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
    
    23 chars
    2 lines
  2. Import the isBoolean method from the Underscore library in your TypeScript file:

    index.ts
    import { isBoolean } from 'underscore';
    
    40 chars
    2 lines
  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
    
    139 chars
    6 lines

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.

gistlibby LogSnag