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strict';\n\nvar has = Object.prototype.hasOwnProperty;\n\nvar hexTable = (function () {\n    var array = [];\n    for (var i = 0; i < 256; ++i) {\n        array.push('%' + ((i < 16 ? '0' : '') + i.toString(16)).toUpperCase());\n    }\n\n    return array;\n}());\n\nvar compactQueue = function compactQueue(queue) {\n    var obj;\n\n    while (queue.length) {\n        var item = queue.pop();\n        obj = item.obj[item.prop];\n\n        if (Array.isArray(obj)) {\n            var compacted = [];\n\n            for (var j = 0; j < obj.length; ++j) {\n                if (typeof obj[j] !== 'undefined') {\n                    compacted.push(obj[j]);\n                }\n            }\n\n            item.obj[item.prop] = compacted;\n        }\n    }\n\n    return obj;\n};\n\nvar arrayToObject = function arrayToObject(source, options) {\n    var obj = options && options.plainObjects ? Object.create(null) : {};\n    for (var i = 0; i < source.length; ++i) {\n        if (typeof source[i] !== 'undefined') {\n            obj[i] = source[i];\n        }\n    }\n\n    return obj;\n};\n\nvar merge = function merge(target, source, options) {\n    if (!source) {\n        return target;\n    }\n\n    if (typeof source !== 'object') {\n        if (Array.isArray(target)) {\n            target.push(source);\n        } else if (typeof target === 'object') {\n            if (options.plainObjects || options.allowPrototypes || !has.call(Object.prototype, source)) {\n                target[source] = true;\n            }\n        } else {\n            return [target, source];\n        }\n\n        return target;\n    }\n\n    if (typeof target !== 'object') {\n        return [target].concat(source);\n    }\n\n    var mergeTarget = target;\n    if (Array.isArray(target) && !Array.isArray(source)) {\n        mergeTarget = arrayToObject(target, options);\n    }\n\n    if (Array.isArray(target) && Array.isArray(source)) {\n        source.forEach(function (item, i) {\n            if (has.call(target, i)) {\n                if (target[i] && typeof target[i] === 'object') {\n                    target[i] = merge(target[i], item, options);\n                } else {\n                    target.push(item);\n                }\n            } else {\n                target[i] = item;\n            }\n        });\n        return target;\n    }\n\n    return Object.keys(source).reduce(function (acc, key) {\n        var value = source[key];\n\n        if (has.call(acc, key)) {\n            acc[key] = merge(acc[key], value, options);\n        } else {\n            acc[key] = value;\n        }\n        return acc;\n    }, mergeTarget);\n};\n\nvar assign = function assignSingleSource(target, source) {\n    return Object.keys(source).reduce(function (acc, key) {\n        acc[key] = source[key];\n        return acc;\n    }, target);\n};\n\nvar decode = function (str) {\n    try {\n        return decodeURIComponent(str.replace(/\\+/g, ' '));\n    } catch (e) {\n        return str;\n    }\n};\n\nvar encode = function encode(str) {\n    // This code was originally written by Brian White (mscdex) for the io.js core querystring library.\n    // It has been adapted here for stricter adherence to RFC 3986\n    if (str.length === 0) {\n        return str;\n    }\n\n    var string = typeof str === 'string' ? str : String(str);\n\n    var out = '';\n    for (var i = 0; i < string.length; ++i) {\n        var c = string.charCodeAt(i);\n\n        if (\n            c === 0x2D // -\n            || c === 0x2E // .\n            || c === 0x5F // _\n            || c === 0x7E // ~\n            || (c >= 0x30 && c <= 0x39) // 0-9\n            || (c >= 0x41 && c <= 0x5A) // a-z\n            || (c >= 0x61 && c <= 0x7A) // A-Z\n        ) {\n            out += string.charAt(i);\n            continue;\n        }\n\n        if (c < 0x80) {\n            out = out + hexTable[c];\n            continue;\n        }\n\n        if (c < 0x800) {\n            out = out + (hexTable[0xC0 | (c >> 6)] + hexTable[0x80 | (c & 0x3F)]);\n            continue;\n        }\n\n        if (c < 0xD800 || c >= 0xE000) {\n            out = out + (hexTable[0xE0 | (c >> 12)] + hexTable[0x80 | ((c >> 6) & 0x3F)] + hexTable[0x80 | (c & 0x3F)]);\n            continue;\n        }\n\n        i += 1;\n        c = 0x10000 + (((c & 0x3FF) << 10) | (string.charCodeAt(i) & 0x3FF));\n        out += hexTable[0xF0 | (c >> 18)]\n            + hexTable[0x80 | ((c >> 12) & 0x3F)]\n            + hexTable[0x80 | ((c >> 6) & 0x3F)]\n            + hexTable[0x80 | (c & 0x3F)];\n    }\n\n    return out;\n};\n\nvar compact = function compact(value) {\n    var queue = [{ obj: { o: value }, prop: 'o' }];\n    var refs = [];\n\n    for (var i = 0; i < queue.length; ++i) {\n        var item = queue[i];\n        var obj = item.obj[item.prop];\n\n        var keys = Object.keys(obj);\n        for (var j = 0; j < keys.length; ++j) {\n            var key = keys[j];\n            var val = obj[key];\n            if (typeof val === 'object' && val !== null && refs.indexOf(val) === -1) {\n                queue.push({ obj: obj, prop: key });\n                refs.push(val);\n            }\n        }\n    }\n\n    return compactQueue(queue);\n};\n\nvar isRegExp = function isRegExp(obj) {\n    return Object.prototype.toString.call(obj) === '[object RegExp]';\n};\n\nvar isBuffer = function isBuffer(obj) {\n    if (obj === null || typeof obj === 'undefined') {\n        return false;\n    }\n\n    return !!(obj.constructor && obj.constructor.isBuffer && obj.constructor.isBuffer(obj));\n};\n\nmodule.exports = {\n    arrayToObject: arrayToObject,\n    assign: assign,\n    compact: compact,\n    decode: decode,\n    encode: encode,\n    isBuffer: isBuffer,\n    isRegExp: isRegExp,\n    merge: merge\n};\n"]},"metadata":{},"sourceType":"script"}