deferFn always resolves false

[wyqydsyq]

deferFn should resolve the value of it's underlying promise, however it actually always resolves false:

	const { data, run, setData } = useAsync({
		initialValue: defaultContext,
		deferFn: customerLogin,
	});

	if (doLogin) {
		run(customerId).then(console.log);
	}

Logs false.

I would expect to get the object resolved by the Promise that customerLogin returns.

I want to be able to extract the value from the promise deferFn resolves, then call setData with the resolved response so the component re-renders with the new data e.g.

	const { data, run, setData } = useAsync({
		initialValue: defaultContext,
		deferFn: customerLogin,
	});

	if (doLogin) {
		run(customerId).then(customer => setData(customer));
	}

I need to use deferFn because I only want to run the promise conditionally, promiseFn (which does return the resolved value as expected) executes automatically so wouldn't work here, but I also want to get the data resolved from the deferred promise as well.

[ghengeveld]

This is actually going to change in the next release, and should resolve your issue. See #83

In a nutshell:

• run no longer returns anything
• a new promise property is introduced, which properly resolves/rejects as expected

Regardless, you shouldn't need this at all. If you run a deferFn, it's fulfilled value will automatically become the data. You don't need setData to do that.

[ghengeveld]

I'm going to close this because it should be resolved by either relying on run to update data automatically, or by using the newly introduced promise property returned by useAsync.