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Lodash _.zipObjectDeep

Overview

lodash is a popular JavaScript library providing useful utility functions to make programming easier. One of the many methods provided by lodash is the _.zipObjectDeep() method, which is used to create an object from arrays using a nested key structure. The arrays are used to create key-value pairs in the resulting object. This method is particularly useful when working with nested objects, as it allows you to create them easily by providing an array of keys in a nested structure along with their respective values.

The _.zipObjectDeep() method takes two arguments: an array of keys and an array of values. It starts by creating an empty object, then iteratively adds the keys and their corresponding values to the object, based on the nested structure of the keys array.

If a value is not provided for a given key, undefined is used instead. If a key is provided without a corresponding value, it will be set as undefined.

Here is an example use case of the _.zipObjectDeep() method:

const lodash = require('lodash');
const keys = ['a.b[0].c', 'a.b[1].d'];
const values = [1, 2];
const obj = lodash.zipObjectDeep(keys, values);
console.log(obj); // { a: { b: [{ c: 1 }, { d: 2 }] } }

In this example, we pass keys and values arrays to _.zipObjectDeep(). The resulting object obj has nested keys containing the values we passed into the corresponding position of the values array.

In summary, _.zipObjectDeep() is a powerful method that helps you create nested objects in JavaScript with ease. It takes an array of keys and values, and creates nested key-value pairs in the resulting object, based on the structure of the keys array. Its versatility and flexibility make it an essential tool for working with complex nested data structures.