node_modules

node_modules/hoek/lib/deep-equal.js

@@ -0,0 +1,315 @@
+'use strict';
+
+// Load modules
+
+
+// Declare internals
+
+const internals = {
+    arrayType: Symbol('array'),
+    bufferType: Symbol('buffer'),
+    dateType: Symbol('date'),
+    errorType: Symbol('error'),
+    genericType: Symbol('generic'),
+    mapType: Symbol('map'),
+    regexType: Symbol('regex'),
+    setType: Symbol('set'),
+    weakMapType: Symbol('weak-map'),
+    weakSetType: Symbol('weak-set'),
+    mismatched: Symbol('mismatched')
+};
+
+
+internals.typeMap = {
+    '[object Array]': internals.arrayType,
+    '[object Date]': internals.dateType,
+    '[object Error]': internals.errorType,
+    '[object Map]': internals.mapType,
+    '[object RegExp]': internals.regexType,
+    '[object Set]': internals.setType,
+    '[object WeakMap]': internals.weakMapType,
+    '[object WeakSet]': internals.weakSetType
+};
+
+
+internals.SeenEntry = class {
+
+    constructor(obj, ref) {
+
+        this.obj = obj;
+        this.ref = ref;
+    }
+
+    isSame(obj, ref) {
+
+        return this.obj === obj && this.ref === ref;
+    }
+};
+
+
+internals.getInternalType = function (obj) {
+
+    const { typeMap, bufferType, genericType } = internals;
+
+    if (obj instanceof Buffer) {
+        return bufferType;
+    }
+
+    const objName = Object.prototype.toString.call(obj);
+    return typeMap[objName] || genericType;
+};
+
+
+internals.getSharedType = function (obj, ref, checkPrototype) {
+
+    if (checkPrototype) {
+        if (Object.getPrototypeOf(obj) !== Object.getPrototypeOf(ref)) {
+            return internals.mismatched;
+        }
+
+        return internals.getInternalType(obj);
+    }
+
+    const type = internals.getInternalType(obj);
+    if (type !== internals.getInternalType(ref)) {
+        return internals.mismatched;
+    }
+
+    return type;
+};
+
+
+internals.valueOf = function (obj) {
+
+    const objValueOf = obj.valueOf;
+    if (objValueOf === undefined) {
+        return obj;
+    }
+
+    try {
+        return objValueOf.call(obj);
+    }
+    catch (err) {
+        return err;
+    }
+};
+
+
+internals.hasOwnEnumerableProperty = function (obj, key) {
+
+    return Object.prototype.propertyIsEnumerable.call(obj, key);
+};
+
+
+internals.isSetSimpleEqual = function (obj, ref) {
+
+    for (const entry of obj) {
+        if (!ref.has(entry)) {
+            return false;
+        }
+    }
+
+    return true;
+};
+
+
+internals.isDeepEqualObj = function (instanceType, obj, ref, options, seen) {
+
+    const { isDeepEqual, valueOf, hasOwnEnumerableProperty } = internals;
+    const { keys, getOwnPropertySymbols } = Object;
+
+    if (instanceType === internals.arrayType) {
+        if (options.part) {
+            // Check if any index match any other index
+
+            for (let i = 0; i < obj.length; ++i) {
+                const objValue = obj[i];
+                for (let j = 0; j < ref.length; ++j) {
+                    if (isDeepEqual(objValue, ref[j], options, seen)) {
+                        return true;
+                    }
+                }
+            }
+        }
+        else {
+            if (obj.length !== ref.length) {
+                return false;
+            }
+
+            for (let i = 0; i < obj.length; ++i) {
+                if (!isDeepEqual(obj[i], ref[i], options, seen)) {
+                    return false;
+                }
+            }
+
+            return true;
+        }
+    }
+    else if (instanceType === internals.setType) {
+        if (obj.size !== ref.size) {
+            return false;
+        }
+
+        if (!internals.isSetSimpleEqual(obj, ref)) {
+
+            // Check for deep equality
+
+            const ref2 = new Set(ref);
+            for (const objEntry of obj) {
+                if (ref2.delete(objEntry)) {
+                    continue;
+                }
+
+                let found = false;
+                for (const refEntry of ref2) {
+                    if (isDeepEqual(objEntry, refEntry, options, seen)) {
+                        ref2.delete(refEntry);
+                        found = true;
+                        break;
+                    }
