// Filename: formurlencoded.js
// Timestamp: 2016.03.07-12:29:28 (last modified)
// Author(s): Bumblehead (www.bumblehead.com), JBlashill (james@blashill.com)
//
// http://www.w3.org/TR/html5/forms.html#url-encoded-form-data
// input: {one:1,two:2} return: '[one]=1&[two]=2'

var formurlencoded = module.exports = function (data, opts) {
  // ES5 compatible version of `/[^ !'()~\*]/gu`, https://mothereff.in/regexpu
  var encodechar = new RegExp([
    '(?:[\0-\x1F"-&\+-\}\x7F-\uD7FF\uE000-\uFFFF]|',
    '[\uD800-\uDBFF][\uDC00-\uDFFF]|[\uD800-\uDBFF](?![\uDC00-\uDFFF])|',
    '(?:[^\uD800-\uDBFF]|^)[\uDC00-\uDFFF])'
  ].join(''), 'g');

  opts = typeof opts === 'object' ? opts : {};
  
  function encode (value) {
    return String(value)
      .replace(encodechar, encodeURIComponent)
      .replace(/ /g, '+')
      .replace(/[!'()~\*]/g, function (ch) {
        return '%' + ch.charCodeAt().toString(16).slice(-2).toUpperCase();
      });
  }

  function keys (obj) {
    var keys = Object.keys(obj);

    return opts.sorted ? keys.sort() : keys;
  }

  function filterjoin (arr) {
    return arr.filter(function (e) { return e; }).join('&');
  }

  function objnest (name, obj) {
    return filterjoin(keys(obj).map(function (key) {
      return nest(name + '[' + key + ']', obj[key]);
    }));
  }

  function arrnest (name, arr) {
    return arr.length ? filterjoin(arr.map(function (elem) {
        return nest(name + '[]', elem);
    })) : encode(name + '[]');
  }

  function nest (name, value) {
    var type = typeof value,
        f = null;

    if (value === f) {
      f = opts.ignorenull ? f : encode(name) + '=' + f;
    } else if (/string|number|boolean/.test(type)) {
      f = encode(name) + '=' + encode(value);
    } else if (Array.isArray(value)) {
      f = arrnest(name, value);
    } else if (type === 'object') {
      f = objnest(name, value);
    }

    return f;
  }

  return data && filterjoin(keys(data).map(function (key) {
    return nest(key, data[key]);
  }));
};

@@ -293,25 +293,8 @@
 ed =
- module.exports =
  fun
@@ -1376,16 +1376,19 @@
 on (elem
+, i
 ) %7B%0A    
@@ -1412,16 +1412,21 @@
 ame + '%5B
+'+i+'
 %5D', elem
@@ -1454,16 +1454,21 @@
 ame + '%5B
+'+i+'
 %5D');%0A  %7D

Update form-urlencoded.js