# Async utils

@apoyo/std contains a lot of utilities to handle commonly used asynchroneous tasks.

# Promise module

By default, the Prom namespace will contain utilities about Promises.

It will contain useful utilities like:

• thunk to wrap an synchroneous or asynchroneous operation into a promise.
• mapError to map over the rejected error of the promise.
• tryCatch to encapsulate your resolved / rejected value into a Result (Ok if resolved, or Ko if rejected)
• timeout to timeout your promise
• etc...

# Task module

As a Promise is eager and will directly be executed, you may sometimes rather use Tasks, who are the lazy equivalent of a Promise.

This allows a multitude of operations that are not possible with Promises, like executing a list of asynchroneous tasks in sequence or in concurrency.