An activity function that returns false is converted to null in orchestrator

[sdoucetOctopus]

Hi,

I'm using v1.1.4 of durable-functions in javascript.

I have an activty function that returns whether a condition is met, let's say it's :

module.exports = async function (context) {
    return false;
};

When my orchestrator calls this activity funciton, it receives null instead of false :

module.exports = df.orchestrator(function* (context) {
    const myState = yield context.df.callActivity('myActivity');
    return `My state is ${myState}`;
});

If my activity function returns true instead of false, the result is correct, indeed true.
Am I missing something here or it's a bug ?

Thanks

[cgillum]

Is this running in Azure or locally? If it's in Azure we could look into some of our online telemetry to see what's going on. If it's local, can you verify whether this still happens after clearing all messages in the storage queues and trying again?

[sdoucetOctopus]

Hi,

I'm running my functions locally for now.
I've deleted all queues (durablefunctionhub-control : 0-3 and workitems), an still having this behaviour.
I've also deleted the History and Instances tables.

I'm running VS Code with DurableTask extension v1.7.0

Thnaks

[kashimiz]

Repro'd this. Also occurs for 0, ''/"", and NaN.

[kashimiz]

This has been partially fixed; when returning undefined or NaN, which have no equivalent in the underlying .NET extension, the orchestrator's output still appears as null.