+                }
+
+                if (!found) {
+                    return false;
+                }
+            }
+        }
+    }
+    else if (instanceType === internals.mapType) {
+        if (obj.size !== ref.size) {
+            return false;
+        }
+
+        for (const [key, value] of obj) {
+            if (value === undefined && !ref.has(key)) {
+                return false;
+            }
+
+            if (!isDeepEqual(value, ref.get(key), options, seen)) {
+                return false;
+            }
+        }
+    }
+    else if (instanceType === internals.errorType) {
+        // Always check name and message
+
+        if (obj.name !== ref.name || obj.message !== ref.message) {
+            return false;
+        }
+    }
+
+    // Check .valueOf()
+
+    const valueOfObj = valueOf(obj);
+    const valueOfRef = valueOf(ref);
+    if (!(obj === valueOfObj && ref === valueOfRef) &&
+        !isDeepEqual(valueOfObj, valueOfRef, options, seen)) {
+        return false;
+    }
+
+    // Check properties
+
+    const objKeys = keys(obj);
+    if (!options.part && objKeys.length !== keys(ref).length) {
+        return false;
+    }
+
+    for (let i = 0; i < objKeys.length; ++i) {
+        const key = objKeys[i];
+
+        if (!hasOwnEnumerableProperty(ref, key)) {
+            return false;
+        }
+
+        if (!isDeepEqual(obj[key], ref[key], options, seen)) {
+            return false;
+        }
+    }
+
+    // Check symbols
+
+    if (options.symbols) {
+        const objSymbols = getOwnPropertySymbols(obj);
+        const refSymbols = new Set(getOwnPropertySymbols(ref));
+
+        for (let i = 0; i < objSymbols.length; ++i) {
+            const key = objSymbols[i];
+
+            if (hasOwnEnumerableProperty(obj, key)) {
+                if (!hasOwnEnumerableProperty(ref, key)) {
+                    return false;
+                }
+
+                if (!isDeepEqual(obj[key], ref[key], options, seen)) {
+                    return false;
+                }
+            }
+            else if (hasOwnEnumerableProperty(ref, key)) {
+                return false;
+            }
+
+            refSymbols.delete(key);
+        }
+
+        for (const key of refSymbols) {
+            if (hasOwnEnumerableProperty(ref, key)) {
+                return false;
+            }
+        }
+    }
+
+    return true;
+};
+
+
+internals.isDeepEqual = function (obj, ref, options, seen) {
+
+    if (obj === ref) {                                      // Copied from Deep-eql, copyright(c) 2013 Jake Luer, jake@alogicalparadox.com, MIT Licensed, https://github.com/chaijs/deep-eql
+        return obj !== 0 || 1 / obj === 1 / ref;
+    }
+
+    const type = typeof obj;
+
+    if (type !== typeof ref) {
+        return false;
+    }
+
+    if (type !== 'object' ||
+        obj === null ||
+        ref === null) {
+
+        return obj !== obj && ref !== ref;                  // NaN
+    }
+
+    const instanceType = internals.getSharedType(obj, ref, !!options.prototype);
+    switch (instanceType) {
+        case internals.bufferType:
+            return Buffer.prototype.equals.call(obj, ref);
+        case internals.regexType:
+            return obj.toString() === ref.toString();
+        case internals.mismatched:
+            return false;
+    }
+
+    for (let i = seen.length - 1; i >= 0; --i) {
+        if (seen[i].isSame(obj, ref)) {
+            return true;                                    // If previous comparison failed, it would have stopped execution
+        }
+    }
+
+    seen.push(new internals.SeenEntry(obj, ref));
+    try {
+        return !!internals.isDeepEqualObj(instanceType, obj, ref, options, seen);
+    }
+    finally {
+        seen.pop();
+    }
+};
+
+
+module.exports = function (obj, ref, options) {
+
+    options = options || { prototype: true };
+
+    return !!internals.isDeepEqual(obj, ref, options, []);
+};

node_modules/hoek/lib/escape.js

@@ -0,0 +1,127 @@
+'use strict';
+
+// Declare internals
+
+const internals = {};
+
+
+exports.escapeHtml = function (input) {
+
+    if (!input) {
+        return '';
+    }
+
+    let escaped = '';
+
+    for (let i = 0; i < input.length; ++i) {
