Converting JQueryPromise to Promise: A step-by-step guide

In my current project, there is a code snippet that produces a JQuery promise:

const jqProm = server.downloadAsync();

I am interested in integrating this promise within an async function. I was thinking of creating something similar to the C# TaskCompletionSource, returning a placeholder Task (Promise), and using it as a handler to set the status of the dummy Task (Promise) based on the resolve/reject outcome of jqProm.

Is there a way to implement this? I have searched for a constructor that accepts resolver and rejector actions with no luck - it seems like there isn't anything equivalent to a PromiseCompletionSource.

Answer №1

jQuery promises act as thenables, allowing seamless compatibility with native promises. They automatically utilize Promise.resolved. To implement, simply use the code snippet:

await server.downloadAsync();

Answer №2

Today I encountered that very problem. Take a look at this for a solution.

If you need to convert a jQuery promise into an Angular promise:

var angularPromise = $q.when(jQueryPromise); // for example: $q.when($.get(...));

To convert a jQuery promise to a native or Bluebird promise:

var promise = Promise.resolve(jQueryPromise); // for example: Promise.resolve($.get(..));

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