How to make a sleep function in javascript with async await

to create a sleep function in javascript using async/await, you leverage the power of promises. the sleep function is designed to pause execution for a specified duration. first, you define a function that returns a promise, which resolves after a set timeout, achieved through the built-in `settimeout` method. this allows you to specify how long the delay should be.

when using the sleep function within an async function, you can call it with the `await` keyword, which pauses the execution of the async function until the promise is resolved. this approach enables a more readable and synchronous-like flow in your asynchronous code, making it easier to manage delays without blocking the main thread. overall, the combination of async/await and promises provides a clean and effective way to implement delays in javascript applications.
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