+
+        const charCode = input.charCodeAt(i);
+
+        if (internals.isSafe(charCode)) {
+            escaped += input[i];
+        }
+        else {
+            escaped += internals.escapeHtmlChar(charCode);
+        }
+    }
+
+    return escaped;
+};
+
+
+exports.escapeJson = function (input) {
+
+    if (!input) {
+        return '';
+    }
+
+    const lessThan = 0x3C;
+    const greaterThan = 0x3E;
+    const andSymbol = 0x26;
+    const lineSeperator = 0x2028;
+
+    // replace method
+    let charCode;
+    return input.replace(/[<>&\u2028\u2029]/g, (match) => {
+
+        charCode = match.charCodeAt(0);
+
+        if (charCode === lessThan) {
+            return '\\u003c';
+        }
+
+        if (charCode === greaterThan) {
+            return '\\u003e';
+        }
+
+        if (charCode === andSymbol) {
+            return '\\u0026';
+        }
+
+        if (charCode === lineSeperator) {
+            return '\\u2028';
+        }
+
+        return '\\u2029';
+    });
+};
+
+
+internals.escapeHtmlChar = function (charCode) {
+
+    const namedEscape = internals.namedHtml[charCode];
+    if (typeof namedEscape !== 'undefined') {
+        return namedEscape;
+    }
+
+    if (charCode >= 256) {
+        return '&#' + charCode + ';';
+    }
+
+    const hexValue = Buffer.from(String.fromCharCode(charCode), 'ascii').toString('hex');
+    return `&#x${hexValue};`;
+};
+
+
+internals.isSafe = function (charCode) {
+
+    return (typeof internals.safeCharCodes[charCode] !== 'undefined');
+};
+
+
+internals.namedHtml = {
+    '38': '&amp;',
+    '60': '&lt;',
+    '62': '&gt;',
+    '34': '&quot;',
+    '160': '&nbsp;',
+    '162': '&cent;',
+    '163': '&pound;',
+    '164': '&curren;',
+    '169': '&copy;',
+    '174': '&reg;'
+};
+
+
+internals.safeCharCodes = (function () {
+
+    const safe = {};
+
+    for (let i = 32; i < 123; ++i) {
+
+        if ((i >= 97) ||                    // a-z
+            (i >= 65 && i <= 90) ||         // A-Z
+            (i >= 48 && i <= 57) ||         // 0-9
+            i === 32 ||                     // space
+            i === 46 ||                     // .
+            i === 44 ||                     // ,
+            i === 45 ||                     // -
+            i === 58 ||                     // :
+            i === 95) {                     // _
+
+            safe[i] = null;
+        }
+    }
+
+    return safe;
+}());

node_modules/hoek/lib/index.js

@@ -0,0 +1,686 @@
+'use strict';
+
+// Load modules
+
+const Assert = require('assert');
+const Crypto = require('crypto');
+const Path = require('path');
+
+const DeepEqual = require('./deep-equal');
+const Escape = require('./escape');
+
+
+// Declare internals
+
+const internals = {};
+
+
+// Deep object or array comparison
+
+exports.deepEqual = DeepEqual;
+
+
+// Clone object or array
+
+exports.clone = function (obj, options = {}, _seen = null) {
+
+    if (typeof obj !== 'object' ||
+        obj === null) {
+
+        return obj;
+    }
+
+    const seen = _seen || new Map();
+
+    const lookup = seen.get(obj);
+    if (lookup) {
+        return lookup;
+    }
+
+    let newObj;
+    let cloneDeep = false;
+    const isArray = Array.isArray(obj);
+
+    if (!isArray) {
+        if (Buffer.isBuffer(obj)) {
+            newObj = Buffer.from(obj);
+        }
+        else if (obj instanceof Date) {
+            newObj = new Date(obj.getTime());
+        }
+        else if (obj instanceof RegExp) {
+            newObj = new RegExp(obj);
+        }
+        else {
+            if (options.prototype !== false) {          // Defaults to true
+                const proto = Object.getPrototypeOf(obj);
+                if (proto &&
+                    proto.isImmutable) {
+
+                    newObj = obj;
+                }
+                else {
+                    newObj = Object.create(proto);
+                    cloneDeep = true;
+                }
+            }
+            else {
+                newObj = {};
+                cloneDeep = true;
+            }
+        }
+    }
+    else {
+        newObj = [];
+        cloneDeep = true;
+    }
+
+    seen.set(obj, newObj);
+
+    if (cloneDeep) {
