questions on buffer handling

[mreinstein]

Hey @alexmoon, thanks for writing this module! Been a great learning resource. :)

I'm curious about some of the logic in your _write() call. This line:

https://github.com/alexmoon/pv-porcupine/blob/master/index.ts#L133

we return, but there might still be leftover data in chunk. Is this intentional?

Similarly on line 144 we return, and there might be data in chunk that hasn't been copied to the buffer.

are we intentionally only processing the first full frame of data and then returning, or is this by accident?

[mreinstein]

I'm also curious about line 105:

this.frameSize = porcupine.frameLength() * 2;

What is the 2 in this case? Is this because chunk is a byte array, and porcupine.frameLength() is the number of int16 values that are desired?