How to wait for a promise to be resolved?

Question

I\'m dealing with a NodeJs framework that requires a certain function to be synchronous, but I need to retrieve a value that can only be accessed asynchronously. In a perfect wo

Answer 1

Given that node is by default only single threaded there isn't really an easy way to solve this. There is one though. Bases on generators/fibers you can add a sort of concurrent execution to node. There is a waitfor implementation based on that.

Answer 2

In Q if you have a resolved promise you can just take the value with inspect

exports.synchronizePromise = function(promise) {
  var i = promise.inspect();
    if (i.state === "rejected") {
      throw i.reason;
    } else if (i.state === "fulfilled") {
      return i.value;
    } else {
      throw new Error("attempt to synchronize pending promise")
    }
};

However if the promise is pending, it is truly asynchronous and your question doesn't then make sense and the function will throw an error.