This repository has been archived on 2024-07-27. You can view files and clone it, but cannot push or open issues or pull requests.
keksAccountGUI/node_modulesOLD/@hapi/hoek/lib/deep-equal.js

288 lines
6.6 KiB
JavaScript
Raw Normal View History

2019-08-11 18:48:02 +00:00
'use strict';
// Load modules
const Types = require('./types');
// Declare internals
const internals = {
mismatched: null
};
module.exports = function (obj, ref, options) {
options = { prototype: true, ...options };
return !!internals.isDeepEqual(obj, ref, options, []);
};
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 Types.buffer:
return Buffer.prototype.equals.call(obj, ref);
case Types.promise:
return obj === ref;
case Types.regex:
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();
}
};
internals.getSharedType = function (obj, ref, checkPrototype) {
if (checkPrototype) {
if (Object.getPrototypeOf(obj) !== Object.getPrototypeOf(ref)) {
return internals.mismatched;
}
return Types.getInternalProto(obj);
}
const type = Types.getInternalProto(obj);
if (type !== Types.getInternalProto(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 === Types.array) {
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 === Types.set) {
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 === Types.map) {
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 === Types.error) {
// 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.SeenEntry = class {
constructor(obj, ref) {
this.obj = obj;
this.ref = ref;
}
isSame(obj, ref) {
return this.obj === obj && this.ref === ref;
}
};