How to wrap async function calls into a sync function in Node.js or Javascript?

• node-fibers

  3 3,559 0.0 C++

  Fiber/coroutine support for v8 and node.

Asynchronous function using callback/promise is the DNA of JavasSript and Node.js. Any non-trivial JS app is probably permeated with this coding style. But this practice can easily lead to so called callback pyramid of doom. Even worse, if any code in any caller in the call chain depends on the result of the async function, those code has to be wrapped in callback function as well, imposing a coding style constraint on caller. From time to time I find the need to encapsulate an async function (often provided in a 3rd party library) into a sync function in order to avoid massive global re-factoring. Searching for a solution on this subject usually ended up with Node Fibers or npm packages derived from it. But Fibers just cannot solve the problem I am facing. Even the example provided by Fibers' author illustrated the deficiency:

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