UNPKG

@mapbox/mapbox-gl-style-spec

Version:

a specification for mapbox gl styles

22 lines (19 loc) 517 B
/** * A type used for returning and propagating errors. The first element of the union * represents success and contains a value, and the second represents an error and * contains an error value. * @private */ export type Result<T, E> = { result: 'success'; value: T; } | { result: 'error'; value: E; }; export function success<T, E>(value: T): Result<T, E> { return {result: 'success', value}; } export function error<T, E>(value: E): Result<T, E> { return {result: 'error', value}; }