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

To use the isRegExp function from the Underscore library in TypeScript, you first need to install the Underscore library and its types.

You can do this using npm:

index.ts
npm install underscore
npm install @types/underscore
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Once you have installed the library and its types, you can import the isRegExp function from Underscore and use it in your TypeScript code:

index.ts
import * as _ from 'underscore'

const myRegExp = /[a-z]+/
const isMyRegExp = _.isRegExp(myRegExp)

console.log(isMyRegExp) // true
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In this example, we import the entire Underscore library using the * as _ syntax. We then create a regular expression myRegExp and pass it to the _.isRegExp function, which returns a boolean indicating whether the argument is a regular expression or not. This boolean is stored in the isMyRegExp variable and then logged to the console.