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A promise is used to handle the asynchronous result of an operation. JavaScript is designed to not wait for an asynchronous block of code to completely execute before other synchronous parts of the code can run. With Promises, we can defer the execution of a code block until an async request is completed.
A Node. js Promise is a placeholder for a value that will be available in the future, allowing us to handle the result of an asynchronous task once it has completed or encountered an error. Promises make writing asynchronous code easier. They're an improvement on the callback pattern and very popular in Node.
NodeJS is an asynchronous event-driven JavaScript runtime environment designed to build scalable network applications.
A Promise in Node means an action which will either be completed or rejected. In case of completion, the promise is kept and otherwise, the promise is broken. So as the word suggests either the promise is kept or it is broken. And unlike callbacks, promises can be chained.
Just wondering if anyone could give me a comparison of trade-offs between these modules for handling async events. Specifically, I'm interested in knowing about reasons to use Async instead of Fibers.promise, which I am using quite extensively at least in my test code right now. In particular, one of the major pluses I see in Fibers.promise is that I can keep the stack chain front bifurcating, making it possible to use try { } catch { } finally, and also allowing me to ensure that after a request has been handled that the response is ended.
Is anyone using Q_oper8? I found this on another page and was just wondering if that's already dead or if its something I should check out.
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