Module common 

Cross-sector helper rules: country code validation, numeric utilities, unit conversions, and the dependency-free date key used for regulatory phase selection.

Modules

country

ISO 3166-1 alpha-2 country code validation.

date

A dependency-free calendar date, used as an ordering key for regulatory effective dates.

numeric

Shared numeric helpers: percentage clamping, sum checks, thresholds.

units

Unit conversion helpers (kg/g, MJ/kWh, etc.).