Package Exports

deepcopy
deepcopy/index.js

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (deepcopy) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

deepcopy

deep copy module for node.js

Installation

$ npm install deepcopy

Usage

var deepcopy = require('deepcopy');

var source = {
  data: {
    num: 123,
    str: 'a',
    now: new Date,
    reg: /node/ig,
    arr: [ true, false, null, undefined ],
    obj: { aaa: 1, bbb: 2, ccc: 3 }
  }
};

var shallow = source,
    deep = deepcopy(source);

delete source.data;

console.dir(source);
// {}
console.dir(shallow);
// {}
console.dir(deep);
// { data:
//    { num: 123,
//      str: 'a',
//      now: Sun Jan 27 2013 23:31:12 GMT+0900 (JST),
//      reg: /node/gi,
//      arr: [ true, false, null, undefined ],
//      obj: { aaa: 1, bbb: 2, ccc: 3 } } }

var deepcopy = require('deepcopy');

var a = {},
    b = {};

a.to = b;
b.to = a;

try {
  deepcopy(a);
} catch (e) {
  console.error(e);  // [RangeError: Maximum call stack size exceeded]
}

Functions

deepcopy(targetObject)

targetObject any types - copy target
return targetObject types - copied value

return deep copy if targetObject is Date, RegExp or primitive types. return shallow copy if targetObject is function.

this function throws RangeError if targetObject has circular reference.

Test

$ npm install
$ npm test

License

The MIT License. Please see LICENSE file.