(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(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){
    'use strict';
    
    var replace = String.prototype.replace;
    var percentTwenties = /%20/g;
    
    var util = require('./utils');
    
    var Format = {
        RFC1738: 'RFC1738',
        RFC3986: 'RFC3986'
    };
    
    module.exports = util.assign(
        {
            'default': Format.RFC3986,
            formatters: {
                RFC1738: function (value) {
                    return replace.call(value, percentTwenties, '+');
                },
                RFC3986: function (value) {
                    return String(value);
                }
            }
        },
        Format
    );
    
    },{"./utils":5}],2:[function(require,module,exports){
    'use strict';
    
    var stringify = require('./stringify');
    var parse = require('./parse');
    var formats = require('./formats');
    
    module.exports = {
        formats: formats,
        parse: parse,
        stringify: stringify
    };
    
    },{"./formats":1,"./parse":3,"./stringify":4}],3:[function(require,module,exports){
    'use strict';
    
    var utils = require('./utils');
    
    var has = Object.prototype.hasOwnProperty;
    var isArray = Array.isArray;
    
    var defaults = {
        allowDots: false,
        allowPrototypes: false,
        arrayLimit: 20,
        charset: 'utf-8',
        charsetSentinel: false,
        comma: false,
        decoder: utils.decode,
        delimiter: '&',
        depth: 5,
        ignoreQueryPrefix: false,
        interpretNumericEntities: false,
        parameterLimit: 1000,
        parseArrays: true,
        plainObjects: false,
        strictNullHandling: false
    };
    
    var interpretNumericEntities = function (str) {
        return str.replace(/&#(\d+);/g, function ($0, numberStr) {
            return String.fromCharCode(parseInt(numberStr, 10));
        });
    };
    
    var parseArrayValue = function (val, options) {
        if (val && typeof val === 'string' && options.comma && val.indexOf(',') > -1) {
            return val.split(',');
        }
    
        return val;
    };
    
    // This is what browsers will submit when the ✓ character occurs in an
    // application/x-www-form-urlencoded body and the encoding of the page containing
    // the form is iso-8859-1, or when the submitted form has an accept-charset
    // attribute of iso-8859-1. Presumably also with other charsets that do not contain
    // the ✓ character, such as us-ascii.
    var isoSentinel = 'utf8=%26%2310003%3B'; // encodeURIComponent('&#10003;')
    
    // These are the percent-encoded utf-8 octets representing a checkmark, indicating that the request actually is utf-8 encoded.
    var charsetSentinel = 'utf8=%E2%9C%93'; // encodeURIComponent('✓')
    
    var parseValues = function parseQueryStringValues(str, options) {
        var obj = {};
        var cleanStr = options.ignoreQueryPrefix ? str.replace(/^\?/, '') : str;
        var limit = options.parameterLimit === Infinity ? undefined : options.parameterLimit;
        var parts = cleanStr.split(options.delimiter, limit);
        var skipIndex = -1; // Keep track of where the utf8 sentinel was found
        var i;
    
        var charset = options.charset;
        if (options.charsetSentinel) {
            for (i = 0; i < parts.length; ++i) {
                if (parts[i].indexOf('utf8=') === 0) {
                    if (parts[i] === charsetSentinel) {
                        charset = 'utf-8';
                    } else if (parts[i] === isoSentinel) {
                        charset = 'iso-8859-1';
                    }
                    skipIndex = i;
                    i = parts.length; // The eslint settings do not allow break;
                }
            }
        }
    
        for (i = 0; i < parts.length; ++i) {
            if (i === skipIndex) {
                continue;
            }
            var part = parts[i];
    
            var bracketEqualsPos = part.indexOf(']=');
            var pos = bracketEqualsPos === -1 ? part.indexOf('=') : bracketEqualsPos + 1;
    
            var key, val;
            if (pos === -1) {
                key = options.decoder(part, defaults.decoder, charset, 'key');
                val = options.strictNullHandling ? null : '';
            } else {
                key = options.decoder(part.slice(0, pos), defaults.decoder, charset, 'key');
                val = utils.maybeMap(
                    parseArrayValue(part.slice(pos + 1), options),
                    function (encodedVal) {
                        return options.decoder(encodedVal, defaults.decoder, charset, 'value');
                    }
                );
            }
    
