Sets emoji icons for tasks in Trello.

trello.js

/**
 * Sets emoji icons for tasks. 
 */
var emojize = function () {
  var tasks = Array.prototype.slice.call(document.querySelectorAll('.checklist-item:not(.checklist-item-state-complete)')),
      i = 0,
      len = tasks.length,
      replacers = [
        {
          from: '/^low:\s/',
          to: 'low: '
        },
        {
          from: /^norm:\s/,
          to: ':exclamation: norm: '
        },
        {
          from: /^high:\s/,
          to: ':bangbang: high: '
        },
        {
          from: /^extra high:\s/,
          to: ':bangbang: extra high:'
        }
      ];

  function processTask() {
    var task = tasks[i],
        desc = task.querySelector('.checklist-item-details-text'),
        area;

    area = task.querySelector('textarea.field'),

    desc.click();
    replacers.forEach(function (replacer) {
      area.value = area.value.replace(replacer.from, replacer.to);
    })
    setTimeout(function() {
      task.querySelector('input[type="submit"]').click();
    }, 50);

    if (i + 1 !== len) {
      i++;
      setTimeout(processTask, 100)
    }
  }
  
  processTask();
};