Bangle.js emulator running out of memory

[espruino-discuss2]

Posted at 2022-05-06 by Asynchronous

The emulator performs some strange variable reassignments to my code when I try to minify it.
When I change these variable definitions from let keys; to var keys; and re-run the code, I get low memory errors. This happens for both Bangle.js 1 and 2.
How can I overcome these limitations? Is there a way that I can simulate more memory on the emulator?

[gfwilliams]

Posted at 2022-05-09 by @gfwilliams

Ahh, yes, the issue is with the way Espruino doesn't handle let with scoping - and unhelpfully the minifier tends to overlap variable names whenever it can. It came up somewhere else recently, and using var is definitely the best bet.

As far as I know the Emulator has as much RAM as a real Bangle, so if you're hitting memory errors then it's probably a sign that your code just won't work on a real Bangle.

It's rare that normal code has issues like this especially on Bangle.js 2. Have you seen http://www.espruino.com/Code+Style#other-suggestions

Are you doing something like trying to transpile code?