            if (val && options.interpretNumericEntities && charset === 'iso-8859-1') {
                val = interpretNumericEntities(val);
            }
    
            if (part.indexOf('[]=') > -1) {
                val = isArray(val) ? [val] : val;
            }
    
            if (has.call(obj, key)) {
                obj[key] = utils.combine(obj[key], val);
            } else {
                obj[key] = val;
            }
        }
    
        return obj;
    };
    
    var parseObject = function (chain, val, options, valuesParsed) {
        var leaf = valuesParsed ? val : parseArrayValue(val, options);
    
        for (var i = chain.length - 1; i >= 0; --i) {
            var obj;
            var root = chain[i];
    
            if (root === '[]' && options.parseArrays) {
                obj = [].concat(leaf);
            } else {
                obj = options.plainObjects ? Object.create(null) : {};
                var cleanRoot = root.charAt(0) === '[' && root.charAt(root.length - 1) === ']' ? root.slice(1, -1) : root;
                var index = parseInt(cleanRoot, 10);
                if (!options.parseArrays && cleanRoot === '') {
                    obj = { 0: leaf };
                } else if (
                    !isNaN(index)
                    && root !== cleanRoot
                    && String(index) === cleanRoot
                    && index >= 0
                    && (options.parseArrays && index <= options.arrayLimit)
                ) {
                    obj = [];
                    obj[index] = leaf;
                } else {
                    obj[cleanRoot] = leaf;
                }
            }
    
            leaf = obj; // eslint-disable-line no-param-reassign
        }
    
        return leaf;
    };
    
    var parseKeys = function parseQueryStringKeys(givenKey, val, options, valuesParsed) {
        if (!givenKey) {
            return;
        }
    
        // Transform dot notation to bracket notation
        var key = options.allowDots ? givenKey.replace(/\.([^.[]+)/g, '[$1]') : givenKey;
    
        // The regex chunks
    
        var brackets = /(\[[^[\]]*])/;
        var child = /(\[[^[\]]*])/g;
    
        // Get the parent
    
        var segment = options.depth > 0 && brackets.exec(key);
        var parent = segment ? key.slice(0, segment.index) : key;
    
        // Stash the parent if it exists
    
        var keys = [];
        if (parent) {
            // If we aren't using plain objects, optionally prefix keys that would overwrite object prototype properties
            if (!options.plainObjects && has.call(Object.prototype, parent)) {
                if (!options.allowPrototypes) {
                    return;
                }
            }
    
            keys.push(parent);
        }
    
        // Loop through children appending to the array until we hit depth
    
        var i = 0;
        while (options.depth > 0 && (segment = child.exec(key)) !== null && i < options.depth) {
            i += 1;
            if (!options.plainObjects && has.call(Object.prototype, segment[1].slice(1, -1))) {
                if (!options.allowPrototypes) {
                    return;
                }
            }
            keys.push(segment[1]);
        }
    
        // If there's a remainder, just add whatever is left
    
        if (segment) {
            keys.push('[' + key.slice(segment.index) + ']');
        }
    
        return parseObject(keys, val, options, valuesParsed);
    };
    
    var normalizeParseOptions = function normalizeParseOptions(opts) {
        if (!opts) {
            return defaults;
        }
    
        if (opts.decoder !== null && opts.decoder !== undefined && typeof opts.decoder !== 'function') {
            throw new TypeError('Decoder has to be a function.');
        }
    
        if (typeof opts.charset !== 'undefined' && opts.charset !== 'utf-8' && opts.charset !== 'iso-8859-1') {
            throw new TypeError('The charset option must be either utf-8, iso-8859-1, or undefined');
        }
        var charset = typeof opts.charset === 'undefined' ? defaults.charset : opts.charset;
    
