how to use the wrap function from the lodash library in typescript

To use the wrap function from the Lodash library in TypeScript, you first need to import the function from the Lodash library.

index.ts
import { wrap } from 'lodash'; 
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Once imported, you can call the wrap function and pass two functions as parameters. The first function is the function you want to modify the behavior of, and the second function is the wrapper function that will modify the behavior of the first function. The wrapper function will receive the original function as the first argument, followed by any arguments passed to the original function.

index.ts
function add(a: number, b: number) {
  return a + b;
}

function wrapAdd(func: (...args: any[]) => any) {
  return (...args: any[]) => {
    const result = func(...args);
    console.log(`Result is ${result}`);
    return result;
  };
}

const wrappedAdd = wrap(add, wrapAdd);

wrappedAdd(2, 3); // Logs 'Result is 5' and returns 5
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In this example, we have a simple add function that returns the sum of two numbers passed as arguments. We also have a wrapAdd function that takes a function and returns a wrapper function that logs the result of the original function to the console before returning the result.

Finally, we create a wrapped version of the add function by calling the wrap function with the add function and the wrapAdd function as arguments. The resulting function, wrappedAdd, can be called with the same arguments as the original add function, but now it logs the result to the console before returning it.

Note that we have used the any type for the arguments and return values in these examples. In practice, it is better to use more specific types.