IITC plugin: Eruda mobile console [https://gist.github.com/johnd0e/5c798813b498c8fb5144baf9c7b7f59f/raw/debug-eruda-console.user.js]

debug-eruda-console.user.js

// ==UserScript==
// @id             debug-eruda-console
// @name           IITC plugin: Eruda mobile console
// @description    Console for Mobile Browsers: https://eruda.liriliri.io
// @category       Debug
// @version        0.3
// @author         jd
// @namespace      https://gist.github.com/johnd0e
// @homepageURL    https://gist.github.com/johnd0e/5c798813b498c8fb5144baf9c7b7f59f
// @supportURL     https://gist.github.com/johnd0e/5c798813b498c8fb5144baf9c7b7f59f#new_comment_field
// @downloadURL    https://gist.github.com/johnd0e/5c798813b498c8fb5144baf9c7b7f59f/raw/debug-eruda-console.user.js
// @match          https://intel.ingress.com/*
// @grant          none
// ==/UserScript==

function wrapper(plugin_info) {
// ensure plugin framework is there, even if iitc is not yet loaded
if(typeof window.plugin !== 'function') window.plugin = function() {};



// PLUGIN START ////////////////////////////////////////////////////////

let retries = 10;
function whenReady (resolve, reject) {
  if (document.querySelector('#map')) {
    resolve();
  } else if (retries>0) {
    retries--;
    setTimeout(whenReady, null, resolve, reject);
  } else {
    reject('#map not found');
  }
}

function eruda_load (onload) {
  const script = document.createElement('script');
  script.src = '//cdn.jsdelivr.net/npm/eruda';
  document.body.appendChild(script);
  script.onload = onload;
}

function onload () {
  storage['eruda'] = true;
  eruda.init();
  let scale;
  if (devicePixelRatio>1 && innerHeight<700) { scale = 0.7; }
  eruda.scale(scale);
}

var storage = sessionStorage; // or localStorage;
if (storage['eruda']) {
  eruda_load(()=>{
    whenReady(onload, (reason)=>{
      console.warn('eruda: ' + reason);
    })
  }); 
}

function eruda_toggle () {
  if (typeof eruda === 'undefined') {
    eruda_load(onload);
  } else if (typeof eruda.get() === 'undefined') {
    onload();
  } else {
    storage.removeItem('eruda');
    eruda.destroy();
  }
}

function setup () {
  $('<a title="Console for Mobile Browsers">Eruda</a>')
    .appendTo($('#toolbox'))
    .click(eruda_toggle);
}
setup.priority = 'boot';

// PLUGIN END //////////////////////////////////////////////////////////


setup.info = plugin_info; //add the script info data to the function as a property
if(!window.bootPlugins) window.bootPlugins = [];
window.bootPlugins.push(setup);
// if IITC has already booted, immediately run the 'setup' function
if(window.iitcLoaded && typeof setup === 'function') setup();
} // wrapper end
// inject code into site context
var script = document.createElement('script');
var info = {};
if (typeof GM_info !== 'undefined' && GM_info && GM_info.script) info.script = { version: GM_info.script.version, name: GM_info.script.name, description: GM_info.script.description };
script.appendChild(document.createTextNode('('+ wrapper +')('+JSON.stringify(info)+');'));
(document.body || document.head || document.documentElement).appendChild(script);