Tzvetan Mikov

@dev-john-nguyen thanks for collecting this data so quickly! Unfortunately, it looks like neither of the runtimes owns a lot of memory. You can look at `js_allocatedBytes` and `js_heapSize` for the...

@dev-john-nguyen another experiment you should run is to invoke `gc()` periodically (every second?). If it helps, it would prove pretty conclusively that these are not leaks, but just external memory...

@dev-john-nguyen So, let's recap: - You reported that your app's memory goes up to 1.9GB of memory usage before it crashes soon after. - At the same time we saw...

@wcandillon I like both the idea of a RN command line runner and a simple React Native test app. Let me give you my thoughts on each. ## RN Command...

So, to recap: the spec does not require this format, and Hermes has never supported it. However JSC and v8 engines do support it. For now we view this as...

Hi, unfortunately HostObject does not support the "in" operation, because the HostObject API doesn't allow it: it only has 'get()`, `set()` and `getPropertyNames()`. There is no `has()` method. This is...

We can't change the current behavior because that would break the existing API contract. However we can do betterL we discussed it and decided to add a `has()` method to...

Closing for now, since no progress. Please feel free to re-open when there are updates.

Thanks we will look into this. Hermes is usually faster than JSC on iOS devices, so this slowdown must be caused by something specific.

No, and unfortunately no plans to work on it. Unfortunately we are not able to prioritize analyzing existing 3rd party libraries that are not used by Meta for performance. If...