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keksAccountGUI/node_modulesOLD/@hapi/hoek/lib/index.js
2019-08-11 20:48:02 +02:00

706 lines
18 KiB
JavaScript
Executable file

'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');
const Types = require('./types');
// Declare internals
const internals = {
needsProtoHack: new Set([Types.set, Types.map, Types.weakSet, Types.weakMap])
};
// 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;
}
const baseProto = Types.getInternalProto(obj);
let newObj;
switch (baseProto) {
case Types.buffer:
return Buffer.from(obj);
case Types.date:
return new Date(obj.getTime());
case Types.regex:
return new RegExp(obj);
case Types.array:
newObj = [];
break;
default:
if (options.prototype !== false) { // Defaults to true
const proto = Object.getPrototypeOf(obj);
if (proto &&
proto.isImmutable) {
return obj;
}
if (internals.needsProtoHack.has(baseProto)) {
newObj = new proto.constructor();
if (proto !== baseProto) {
Object.setPrototypeOf(newObj, proto);
}
}
else {
newObj = Object.create(proto);
}
}
else if (internals.needsProtoHack.has(baseProto)) {
newObj = new baseProto.constructor();
}
else {
newObj = {};
}
}
seen.set(obj, newObj); // Set seen, since obj could recurse
if (baseProto === Types.set) {
for (const value of obj) {
newObj.add(exports.clone(value, options, seen));
}
}
else if (baseProto === Types.map) {
for (const [key, value] of obj) {
newObj.set(key, exports.clone(value, options, seen));
}
}
const keys = internals.keys(obj, options);
for (let i = 0; i < keys.length; ++i) {
const key = keys[i];
if (baseProto === Types.array &&
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 (baseProto === Types.array) {
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) {
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) {
target[key] = value;
}
}
}
return target;
};
// Apply options to a copy of the defaults
exports.applyToDefaults = function (defaults, options, isNullOverride = false) {
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, 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 = false) {
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.only !== undefined;
const hasPart = options.part !== undefined;
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 ||
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, ($0, chain) => {
const value = exports.reach(obj, chain, options);
return (value === undefined || value === null ? '' : value);
});
};
exports.assert = function (condition, ...args) {
if (condition) {
return;
}
if (args.length === 1 && args[0] instanceof Error) {
throw args[0];
}
const msgs = args
.filter((arg) => arg !== '')
.map((arg) => {
return typeof arg === 'string' ? arg : arg instanceof Error ? arg.message : exports.stringify(arg);
});
throw new Assert.AssertionError({
message: msgs.join(' ') || 'Unknown error',
actual: false,
expected: true,
operator: '==',
stackStartFunction: exports.assert
});
};
exports.Bench = class {
constructor() {
this.ts = 0;
this.reset();
}
reset() {
this.ts = exports.Bench.now();
}
elapsed() {
return exports.Bench.now() - this.ts;
}
static now() {
const ts = process.hrtime();
return (ts[0] * 1e3) + (ts[1] / 1e6);
}
};
// Escape string for Regex construction
exports.escapeRegex = function (string) {
// Escape ^$.*+-?=!:|\/()[]{},
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);
};