When we spawn a promise we can’t synchronously wait for it to finish. We can only pass a callback via then. Waiting for a promise is disallowed to encourage the development of non-blocking code.
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Await and Async Explained with Diagrams and Examples
When we spawn a promise we can’t synchronously wait for it to finish. We can only pass a callback via then. Waiting for a promise is disallowed to encourage the development of non-blocking code.
Full article