lodash.merge
Advanced tools
Package description
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.
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] }"}Deepmerge is an npm package that provides deep merging of objects and arrays. It is similar to lodash.merge but is more focused on deep merging without the rest of lodash's utility functions.
Extend is a port of the classic jQuery.extend method that allows for deep or shallow copying of properties from one object to another. It is less powerful than lodash.merge for deep merging but is a lightweight alternative.
object-assign-deep npm package is similar to Object.assign but with deep merging capabilities. It is a smaller utility compared to lodash.merge and is focused solely on object merging.
Readme
The Lodash method _.merge exported as a Node.js module.
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.
FAQs
The Lodash method `_.merge` exported as a module.
The npm package lodash.merge receives a total of 19,450,272 weekly downloads. As such, lodash.merge popularity was classified as popular.
We found that lodash.merge demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 2 open source maintainers collaborating on the project.
Did you know?
Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.
Security News
UnitedHealth Group disclosed that the ransomware attack on Change Healthcare compromised protected health information for millions in the U.S., with estimated costs to the company expected to reach $1 billion.
Security News
GitHub is susceptible to a CDN flaw that allows attackers to host malware on any public repository.
Security News
At Node Congress, Socket CEO Feross Aboukhadijeh uncovers the darker aspects of open source, where applications that rely heavily on third-party dependencies can be exploited in supply chain attacks.