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lodash.assignin

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lodash.assignin

The lodash method `_.assignIn` exported as a module.


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What is lodash.assignin?

The lodash.assignin package is a utility function from the Lodash library that allows you to copy enumerable own and inherited properties from one or more source objects to a target object. This is useful for merging objects and creating new objects with combined properties.

What are lodash.assignin's main functionalities?

Merging Objects

This feature allows you to merge properties from a source object into a target object. In this example, the properties of the source object are added to the target object.

const assignIn = require('lodash.assignin');
const target = { a: 1 };
const source = { b: 2 };
const result = assignIn(target, source);
console.log(result); // { a: 1, b: 2 }

Merging Multiple Objects

This feature allows you to merge properties from multiple source objects into a target object. In this example, properties from both source1 and source2 are added to the target object.

const assignIn = require('lodash.assignin');
const target = { a: 1 };
const source1 = { b: 2 };
const source2 = { c: 3 };
const result = assignIn(target, source1, source2);
console.log(result); // { a: 1, b: 2, c: 3 }

Overwriting Properties

This feature allows you to overwrite existing properties in the target object with properties from the source object. In this example, the property 'b' in the target object is overwritten by the property 'b' from the source object.

const assignIn = require('lodash.assignin');
const target = { a: 1, b: 2 };
const source = { b: 3, c: 4 };
const result = assignIn(target, source);
console.log(result); // { a: 1, b: 3, c: 4 }

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Package last updated on 13 Aug 2016

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