        return {
            allowDots: typeof opts.allowDots === 'undefined' ? defaults.allowDots : !!opts.allowDots,
            allowPrototypes: typeof opts.allowPrototypes === 'boolean' ? opts.allowPrototypes : defaults.allowPrototypes,
            arrayLimit: typeof opts.arrayLimit === 'number' ? opts.arrayLimit : defaults.arrayLimit,
            charset: charset,
            charsetSentinel: typeof opts.charsetSentinel === 'boolean' ? opts.charsetSentinel : defaults.charsetSentinel,
            comma: typeof opts.comma === 'boolean' ? opts.comma : defaults.comma,
            decoder: typeof opts.decoder === 'function' ? opts.decoder : defaults.decoder,
            delimiter: typeof opts.delimiter === 'string' || utils.isRegExp(opts.delimiter) ? opts.delimiter : defaults.delimiter,
            // eslint-disable-next-line no-implicit-coercion, no-extra-parens
            depth: (typeof opts.depth === 'number' || opts.depth === false) ? +opts.depth : defaults.depth,
            ignoreQueryPrefix: opts.ignoreQueryPrefix === true,
            interpretNumericEntities: typeof opts.interpretNumericEntities === 'boolean' ? opts.interpretNumericEntities : defaults.interpretNumericEntities,
            parameterLimit: typeof opts.parameterLimit === 'number' ? opts.parameterLimit : defaults.parameterLimit,
            parseArrays: opts.parseArrays !== false,
            plainObjects: typeof opts.plainObjects === 'boolean' ? opts.plainObjects : defaults.plainObjects,
            strictNullHandling: typeof opts.strictNullHandling === 'boolean' ? opts.strictNullHandling : defaults.strictNullHandling
        };
    };
    
    module.exports = function (str, opts) {
        var options = normalizeParseOptions(opts);
    
        if (str === '' || str === null || typeof str === 'undefined') {
            return options.plainObjects ? Object.create(null) : {};
        }
    
        var tempObj = typeof str === 'string' ? 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; i < keys.length; ++i) {
            var key = keys[i];
            var newObj = parseKeys(key, tempObj[key], options, typeof str === 'string');
            obj = utils.merge(obj, newObj, options);
        }
    
        return utils.compact(obj);
    };
    
    },{"./utils":5}],4:[function(require,module,exports){
    'use strict';
    
    var utils = require('./utils');
    var formats = require('./formats');
    var has = Object.prototype.hasOwnProperty;
    
    var arrayPrefixGenerators = {
        brackets: function brackets(prefix) {
            return prefix + '[]';
        },
        comma: 'comma',
        indices: function indices(prefix, key) {
            return prefix + '[' + key + ']';
        },
        repeat: function repeat(prefix) {
            return prefix;
        }
    };
    
    var isArray = Array.isArray;
    var push = Array.prototype.push;
    var pushToArray = function (arr, valueOrArray) {
        push.apply(arr, isArray(valueOrArray) ? valueOrArray : [valueOrArray]);
    };
    
    var toISO = Date.prototype.toISOString;
    
    var defaultFormat = formats['default'];
    var defaults = {
        addQueryPrefix: false,
        allowDots: false,
        charset: 'utf-8',
        charsetSentinel: false,
        delimiter: '&',
        encode: true,
        encoder: utils.encode,
        encodeValuesOnly: false,
        format: defaultFormat,
        formatter: formats.formatters[defaultFormat],
        // deprecated
        indices: false,
        serializeDate: function serializeDate(date) {
            return toISO.call(date);
        },
        skipNulls: false,
        strictNullHandling: false
    };
    
    var isNonNullishPrimitive = function isNonNullishPrimitive(v) {
        return typeof v === 'string'
            || typeof v === 'number'
            || typeof v === 'boolean'
            || typeof v === 'symbol'
            || typeof v === 'bigint';
    };
    
    var stringify = function stringify(
        object,
        prefix,
        generateArrayPrefix,
        strictNullHandling,
        skipNulls,
        encoder,
        filter,
        sort,
        allowDots,
        serializeDate,
        formatter,
        encodeValuesOnly,
        charset
    ) {
        var obj = object;
        if (typeof filter === 'function') {
            obj = filter(prefix, obj);
        } else if (obj instanceof Date) {
            obj = serializeDate(obj);
        } else if (generateArrayPrefix === 'comma' && isArray(obj)) {
            obj = utils.maybeMap(obj, function (value) {
                if (value instanceof Date) {
                    return serializeDate(value);
                }
                return value;
            }).join(',');
        }
    