+        const keys = internals.keys(obj, options);
+        for (let i = 0; i < keys.length; ++i) {
+            const key = keys[i];
+
+            if (isArray && key === 'length') {
+                continue;
+            }
+
+            const descriptor = Object.getOwnPropertyDescriptor(obj, key);
+            if (descriptor &&
+                (descriptor.get ||
+                    descriptor.set)) {
+
+                Object.defineProperty(newObj, key, descriptor);
+            }
+            else {
+                Object.defineProperty(newObj, key, {
+                    enumerable: descriptor ? descriptor.enumerable : true,
+                    writable: true,
+                    configurable: true,
+                    value: exports.clone(obj[key], options, seen)
+                });
+            }
+        }
+
+        if (isArray) {
+            newObj.length = obj.length;
+        }
+    }
+
+    return newObj;
+};
+
+
+internals.keys = function (obj, options = {}) {
+
+    return options.symbols ? Reflect.ownKeys(obj) : Object.getOwnPropertyNames(obj);
+};
+
+
+// Merge all the properties of source into target, source wins in conflict, and by default null and undefined from source are applied
+
+exports.merge = function (target, source, isNullOverride /* = true */, isMergeArrays /* = true */) {
+
+    exports.assert(target && typeof target === 'object', 'Invalid target value: must be an object');
+    exports.assert(source === null || source === undefined || typeof source === 'object', 'Invalid source value: must be null, undefined, or an object');
+
+    if (!source) {
+        return target;
+    }
+
+    if (Array.isArray(source)) {
+        exports.assert(Array.isArray(target), 'Cannot merge array onto an object');
+        if (isMergeArrays === false) {                                                  // isMergeArrays defaults to true
+            target.length = 0;                                                          // Must not change target assignment
+        }
+
+        for (let i = 0; i < source.length; ++i) {
+            target.push(exports.clone(source[i]));
+        }
+
+        return target;
+    }
+
+    const keys = internals.keys(source);
+    for (let i = 0; i < keys.length; ++i) {
+        const key = keys[i];
+        if (key === '__proto__' ||
+            !Object.prototype.propertyIsEnumerable.call(source, key)) {
+
+            continue;
+        }
+
+        const value = source[key];
+        if (value &&
+            typeof value === 'object') {
+
+            if (!target[key] ||
+                typeof target[key] !== 'object' ||
+                (Array.isArray(target[key]) !== Array.isArray(value)) ||
+                value instanceof Date ||
+                Buffer.isBuffer(value) ||
+                value instanceof RegExp) {
+
+                target[key] = exports.clone(value);
+            }
+            else {
+                exports.merge(target[key], value, isNullOverride, isMergeArrays);
+            }
+        }
+        else {
+            if (value !== null &&
+                value !== undefined) {                              // Explicit to preserve empty strings
+
+                target[key] = value;
+            }
+            else if (isNullOverride !== false) {                    // Defaults to true
+                target[key] = value;
+            }
+        }
+    }
+
+    return target;
+};
+
+
+// Apply options to a copy of the defaults
+
+exports.applyToDefaults = function (defaults, options, isNullOverride) {
+
+    exports.assert(defaults && typeof defaults === 'object', 'Invalid defaults value: must be an object');
+    exports.assert(!options || options === true || typeof options === 'object', 'Invalid options value: must be true, falsy or an object');
+
+    if (!options) {                                                 // If no options, return null
+        return null;
+    }
+
+    const copy = exports.clone(defaults);
+
+    if (options === true) {                                         // If options is set to true, use defaults
+        return copy;
+    }
+
+    return exports.merge(copy, options, isNullOverride === true, false);
