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

To use the isboolean function from the Underscore library in TypeScript, you can follow these steps:

1. Install the Underscore library by running the following command in your project's root directory:

   npm install underscore
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2. Import the isBoolean method from the Underscore library in your TypeScript file:

   index.ts
   import { isBoolean } from 'underscore';
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3. Use the isBoolean method in your code to check if a given value is a boolean or not:

   index.ts
   const value1: boolean = true;
   const value2: number = 42;
   
   console.log(isBoolean(value1)); // true
   console.log(isBoolean(value2)); // false
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The isBoolean function takes one argument and returns a boolean value indicating whether the argument is a boolean or not. It can be used with any value, including undefined and null.