        if (obj === null) {
            if (strictNullHandling) {
                return encoder && !encodeValuesOnly ? encoder(prefix, defaults.encoder, charset, 'key') : prefix;
            }
    
            obj = '';
        }
    
        if (isNonNullishPrimitive(obj) || utils.isBuffer(obj)) {
            if (encoder) {
                var keyValue = encodeValuesOnly ? prefix : encoder(prefix, defaults.encoder, charset, 'key');
                return [formatter(keyValue) + '=' + formatter(encoder(obj, defaults.encoder, charset, 'value'))];
            }
            return [formatter(prefix) + '=' + formatter(String(obj))];
        }
    
        var values = [];
    
        if (typeof obj === 'undefined') {
            return values;
        }
    
        var objKeys;
        if (isArray(filter)) {
            objKeys = filter;
        } else {
            var keys = Object.keys(obj);
            objKeys = sort ? keys.sort(sort) : keys;
        }
    
        for (var i = 0; i < objKeys.length; ++i) {
            var key = objKeys[i];
            var value = obj[key];
    
            if (skipNulls && value === null) {
                continue;
            }
    
            var keyPrefix = isArray(obj)
                ? typeof generateArrayPrefix === 'function' ? generateArrayPrefix(prefix, key) : prefix
                : prefix + (allowDots ? '.' + key : '[' + key + ']');
    
            pushToArray(values, stringify(
                value,
                keyPrefix,
                generateArrayPrefix,
                strictNullHandling,
                skipNulls,
                encoder,
                filter,
                sort,
                allowDots,
                serializeDate,
                formatter,
                encodeValuesOnly,
                charset
            ));
        }
    
        return values;
    };
    
    var normalizeStringifyOptions = function normalizeStringifyOptions(opts) {
        if (!opts) {
            return defaults;
        }
    
        if (opts.encoder !== null && opts.encoder !== undefined && typeof opts.encoder !== 'function') {
            throw new TypeError('Encoder has to be a function.');
        }
    
        var charset = opts.charset || defaults.charset;
        if (typeof opts.charset !== 'undefined' && opts.charset !== 'utf-8' && opts.charset !== 'iso-8859-1') {
            throw new TypeError('The charset option must be either utf-8, iso-8859-1, or undefined');
        }
    
        var format = formats['default'];
        if (typeof opts.format !== 'undefined') {
            if (!has.call(formats.formatters, opts.format)) {
                throw new TypeError('Unknown format option provided.');
            }
            format = opts.format;
        }
        var formatter = formats.formatters[format];
    
        var filter = defaults.filter;
        if (typeof opts.filter === 'function' || isArray(opts.filter)) {
            filter = opts.filter;
        }
    
        return {
            addQueryPrefix: typeof opts.addQueryPrefix === 'boolean' ? opts.addQueryPrefix : defaults.addQueryPrefix,
            allowDots: typeof opts.allowDots === 'undefined' ? defaults.allowDots : !!opts.allowDots,
            charset: charset,
            charsetSentinel: typeof opts.charsetSentinel === 'boolean' ? opts.charsetSentinel : defaults.charsetSentinel,
            delimiter: typeof opts.delimiter === 'undefined' ? defaults.delimiter : opts.delimiter,
            encode: typeof opts.encode === 'boolean' ? opts.encode : defaults.encode,
            encoder: typeof opts.encoder === 'function' ? opts.encoder : defaults.encoder,
            encodeValuesOnly: typeof opts.encodeValuesOnly === 'boolean' ? opts.encodeValuesOnly : defaults.encodeValuesOnly,
            filter: filter,
            formatter: formatter,
            serializeDate: typeof opts.serializeDate === 'function' ? opts.serializeDate : defaults.serializeDate,
            skipNulls: typeof opts.skipNulls === 'boolean' ? opts.skipNulls : defaults.skipNulls,
            sort: typeof opts.sort === 'function' ? opts.sort : null,
            strictNullHandling: typeof opts.strictNullHandling === 'boolean' ? opts.strictNullHandling : defaults.strictNullHandling
        };
    };
    
    module.exports = function (object, opts) {
        var obj = object;
        var options = normalizeStringifyOptions(opts);
    
        var objKeys;
        var filter;
    