+};
+
+
+// Clone an object except for the listed keys which are shallow copied
+
+exports.cloneWithShallow = function (source, keys, options) {
+
+    if (!source ||
+        typeof source !== 'object') {
+
+        return source;
+    }
+
+    const storage = internals.store(source, keys);    // Move shallow copy items to storage
+    const copy = exports.clone(source, options);      // Deep copy the rest
+    internals.restore(copy, source, storage);         // Shallow copy the stored items and restore
+    return copy;
+};
+
+
+internals.store = function (source, keys) {
+
+    const storage = new Map();
+    for (let i = 0; i < keys.length; ++i) {
+        const key = keys[i];
+        const value = exports.reach(source, key);
+        if (typeof value === 'object' ||
+            typeof value === 'function') {
+
+            storage.set(key, value);
+            internals.reachSet(source, key, undefined);
+        }
+    }
+
+    return storage;
+};
+
+
+internals.restore = function (copy, source, storage) {
+
+    for (const [key, value] of storage) {
+        internals.reachSet(copy, key, value);
+        internals.reachSet(source, key, value);
+    }
+};
+
+
+internals.reachSet = function (obj, key, value) {
+
+    const path = Array.isArray(key) ? key : key.split('.');
+    let ref = obj;
+    for (let i = 0; i < path.length; ++i) {
+        const segment = path[i];
+        if (i + 1 === path.length) {
+            ref[segment] = value;
+        }
+
+        ref = ref[segment];
+    }
+};
+
+
+// Apply options to defaults except for the listed keys which are shallow copied from option without merging
+
+exports.applyToDefaultsWithShallow = function (defaults, options, keys) {
+
+    exports.assert(defaults && typeof defaults === 'object', 'Invalid defaults value: must be an object');
+    exports.assert(!options || options === true || typeof options === 'object', 'Invalid options value: must be true, falsy or an object');
+    exports.assert(keys && Array.isArray(keys), 'Invalid keys');
+
+    if (!options) {                                                 // If no options, return null
+        return null;
+    }
+
+    const copy = exports.cloneWithShallow(defaults, keys);
+
+    if (options === true) {                                         // If options is set to true, use defaults
+        return copy;
+    }
+
+    const storage = internals.store(options, keys);     // Move shallow copy items to storage
+    exports.merge(copy, options, false, false);         // Deep copy the rest
+    internals.restore(copy, options, storage);          // Shallow copy the stored items and restore
+    return copy;
+};
+
+
+// Find the common unique items in two arrays
+
+exports.intersect = function (array1, array2, justFirst) {
+
+    if (!array1 ||
+        !array2) {
+
+        return (justFirst ? null : []);
+    }
+
+    const common = [];
+    const hash = (Array.isArray(array1) ? new Set(array1) : array1);
+    const found = new Set();
+    for (const value of array2) {
+        if (internals.has(hash, value) &&
+            !found.has(value)) {
+
+            if (justFirst) {
+                return value;
+            }
+
+            common.push(value);
+            found.add(value);
+        }
+    }
+
+    return (justFirst ? null : common);
+};
+
+
+internals.has = function (ref, key) {
+
+    if (typeof ref.has === 'function') {
+        return ref.has(key);
+    }
+
+    return ref[key] !== undefined;
+};
+
+
+// Test if the reference contains the values
+
+exports.contain = function (ref, values, options = {}) {        // options: { deep, once, only, part, symbols }
+
+    /*
+        string -> string(s)
+        array -> item(s)
+        object -> key(s)
+        object -> object (key:value)
+    */
+
+    let valuePairs = null;
+    if (typeof ref === 'object' &&
+        typeof values === 'object' &&
+        !Array.isArray(ref) &&
+        !Array.isArray(values)) {
+
+        valuePairs = values;
+        const symbols = Object.getOwnPropertySymbols(values).filter(Object.prototype.propertyIsEnumerable.bind(values));
+        values = [...Object.keys(values), ...symbols];
+    }
+    else {
