    }
}

(function() {
    'use strict';

    //console.log("Mastodon Follow Locally Mod loaded");
    if (document.getElementById("mastodon") != undefined) {
        console.log("Mastodon Follow Locally Mod activating");
        window.setInterval(addYourServerButtonToFollowDialog, 1000);
    }

})();