        if (typeof options.filter === 'function') {
            filter = options.filter;
            obj = filter('', obj);
        } else if (isArray(options.filter)) {
            filter = options.filter;
            objKeys = filter;
        }
    
        var keys = [];
    
        if (typeof obj !== 'object' || obj === null) {
            return '';
        }
    
        var arrayFormat;
        if (opts && opts.arrayFormat in arrayPrefixGenerators) {
            arrayFormat = opts.arrayFormat;
        } else if (opts && 'indices' in opts) {
            arrayFormat = opts.indices ? 'indices' : 'repeat';
        } else {
            arrayFormat = 'indices';
        }
    
        var generateArrayPrefix = arrayPrefixGenerators[arrayFormat];
    
        if (!objKeys) {
            objKeys = Object.keys(obj);
        }
    
        if (options.sort) {
            objKeys.sort(options.sort);
        }
    
        for (var i = 0; i < objKeys.length; ++i) {
            var key = objKeys[i];
    
            if (options.skipNulls && obj[key] === null) {
                continue;
            }
            pushToArray(keys, stringify(
                obj[key],
                key,
                generateArrayPrefix,
                options.strictNullHandling,
                options.skipNulls,
                options.encode ? options.encoder : null,
                options.filter,
                options.sort,
                options.allowDots,
                options.serializeDate,
                options.formatter,
                options.encodeValuesOnly,
                options.charset
            ));
        }
    
        var joined = keys.join(options.delimiter);
        var prefix = options.addQueryPrefix === true ? '?' : '';
    
        if (options.charsetSentinel) {
            if (options.charset === 'iso-8859-1') {
                // encodeURIComponent('&#10003;'), the "numeric entity" representation of a checkmark
                prefix += 'utf8=%26%2310003%3B&';
            } else {
                // encodeURIComponent('✓')
                prefix += 'utf8=%E2%9C%93&';
            }
        }
    
        return joined.length > 0 ? prefix + joined : '';
    };
    
    },{"./formats":1,"./utils":5}],5:[function(require,module,exports){
    'use strict';
    
    var has = Object.prototype.hasOwnProperty;
    var isArray = Array.isArray;
    
    var hexTable = (function () {
        var array = [];
        for (var i = 0; i < 256; ++i) {
            array.push('%' + ((i < 16 ? '0' : '') + i.toString(16)).toUpperCase());
        }
    
        return array;
    }());
    
    var compactQueue = function compactQueue(queue) {
        while (queue.length > 1) {
            var item = queue.pop();
            var obj = item.obj[item.prop];
    
            if (isArray(obj)) {
                var compacted = [];
    
                for (var j = 0; j < obj.length; ++j) {
                    if (typeof obj[j] !== 'undefined') {
                        compacted.push(obj[j]);
                    }
                }
    
                item.obj[item.prop] = compacted;
            }
        }
    };
    
    var arrayToObject = function arrayToObject(source, options) {
        var obj = options && options.plainObjects ? Object.create(null) : {};
        for (var i = 0; i < source.length; ++i) {
            if (typeof source[i] !== 'undefined') {
                obj[i] = source[i];
            }
        }
    
        return obj;
    };
    
    var merge = function merge(target, source, options) {
        /* eslint no-param-reassign: 0 */
        if (!source) {
            return target;
        }
    
        if (typeof source !== 'object') {
            if (isArray(target)) {
                target.push(source);
            } else if (target && typeof target === 'object') {
                if ((options && (options.plainObjects || options.allowPrototypes)) || !has.call(Object.prototype, source)) {
                    target[source] = true;
                }
            } else {
                return [target, source];
            }
    
            return target;
        }
    
        if (!target || typeof target !== 'object') {
            return [target].concat(source);
        }
    
        var mergeTarget = target;
        if (isArray(target) && !isArray(source)) {
            mergeTarget = arrayToObject(target, options);
        }
    
        if (isArray(target) && isArray(source)) {
            source.forEach(function (item, i) {
                if (has.call(target, i)) {
                    var targetItem = target[i];
                    if (targetItem && typeof targetItem === 'object' && item && typeof item === 'object') {
                        target[i] = merge(targetItem, item, options);
                    } else {
                        target.push(item);
                    }
                } else {
                    target[i] = item;
                }
            });
            return target;
        }
    
