(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.Qs = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
// Load modules

var Stringify = require('./stringify');
var Parse = require('./parse');


// Declare internals

var internals = {};


module.exports = {
    stringify: Stringify,
    parse: Parse
};

},{"./parse":2,"./stringify":3}],2:[function(require,module,exports){
// Load modules

var Utils = require('./utils');


// Declare internals

var internals = {
    delimiter: '&',
    depth: 5,
    arrayLimit: 20,
    parameterLimit: 1000,
    strictNullHandling: false,
    plainObjects: false,
    allowPrototypes: false,
    allowDots: false
};


internals.parseValues = function (str, options) {

    var obj = {};
    var parts = str.split(options.delimiter, options.parameterLimit === Infinity ? undefined : options.parameterLimit);

    for (var i = 0, il = parts.length; i < il; ++i) {
        var part = parts[i];
        var pos = part.indexOf(']=') === -1 ? part.indexOf('=') : part.indexOf(']=') + 1;

        if (pos === -1) {
            obj[Utils.decode(part)] = '';

            if (options.strictNullHandling) {
                obj[Utils.decode(part)] = null;
            }
        }
        else {
            var key = Utils.decode(part.slice(0, pos));
            var val = Utils.decode(part.slice(pos + 1));

            if (!Object.prototype.hasOwnProperty.call(obj, key)) {
                obj[key] = val;
            }
            else {
                obj[key] = [].concat(obj[key]).concat(val);
            }
        }
    }

    return obj;
};


internals.parseObject = function (chain, val, options) {

    if (!chain.length) {
        return val;
    }

    var root = chain.shift();

    var obj;
    if (root === '[]') {
        obj = [];
        obj = obj.concat(internals.parseObject(chain, val, options));
    }
    else {
        obj = options.plainObjects ? Object.create(null) : {};
        var cleanRoot = root[0] === '[' && root[root.length - 1] === ']' ? root.slice(1, root.length - 1) : root;
        var index = parseInt(cleanRoot, 10);
        var indexString = '' + index;
        if (!isNaN(index) &&
            root !== cleanRoot &&
            indexString === cleanRoot &&
            index >= 0 &&
            (options.parseArrays &&
             index <= options.arrayLimit)) {

            obj = [];
            obj[index] = internals.parseObject(chain, val, options);
        }
        else {
            obj[cleanRoot] = internals.parseObject(chain, val, options);
        }
    }

    return obj;
};


internals.parseKeys = function (key, val, options) {

    if (!key) {
        return;
    }

    // Transform dot notation to bracket notation

    if (options.allowDots) {
        key = key.replace(/\.([^\.\[]+)/g, '[$1]');
    }

    // The regex chunks

    var parent = /^([^\[\]]*)/;
    var child = /(\[[^\[\]]*\])/g;

    // Get the parent

    var segment = parent.exec(key);

    // Stash the parent if it exists

    var keys = [];
    if (segment[1]) {
        // If we aren't using plain objects, optionally prefix keys
        // that would overwrite object prototype properties
        if (!options.plainObjects &&
            Object.prototype.hasOwnProperty(segment[1])) {

            if (!options.allowPrototypes) {
                return;
            }
        }

        keys.push(segment[1]);
    }

    // Loop through children appending to the array until we hit depth

    var i = 0;
    while ((segment = child.exec(key)) !== null && i < options.depth) {

        ++i;
        if (!options.plainObjects &&
            Object.prototype.hasOwnProperty(segment[1].replace(/\[|\]/g, ''))) {

            if (!options.allowPrototypes) {
                continue;
            }
        }
        keys.push(segment[1]);
    }

    // If there's a remainder, just add whatever is left

    if (segment) {
        keys.push('[' + key.slice(segment.index) + ']');
    }

    return internals.parseObject(keys, val, options);
};


module.exports = function (str, options) {

    options = options || {};
    options.delimiter = typeof options.delimiter === 'string' || Utils.isRegExp(options.delimiter) ? options.delimiter : internals.delimiter;
    options.depth = typeof options.depth === 'number' ? options.depth : internals.depth;
    options.arrayLimit = typeof options.arrayLimit === 'number' ? options.arrayLimit : internals.arrayLimit;
    options.parseArrays = options.parseArrays !== false;
    options.allowDots = typeof options.allowDots === 'boolean' ? options.allowDots : internals.allowDots;
    options.plainObjects = typeof options.plainObjects === 'boolean' ? options.plainObjects : internals.plainObjects;
    options.allowPrototypes = typeof options.allowPrototypes === 'boolean' ? options.allowPrototypes : internals.allowPrototypes;
    options.parameterLimit = typeof options.parameterLimit === 'number' ? options.parameterLimit : internals.parameterLimit;
    options.strictNullHandling = typeof options.strictNullHandling === 'boolean' ? options.strictNullHandling : internals.strictNullHandling;

    if (str === '' ||
        str === null ||
        typeof str === 'undefined') {

        return options.plainObjects ? Object.create(null) : {};
    }

    var tempObj = typeof str === 'string' ? internals.parseValues(str, options) : str;
    var obj = options.plainObjects ? Object.create(null) : {};

