Error clearly if incompatible Node versions are used

[ludamad]

Currently, if Node 14 is used it will seem to go far then fail at e.g. the first buffer.at. Having an explicit environment/ version check and error would work well, perhaps in a global scope

if not node >= 18
     throw error giving instructions on how to do `nvm use 18`
     Optionally even explain what would happen (some stuff would work others fail etc) if not heeded

[spalladino]

It's probably cleaner to set the node version in the engine field of the package json. See https://docs.npmjs.com/cli/v9/configuring-npm/package-json#engines.

[ludamad]

If we feel the message won't get missed that seems best

[ludamad]

Closed by @Orloaft with the engine >= 18 approach