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"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);
};
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