    // Iterate over the keys and setup the new object

    var keys = Object.keys(tempObj);
    for (var i = 0, il = keys.length; i < il; ++i) {
        var key = keys[i];
        var newObj = internals.parseKeys(key, tempObj[key], options);
        obj = Utils.merge(obj, newObj, options);
    }

    return Utils.compact(obj);
};

},{"./utils":4}],3:[function(require,module,exports){
// Load modules

var Utils = require('./utils');


// Declare internals

var internals = {
    delimiter: '&',
    arrayPrefixGenerators: {
        brackets: function (prefix, key) {

            return prefix + '[]';
        },
        indices: function (prefix, key) {

            return prefix + '[' + key + ']';
        },
        repeat: function (prefix, key) {

            return prefix;
        }
    },
    strictNullHandling: false,
    skipNulls: false,
    encode: true
};


internals.stringify = function (obj, prefix, generateArrayPrefix, strictNullHandling, skipNulls, encode, filter) {

    if (typeof filter === 'function') {
        obj = filter(prefix, obj);
    }
    else if (Utils.isBuffer(obj)) {
        obj = obj.toString();
    }
    else if (obj instanceof Date) {
        obj = obj.toISOString();
    }
    else if (obj === null) {
        if (strictNullHandling) {
            return encode ? Utils.encode(prefix) : prefix;
        }

        obj = '';
    }

    if (typeof obj === 'string' ||
        typeof obj === 'number' ||
        typeof obj === 'boolean') {

        if (encode) {
            return [Utils.encode(prefix) + '=' + Utils.encode(obj)];
        }
        return [prefix + '=' + obj];
    }

    var values = [];

    if (typeof obj === 'undefined') {
        return values;
    }

    var objKeys = Array.isArray(filter) ? filter : Object.keys(obj);
    for (var i = 0, il = objKeys.length; i < il; ++i) {
        var key = objKeys[i];

        if (skipNulls &&
            obj[key] === null) {

            continue;
        }

        if (Array.isArray(obj)) {
            values = values.concat(internals.stringify(obj[key], generateArrayPrefix(prefix, key), generateArrayPrefix, strictNullHandling, skipNulls, encode, filter));
        }
        else {
            values = values.concat(internals.stringify(obj[key], prefix + '[' + key + ']', generateArrayPrefix, strictNullHandling, skipNulls, encode, filter));
        }
    }

    return values;
};


module.exports = function (obj, options) {

    options = options || {};
    var delimiter = typeof options.delimiter === 'undefined' ? internals.delimiter : options.delimiter;
    var strictNullHandling = typeof options.strictNullHandling === 'boolean' ? options.strictNullHandling : internals.strictNullHandling;
    var skipNulls = typeof options.skipNulls === 'boolean' ? options.skipNulls : internals.skipNulls;
    var encode = typeof options.encode === 'boolean' ? options.encode : internals.encode;
    var objKeys;
    var filter;
    if (typeof options.filter === 'function') {
        filter = options.filter;
        obj = filter('', obj);
    }
    else if (Array.isArray(options.filter)) {
        objKeys = filter = options.filter;
    }

    var keys = [];

    if (typeof obj !== 'object' ||
        obj === null) {

        return '';
    }

    var arrayFormat;
    if (options.arrayFormat in internals.arrayPrefixGenerators) {
        arrayFormat = options.arrayFormat;
    }
    else if ('indices' in options) {
        arrayFormat = options.indices ? 'indices' : 'repeat';
    }
    else {
        arrayFormat = 'indices';
    }

    var generateArrayPrefix = internals.arrayPrefixGenerators[arrayFormat];

    if (!objKeys) {
        objKeys = Object.keys(obj);
    }

    for (var i = 0, il = objKeys.length; i < il; ++i) {
        var key = objKeys[i];

        if (skipNulls &&
            obj[key] === null) {

            continue;
        }

        keys = keys.concat(internals.stringify(obj[key], key, generateArrayPrefix, strictNullHandling, skipNulls, encode, filter));
    }

    return keys.join(delimiter);
};

