DriverId

src/types/driver-id.type.tstype

A driver’s identifier: one of the built-in Driver ids, or the id of a driver defined outside this package.

string & {} accepts any string without letting the union collapse to plain string, so editors still suggest the eighteen built-in ids. A custom driver can therefore name itself, and capability errors name it rather than a built-in id it had to borrow:

const STUDIO_API_DRIVER: DriverDefinition = { ...JSON_API_DRIVER, id: 'studio-api' };
// UnsupportedSearchError: The 'studio-api' driver does not support full-text search.

Only built-in ids resolve through DRIVERS, which stays keyed by DriverEnum; a custom driver is always passed as its definition.

Definition

type DriverId = Driver | (string & {})