public/subjects/keep-trying-or-giveup/README.md

## Keep Trying Or Giveup

### Instructions

Create a `retry` function, that takes 2 arguments:

- `count`: indicates maximum number of retries.
- `callback`: an `async` function that will be invoked for every attempt.

`retry` returns a function that invokes the `callback` function. That function passes its arguments to `callback`, and returns the value from `callback`.

The function returned by `retry` must `catch` errors from `callback`. After that function has caught `count` errors, it must `throw` an `Error`.

> if `count` is 3, `callback` will be invoked at most 4 times, the initial call plus 3 retries.

Create function named `timeout`, that takes 2 arguments:

- `delay`: indicates maximum wait time.
- `callback`: an asynchronous function that will be invoked.

`timeout` returns a function that invokes and returns the value from `callback`. The function must pass its arguments to `callback`. If `callback` does not resolve before `delay`, your function returns `Error('timeout')`.

### Notions

- [Promises](https://nan-academy.github.io/js-training/examples/promises.js)
- [setTimeout]( https://devdocs.io/dom/settimeout)
- [Promise.race](https://devdocs.io/javascript/global_objects/promise/race)