how to use the methods function from the underscore library in typescript

To use the methods from the Underscore library in TypeScript, first you need to install the library by running the following command in your terminal:

index.ts
npm install underscore
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Next, you can import the library in your TypeScript file as follows:

index.ts
import * as _ from 'underscore';
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Now, you can use any method from the Underscore library in your TypeScript code. For example, to use the map() function to convert an array of numbers to an array of strings, you can write the following code:

index.ts
const numbers = [1, 2, 3, 4, 5];
const strings = _.map(numbers, n => String(n));
console.log(strings); // output: ["1", "2", "3", "4", "5"]
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In this example, we first define an array of numbers, and then use the map() function from the Underscore library to convert each number to a string. Finally, the console.log() function is used to print the resulting array of strings to the console.

That's it! With these simple steps, you can start using the powerful methods and functions provided by the Underscore library in your TypeScript projects.