+        values = [].concat(values);
+    }
+
+    exports.assert(typeof ref === 'string' || typeof ref === 'object', 'Reference must be string or an object');
+    exports.assert(values.length, 'Values array cannot be empty');
+
+    let compare;
+    let compareFlags;
+    if (options.deep) {
+        compare = exports.deepEqual;
+
+        const hasOnly = options.hasOwnProperty('only');
+        const hasPart = options.hasOwnProperty('part');
+
+        compareFlags = {
+            prototype: hasOnly ? options.only : hasPart ? !options.part : false,
+            part: hasOnly ? !options.only : hasPart ? options.part : false
+        };
+    }
+    else {
+        compare = (a, b) => a === b;
+    }
+
+    let misses = false;
+    const matches = new Array(values.length);
+    for (let i = 0; i < matches.length; ++i) {
+        matches[i] = 0;
+    }
+
+    if (typeof ref === 'string') {
+        let pattern = '(';
+        for (let i = 0; i < values.length; ++i) {
+            const value = values[i];
+            exports.assert(typeof value === 'string', 'Cannot compare string reference to non-string value');
+            pattern += (i ? '|' : '') + exports.escapeRegex(value);
+        }
+
+        const regex = new RegExp(pattern + ')', 'g');
+        const leftovers = ref.replace(regex, ($0, $1) => {
+
+            const index = values.indexOf($1);
+            ++matches[index];
+            return '';          // Remove from string
+        });
+
+        misses = !!leftovers;
+    }
+    else if (Array.isArray(ref)) {
+        const onlyOnce = !!(options.only && options.once);
+        if (onlyOnce && ref.length !== values.length) {
+            return false;
+        }
+
+        for (let i = 0; i < ref.length; ++i) {
+            let matched = false;
+            for (let j = 0; j < values.length && matched === false; ++j) {
+                if (!onlyOnce || matches[j] === 0) {
+                    matched = compare(values[j], ref[i], compareFlags) && j;
+                }
+            }
+
+            if (matched !== false) {
+                ++matches[matched];
+            }
+            else {
+                misses = true;
+            }
+        }
+    }
+    else {
+        const keys = internals.keys(ref, options);
+        for (let i = 0; i < keys.length; ++i) {
+            const key = keys[i];
+            const pos = values.indexOf(key);
+            if (pos !== -1) {
+                if (valuePairs &&
+                    !compare(valuePairs[key], ref[key], compareFlags)) {
+
+                    return false;
+                }
+
+                ++matches[pos];
+            }
+            else {
+                misses = true;
+            }
+        }
+    }
+
+    if (options.only) {
+        if (misses || !options.once) {
+            return !misses;
+        }
+    }
+
+    let result = false;
+    for (let i = 0; i < matches.length; ++i) {
+        result = result || !!matches[i];
+        if ((options.once && matches[i] > 1) ||
+            (!options.part && !matches[i])) {
+
+            return false;
+        }
+    }
+
+    return result;
+};
+
+
+// Flatten array
+
+exports.flatten = function (array, target) {
+
+    const result = target || [];
+
+    for (let i = 0; i < array.length; ++i) {
+        if (Array.isArray(array[i])) {
+            exports.flatten(array[i], result);
+        }
+        else {
+            result.push(array[i]);
+        }
+    }
+
+    return result;
+};
+
+
+// Convert an object key chain string ('a.b.c') to reference (object[a][b][c])
+
+exports.reach = function (obj, chain, options) {
+
+    if (chain === false ||
+        chain === null ||
+        typeof chain === 'undefined') {
+
+        return obj;
+    }
+
+    options = options || {};
+    if (typeof options === 'string') {
+        options = { separator: options };
+    }
+
+    const isChainArray = Array.isArray(chain);
+
+    exports.assert(!isChainArray || !options.separator, 'Separator option no valid for array-based chain');
+
+    const path = isChainArray ? chain : chain.split(options.separator || '.');
+    let ref = obj;
+    for (let i = 0; i < path.length; ++i) {
+        let key = path[i];
