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lodash.merge

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lodash.merge

The Lodash method `_.merge` exported as a module.


Version published
Maintainers
2
Weekly downloads
30,526,190
increased by4.83%
Bundle size
3.8 kB
Minified + gzipped

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Package description

What is lodash.merge?

The lodash.merge npm package is a method provided by lodash, a popular JavaScript utility library. It is used to recursively merge own and inherited enumerable string keyed properties of source objects into the destination object. It's commonly used to combine configurations, defaults, or to merge JSON objects with a deep copy.

What are lodash.merge's main functionalities?

Deep merging of objects

This feature allows for the deep merging of nested objects, combining properties from both source and destination objects.

{"const object = { 'a': [{ 'b': 2 }, { 'd': 4 }] };
const other = { 'a': [{ 'c': 3 }, { 'e': 5 }] };

_.merge(object, other);
// => { 'a': [{ 'b': 2, 'c': 3 }, { 'd': 4, 'e': 5 }] }"}

Merging with customizer function

This feature allows users to specify a customizer function that determines how merging is handled. It's useful for custom merge behavior on specific properties.

{"function customizer(objValue, srcValue) {
  if (_.isArray(objValue)) {
    return objValue.concat(srcValue);
  }
}

const object = { 'a': [1], 'b': [2] };
const other = { 'a': [3], 'b': [4] };

_.mergeWith(object, other, customizer);
// => { 'a': [1, 3], 'b': [2, 4] }"}

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Readme

Source

lodash.merge v4.6.2

The Lodash method _.merge exported as a Node.js module.

Installation

Using npm:

$ {sudo -H} npm i -g npm
$ npm i --save lodash.merge

In Node.js:

var merge = require('lodash.merge');

See the documentation or package source for more details.

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Last updated on 10 Jul 2019

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