What goes on behind the scenes?
const facade = {
// A:
doSomething: async () => await delegatedFunction(),
// B:
doSomething: async () => delegatedFunction(),
// C:
doSomething: () => delegatedFunction(),
// D:
doSomething: delegatedFunction,
}
async function delegatedFunction() {}
The first three functions are used to bind parameters for the delegatedFunction. You are only able to pass values specified in the function call.
The third function is different as it is not an async function object, although it still behaves like one. The nuances may not be significant to you in the long run.
Consider this comparison:
(async () => 1).constructor !== (() => 1).constructor
Async/await provides a higher-level way to work with promises in Javascript.
It's difficult to give a definitive answer without knowing the specifics of the delegatedFunction.
A: When you call facade.doSomething(), it will return the result of invoking delegatedFunction
B, C, and D: Regardless of what is returned from delegatedFunction, they all will resolve to a promise
If you require more information, consider posing a more specific question
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