Problem with asynchronous code in class ES6

Sat 2019.03.02

Article - "How ES6 classes work"

Yes, quite nicely done, and was so in response to issues I had with large classes within modules using require( ) back in October 2018. Those steps helped me pin-point one culprit similarly to:

I noticed that from #1 above:

at line 248 col 6

as you have quite a few lines of code, are you using that chunk in a module and have Espruima on perhaps? My issues were resolved by turning minification off. (as ES6 reverts to ES5 under some conditions)

See heading "Using modules and classes" from your #9 link above.

Espruino change log

https://github.com/espruino/Espruino/blob/master/ChangeLog

Release dates

https://github.com/espruino/Espruino/releases

Several enhancements were added between October and January related to ES6 and had me re-flash from 1v94-1v99-2v00-2v01

1v96 has been around for a year and ES6 changes were peppered in current releases. Still in it's infancy.

As @opichals #7 most likely is using a recent release and has indicated:

It looks like an Espruino bug.

It is quite possible that it is just that, or that all nuances of ES6 are just not implemented yet. @Gordon most likely will be the definitive knowledge source here.