.at function isn't supported in Chrome versions before version 92

[Crashdoom]

On Chrome versions prior to v92, the Array.at(...) function isn't supported and results in an unhandled exception. It appears the base WebUSB support works as the printer shows up and connects, but the initial configuration and any further commands result in an error.

This affects several models of Chromebooks sold and available through Walmart, which are reported to be running Chrome 88.

[Cellivar]

Okay so I did some digging to understand the state of the world with polyfills.

• Typescript intentionally does not polyfill new API calls
• CoreJS seems to be considered to be the standard polyfill library
• TS has docs on using babel instead of raw tsc

As mentioned offline if the looming deadline means I need to ship a version without array.at() in it I can whip that up, but I fear other things in the library that might also need polyfilling. Adding a polyfill system at the application layer so it can be automatically included on older platforms feels like a better approach.