Consider exporting the lazyerror type #1
Description
It might be useful for the lazyerror type and lazyerror.loc method to be exported. For example, someone could want to avoid any location information in errors by default (by setting FileSegments and FunctionSegments to zero, and Format to %[4]s), but still have PC / location information being carried and used in logs, traces, etc.
But let's have a real need first.