UnitSystemKey Type Alias

UnitSystemKey = "metric" | "imperial" | "usCustomary" | "usSurvey"

Identifies a user-facing unit system preference group.

A UnitSystemKey does not map one-to-one to an EC UnitSystem element. Instead, each key represents a preference group that matches against one or more EC UnitSystem names in priority order when resolving formats from a KindOfQuantity:

EC UnitSystem elements not listed above (e.g. CGS, MARITIME, INDUSTRIAL) are not covered by any preference group and will only appear if a KindOfQuantity explicitly references them.

@see SchemaFormatsProvider for how preference groups resolve formats.

Defined in

• quantity/src/Interfaces.ts Line 129