        return Object.keys(source).reduce(function (acc, key) {
            var value = source[key];
    
            if (has.call(acc, key)) {
                acc[key] = merge(acc[key], value, options);
            } else {
                acc[key] = value;
            }
            return acc;
        }, mergeTarget);
    };
    
    var assign = function assignSingleSource(target, source) {
        return Object.keys(source).reduce(function (acc, key) {
            acc[key] = source[key];
            return acc;
        }, target);
    };
    
    var decode = function (str, decoder, charset) {
        var strWithoutPlus = str.replace(/\+/g, ' ');
        if (charset === 'iso-8859-1') {
            // unescape never throws, no try...catch needed:
            return strWithoutPlus.replace(/%[0-9a-f]{2}/gi, unescape);
        }
        // utf-8
        try {
            return decodeURIComponent(strWithoutPlus);
        } catch (e) {
            return strWithoutPlus;
        }
    };
    
    var encode = function encode(str, defaultEncoder, charset) {
        // 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;
        }
    
        var string = str;
        if (typeof str === 'symbol') {
            string = Symbol.prototype.toString.call(str);
        } else if (typeof str !== 'string') {
            string = String(str);
        }
    
        if (charset === 'iso-8859-1') {
            return escape(string).replace(/%u[0-9a-f]{4}/gi, function ($0) {
                return '%26%23' + parseInt($0.slice(2), 16) + '%3B';
            });
        }
    
        var out = '';
        for (var i = 0; i < string.length; ++i) {
            var c = string.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 += string.charAt(i);
                continue;
            }
    
            if (c < 0x80) {
                out = out + hexTable[c];
                continue;
            }
    
            if (c < 0x800) {
                out = out + (hexTable[0xC0 | (c >> 6)] + hexTable[0x80 | (c & 0x3F)]);
                continue;
            }
    
            if (c < 0xD800 || c >= 0xE000) {
                out = out + (hexTable[0xE0 | (c >> 12)] + hexTable[0x80 | ((c >> 6) & 0x3F)] + hexTable[0x80 | (c & 0x3F)]);
                continue;
            }
    
            i += 1;
            c = 0x10000 + (((c & 0x3FF) << 10) | (string.charCodeAt(i) & 0x3FF));
            out += hexTable[0xF0 | (c >> 18)]
                + hexTable[0x80 | ((c >> 12) & 0x3F)]
                + hexTable[0x80 | ((c >> 6) & 0x3F)]
                + hexTable[0x80 | (c & 0x3F)];
        }
    
        return out;
    };
    
    var compact = function compact(value) {
        var queue = [{ obj: { o: value }, prop: 'o' }];
        var refs = [];
    
        for (var i = 0; i < queue.length; ++i) {
            var item = queue[i];
            var obj = item.obj[item.prop];
    
            var keys = Object.keys(obj);
            for (var j = 0; j < keys.length; ++j) {
                var key = keys[j];
                var val = obj[key];
                if (typeof val === 'object' && val !== null && refs.indexOf(val) === -1) {
                    queue.push({ obj: obj, prop: key });
                    refs.push(val);
                }
            }
        }
    
        compactQueue(queue);
    
        return value;
    };
    
    var isRegExp = function isRegExp(obj) {
        return Object.prototype.toString.call(obj) === '[object RegExp]';
    };
    
    var isBuffer = function isBuffer(obj) {
        if (!obj || typeof obj !== 'object') {
            return false;
        }
    
        return !!(obj.constructor && obj.constructor.isBuffer && obj.constructor.isBuffer(obj));
    };
    
    var combine = function combine(a, b) {
        return [].concat(a, b);
    };
    
    var maybeMap = function maybeMap(val, fn) {
        if (isArray(val)) {
            var mapped = [];
            for (var i = 0; i < val.length; i += 1) {
                mapped.push(fn(val[i]));
            }
            return mapped;
        }
        return fn(val);
    };
    
    module.exports = {
        arrayToObject: arrayToObject,
        assign: assign,
        combine: combine,
        compact: compact,
        decode: decode,
        encode: encode,
        isBuffer: isBuffer,
        isRegExp: isRegExp,
        maybeMap: maybeMap,
        merge: merge
    };
    
    },{}]},{},[2])(2)
    });