},{"./utils":4}],4:[function(require,module,exports){
// Load modules


// Declare internals

var internals = {};
internals.hexTable = new Array(256);
for (var h = 0; h < 256; ++h) {
    internals.hexTable[h] = '%' + ((h < 16 ? '0' : '') + h.toString(16)).toUpperCase();
}


exports.arrayToObject = function (source, options) {

    var obj = options.plainObjects ? Object.create(null) : {};
    for (var i = 0, il = source.length; i < il; ++i) {
        if (typeof source[i] !== 'undefined') {

            obj[i] = source[i];
        }
    }

    return obj;
};


exports.merge = function (target, source, options) {

    if (!source) {
        return target;
    }

    if (typeof source !== 'object') {
        if (Array.isArray(target)) {
            target.push(source);
        }
        else if (typeof target === 'object') {
            target[source] = true;
        }
        else {
            target = [target, source];
        }

        return target;
    }

    if (typeof target !== 'object') {
        target = [target].concat(source);
        return target;
    }

    if (Array.isArray(target) &&
        !Array.isArray(source)) {

        target = exports.arrayToObject(target, options);
    }

    var keys = Object.keys(source);
    for (var k = 0, kl = keys.length; k < kl; ++k) {
        var key = keys[k];
        var value = source[key];

        if (!Object.prototype.hasOwnProperty.call(target, key)) {
            target[key] = value;
        }
        else {
            target[key] = exports.merge(target[key], value, options);
        }
    }

    return target;
};


exports.decode = function (str) {

    try {
        return decodeURIComponent(str.replace(/\+/g, ' '));
    } catch (e) {
        return str;
    }
};

exports.encode = function (str) {

    // This code was originally written by Brian White (mscdex) for the io.js core querystring library.
    // It has been adapted here for stricter adherence to RFC 3986
    if (str.length === 0) {
        return str;
    }

    if (typeof str !== 'string') {
        str = '' + str;
    }

    var out = '';
    for (var i = 0, il = str.length; i < il; ++i) {
        var c = str.charCodeAt(i);

        if (c === 0x2D || // -
            c === 0x2E || // .
            c === 0x5F || // _
            c === 0x7E || // ~
            (c >= 0x30 && c <= 0x39) || // 0-9
            (c >= 0x41 && c <= 0x5A) || // a-z
            (c >= 0x61 && c <= 0x7A)) { // A-Z

            out += str[i];
            continue;
        }

        if (c < 0x80) {
            out += internals.hexTable[c];
            continue;
        }

        if (c < 0x800) {
            out += internals.hexTable[0xC0 | (c >> 6)] + internals.hexTable[0x80 | (c & 0x3F)];
            continue;
        }

        if (c < 0xD800 || c >= 0xE000) {
            out += internals.hexTable[0xE0 | (c >> 12)] + internals.hexTable[0x80 | ((c >> 6) & 0x3F)] + internals.hexTable[0x80 | (c & 0x3F)];
            continue;
        }

        ++i;
        c = 0x10000 + (((c & 0x3FF) << 10) | (str.charCodeAt(i) & 0x3FF));
        out += internals.hexTable[0xF0 | (c >> 18)] + internals.hexTable[0x80 | ((c >> 12) & 0x3F)] + internals.hexTable[0x80 | ((c >> 6) & 0x3F)] + internals.hexTable[0x80 | (c & 0x3F)];
    }

    return out;
};

exports.compact = function (obj, refs) {

    if (typeof obj !== 'object' ||
        obj === null) {

        return obj;
    }

    refs = refs || [];
    var lookup = refs.indexOf(obj);
    if (lookup !== -1) {
        return refs[lookup];
    }

    refs.push(obj);

    if (Array.isArray(obj)) {
        var compacted = [];

        for (var i = 0, il = obj.length; i < il; ++i) {
            if (typeof obj[i] !== 'undefined') {
                compacted.push(obj[i]);
            }
        }

        return compacted;
    }

    var keys = Object.keys(obj);
    for (i = 0, il = keys.length; i < il; ++i) {
        var key = keys[i];
        obj[key] = exports.compact(obj[key], refs);
    }

    return obj;
};


exports.isRegExp = function (obj) {

    return Object.prototype.toString.call(obj) === '[object RegExp]';
};


exports.isBuffer = function (obj) {

    if (obj === null ||
        typeof obj === 'undefined') {

        return false;
    }

    return !!(obj.constructor &&
              obj.constructor.isBuffer &&
              obj.constructor.isBuffer(obj));
};

},{}]},{},[1])(1)
});
