Lua as a configuration language -- validation

[Chris Smith <space.dandy@...>]

I’m using Lua for configuration.  That means I need to validate entries for correctness, provide default values and warning messages where necessary, as well as ensuring my code doesn’t blow up when trying to access a non-existent structure.  I’m finding my code becoming bloated with largely boiler-plate safety code, particularly when accessing entries that are nested a few levels deep.

Is there a nice, idiomatic way of handling this?

Regards,
Chris
—
Chris Smith <space.dandy@icloud.com>