deep-extend

Deep Extend

Recursive object extending.

Install

$ npm install deep-extend

Usage

var deepExtend = require('deep-extend');
var obj1 = {
  a: 1,
  b: 2,
  d: {
    a: 1,
    b: [],
    c: { test1: 123, test2: 321 }
  },
  f: 5,
  g: 123,
  i: 321,
  j: [1, 2]
};
var obj2 = {
  b: 3,
  c: 5,
  d: {
    b: { first: 'one', second: 'two' },
    c: { test2: 222 }
  },
  e: { one: 1, two: 2 },
  f: [],
  g: (void 0),
  h: /abc/g,
  i: null,
  j: [3, 4]
};

deepExtend(obj1, obj2);

console.log(obj1);
/*
{ a: 1,
  b: 3,
  d:
   { a: 1,
     b: { first: 'one', second: 'two' },
     c: { test1: 123, test2: 222 } },
  f: [],
  g: undefined,
  c: 5,
  e: { one: 1, two: 2 },
  h: /abc/g,
  i: null,
  j: [3, 4] }
*/

Unit testing

$ npm test

Changelog

CHANGELOG.md

Any issues?

Please, report about issues here.

License

MIT

Similar packages

Other packages similar to deep-extend

lodash.merge

Lodash provides a method called merge which can recursively merge own and inherited enumerable string keyed properties of source objects into the destination object. It's similar to deep-extend but comes as part of the larger lodash utility library, which offers a wide range of functions for different purposes.

extend

The extend package is another utility that can merge objects but does not offer deep merge capabilities by default. It is less powerful for deep object merging compared to deep-extend but can be used for shallow merges.

merge-deep

Merge-deep is similar to deep-extend as it allows for deep merging of objects. It recursively merges own and inherited enumerable properties of source objects into the destination object, similar to deep-extend, and is a good alternative if deep-extend is not suitable for some reason.