Control.Geocoder.js

/* @preserve
 * Leaflet Control Geocoder 1.13.0
 * https://github.com/perliedman/leaflet-control-geocoder
 *
 * Copyright (c) 2012 sa3m (https://github.com/sa3m)
 * Copyright (c) 2018 Per Liedman
 * All rights reserved.
 */

this.L = this.L || {};
this.L.Control = this.L.Control || {};
this.L.Control.Geocoder = (function (L) {
  'use strict';

  L = L && Object.prototype.hasOwnProperty.call(L, 'default') ? L['default'] : L;

  var lastCallbackId = 0;

  // Adapted from handlebars.js
  // https://github.com/wycats/handlebars.js/
  var badChars = /[&<>"'`]/g;
  var possible = /[&<>"'`]/;
  var escape = {
    '&': '&amp;',
    '<': '&lt;',
    '>': '&gt;',
    '"': '&quot;',
    "'": '&#x27;',
    '`': '&#x60;'
  };

  function escapeChar(chr) {
    return escape[chr];
  }

  function htmlEscape(string) {
    if (string == null) {
      return '';
    } else if (!string) {
      return string + '';
    }

    // Force a string conversion as this will be done by the append regardless and
    // the regex test will do this transparently behind the scenes, causing issues if
    // an object's to string has escaped characters in it.
    string = '' + string;

    if (!possible.test(string)) {
      return string;
    }
    return string.replace(badChars, escapeChar);
  }

  function jsonp(url, params, callback, context, jsonpParam) {
    var callbackId = '_l_geocoder_' + lastCallbackId++;
    params[jsonpParam || 'callback'] = callbackId;
    window[callbackId] = L.Util.bind(callback, context);
    var script = document.createElement('script');
    script.type = 'text/javascript';
    script.src = url + getParamString(params);
    script.id = callbackId;
    document.getElementsByTagName('head')[0].appendChild(script);
  }

  function getJSON(url, params, callback) {
    var xmlHttp = new XMLHttpRequest();
    xmlHttp.onreadystatechange = function() {
      if (xmlHttp.readyState !== 4) {
        return;
      }