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

When using TypeScript, the Underscore library can be used for its utility functions. One of those functions is noop, which simply returns undefined and does not perform any action. Below is an example of how to use the noop function in TypeScript.

index.ts
import { noop } from "underscore";

function doSomething(callback?: Function) {
  callback = callback || noop;
  // ...
}
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In this example, noop is imported from the underscore library. The doSomething function takes an optional callback parameter. If the parameter is not provided, callback is assigned the noop function, which ensures that a callable function is always used without causing any unexpected behaviors.