Writing neat asynchronous Node JS code with Promises & Async/Await

Source: https://medium.com/@tkssharma/writing-neat-asynchronous-node-js-code-with-promises-async-await-fa8d8b0bcd7c

 Async functions return a Promise. If the function throws an error, the Promise will be rejected. If the function returns a value, the Promise will be resolved.

Await
Async functions can make use of the await expression. This will pause the async function and wait for the Promise to resolve prior to moving on.
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