+
+        if (Array.isArray(ref)) {
+            const number = Number(key);
+
+            if (Number.isInteger(number) && number < 0) {
+                key = ref.length + number;
+            }
+        }
+
+        if (!ref ||
+            !((typeof ref === 'object' || typeof ref === 'function') && key in ref) ||
+            (typeof ref !== 'object' && options.functions === false)) {         // Only object and function can have properties
+
+            exports.assert(!options.strict || i + 1 === path.length, 'Missing segment', key, 'in reach path ', chain);
+            exports.assert(typeof ref === 'object' || options.functions === true || typeof ref !== 'function', 'Invalid segment', key, 'in reach path ', chain);
+            ref = options.default;
+            break;
+        }
+
+        ref = ref[key];
+    }
+
+    return ref;
+};
+
+
+exports.reachTemplate = function (obj, template, options) {
+
+    return template.replace(/{([^}]+)}/g, ($0, chain) => {
+
+        const value = exports.reach(obj, chain, options);
+        return (value === undefined || value === null ? '' : value);
+    });
+};
+
+
+exports.assert = function (condition, ...args) {
+
+    if (condition) {
+        return;
+    }
+
+    if (args.length === 1 && args[0] instanceof Error) {
+        throw args[0];
+    }
+
+    const msgs = args
+        .filter((arg) => arg !== '')
+        .map((arg) => {
+
+            return typeof arg === 'string' ? arg : arg instanceof Error ? arg.message : exports.stringify(arg);
+        });
+
+    throw new Assert.AssertionError({
+        message: msgs.join(' ') || 'Unknown error',
+        actual: false,
+        expected: true,
+        operator: '==',
+        stackStartFunction: exports.assert
+    });
+};
+
+
+exports.Bench = function () {
+
+    this.ts = 0;
+    this.reset();
+};
+
+
+exports.Bench.prototype.reset = function () {
+
+    this.ts = exports.Bench.now();
+};
+
+
+exports.Bench.prototype.elapsed = function () {
+
+    return exports.Bench.now() - this.ts;
+};
+
+
+exports.Bench.now = function () {
+
+    const ts = process.hrtime();
+    return (ts[0] * 1e3) + (ts[1] / 1e6);
+};
+
+
+// Escape string for Regex construction
+
+exports.escapeRegex = function (string) {
+
+    // Escape ^$.*+-?=!:|\/()[]{},
+    return string.replace(/[\^\$\.\*\+\-\?\=\!\:\|\\\/\(\)\[\]\{\}\,]/g, '\\$&');
+};
+
+
+// Escape attribute value for use in HTTP header
+
+exports.escapeHeaderAttribute = function (attribute) {
+
+    // Allowed value characters: !#$%&'()*+,-./:;<=>?@[]^_`{|}~ and space, a-z, A-Z, 0-9, \, "
+
+    exports.assert(/^[ \w\!#\$%&'\(\)\*\+,\-\.\/\:;<\=>\?@\[\]\^`\{\|\}~\"\\]*$/.test(attribute), 'Bad attribute value (' + attribute + ')');
+
+    return attribute.replace(/\\/g, '\\\\').replace(/\"/g, '\\"');                             // Escape quotes and slash
+};
+
+
+exports.escapeHtml = function (string) {
+
+    return Escape.escapeHtml(string);
+};
+
+
+exports.escapeJson = function (string) {
+
+    return Escape.escapeJson(string);
+};
+
+
+exports.once = function (method) {
+
+    if (method._hoekOnce) {
+        return method;
+    }
+
+    let once = false;
+    const wrapped = function (...args) {
+
+        if (!once) {
+            once = true;
+            method(...args);
+        }
+    };
+
+    wrapped._hoekOnce = true;
+    return wrapped;
+};
+
+
+exports.ignore = function () { };
+
+
+exports.uniqueFilename = function (path, extension) {
+
+    if (extension) {
+        extension = extension[0] !== '.' ? '.' + extension : extension;
+    }
+    else {
+        extension = '';
+    }
+
+    path = Path.resolve(path);
+    const name = [Date.now(), process.pid, Crypto.randomBytes(8).toString('hex')].join('-') + extension;
+    return Path.join(path, name);
+};
+
+
+exports.stringify = function (...args) {
+
+    try {
+        return JSON.stringify.apply(null, args);
+    }
+    catch (err) {
+        return '[Cannot display object: ' + err.message + ']';
+    }
+};
+
+
+exports.wait = function (timeout) {
+
+    return new Promise((resolve) => setTimeout(resolve, timeout));
+};
+
+
+exports.block = function () {
+
+    return new Promise(exports.ignore);
+};