You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
36 lines
934 B
36 lines
934 B
2 years ago
|
"use strict";
|
||
|
|
|
||
|
|
var forEach = require("./for-each")
|
||
|
|
, isPlainObject = require("./is-plain-object")
|
||
|
|
, ensureValue = require("./valid-value")
|
||
|
|
, isArray = Array.isArray;
|
||
|
|
|
||
|
|
var copyValue = function (value, ancestors, ancestorsCopy) {
|
||
|
|
var mode;
|
||
|
|
if (isPlainObject(value)) mode = "object";
|
||
|
|
else if (isArray(value)) mode = "array";
|
||
|
|
if (!mode) return value;
|
||
|
|
|
||
|
|
var copy = ancestorsCopy[ancestors.indexOf(value)];
|
||
|
|
if (copy) return copy;
|
||
|
|
copy = mode === "object" ? {} : [];
|
||
|
|
|
||
|
|
ancestors.push(value);
|
||
|
|
ancestorsCopy.push(copy);
|
||
|
|
if (mode === "object") {
|
||
|
|
forEach(value, function (item, key) {
|
||
|
|
copy[key] = copyValue(item, ancestors, ancestorsCopy);
|
||
|
|
});
|
||
|
|
} else {
|
||
|
|
value.forEach(function (item, index) {
|
||
|
|
copy[index] = copyValue(item, ancestors, ancestorsCopy);
|
||
|
|
});
|
||
|
|
}
|
||
|
|
ancestors.pop();
|
||
|
|
ancestorsCopy.pop();
|
||
|
|
|
||
|
|
return copy;
|
||
|
|
};
|
||
|
|
|
||
|
|
module.exports = function (source) { return copyValue(ensureValue(source), [], []); };
|