how to use the uniqby function from lodash in javascript

To use the uniqBy() function from lodash in JavaScript, you first need to install lodash into your project. You can do this by running the following command in your terminal:

npm install lodash
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Once lodash is installed, you can import the uniqBy() function into your JavaScript code file using the following line:

index.tsx
const uniqBy = require('lodash/uniqBy');
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The uniqBy() function takes two arguments: an array and a callback function. The callback function is used to determine the uniqueness of each element in the array.

Here's an example usage of uniqBy():

index.tsx
const data = [
  { id: 1, name: 'John' },
  { id: 2, name: 'Jane' },
  { id: 1, name: 'Johnny' },
  { id: 3, name: 'Bob' },
  { id: 2, name: 'Janet' },
];

const uniqueData = uniqBy(data, obj => obj.id);

console.log(uniqueData);
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In this example, uniqBy() is called with data as the first argument, and a callback function that returns the id property of each object as the second argument. The function returns only the unique objects in the array, based on their id property. This will result in the following output:

index.tsx
[
  { id: 1, name: 'John' },
  { id: 2, name: 'Jane' },
  { id: 3, name: 'Bob' },
]
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Note that the uniqBy() function mutates the original array, so if you don't want to modify the original array, make sure to create a copy of it before calling uniqBy().