43 lines
963 B
JavaScript
43 lines
963 B
JavaScript
|
"use strict";
|
||
|
|
|
||
|
|
var forEach = require("./for-each")
|
||
|
|
, isPlainObject = require("./is-plain-object")
|
||
|
|
, ensureValue = require("./valid-value")
|
||
|
|
, isArray = Array.isArray
|
||
|
|
, copy
|
||
|
|
, copyItem;
|
||
|
|
|
||
|
|
copyItem = function (value) {
|
||
|
|
var index;
|
||
|
|
if (!isPlainObject(value) && !isArray(value)) return value;
|
||
|
|
index = this[0].indexOf(value);
|
||
|
|
if (index === -1) return copy.call(this, value);
|
||
|
|
return this[1][index];
|
||
|
|
};
|
||
|
|
|
||
|
|
copy = function (source) {
|
||
|
|
var target = isArray(source) ? [] : {};
|
||
|
|
this[0].push(source);
|
||
|
|
this[1].push(target);
|
||
|
|
if (isArray(source)) {
|
||
|
|
source.forEach(function (value, key) {
|
||
|
|
target[key] = copyItem.call(this, value, key);
|
||
|
|
}, this);
|
||
|
|
} else {
|
||
|
|
forEach(
|
||
|
|
source,
|
||
|
|
function (value, key) {
|
||
|
|
target[key] = copyItem.call(this, value, key);
|
||
|
|
},
|
||
|
|
this
|
||
|
|
);
|
||
|
|
}
|
||
|
|
return target;
|
||
|
|
};
|
||
|
|
|
||
|
|
module.exports = function (source) {
|
||
|
|
var obj = Object(ensureValue(source));
|
||
|
|
if (obj !== source) return obj;
|
||
|
|
return copy.call([[], []], obj);
|
||
|
|
};
|