import { MaybePromise } from '../types/utilities';
/**
 * How a props getter settled. Tagged so that a getter returning `undefined` or an `Error` stays a value.
 */
export type PropsResult = {
    kind: 'value';
    value: unknown;
} | {
    kind: 'error';
    error: unknown;
};
/**
 * Runs a props callback and captures how it settled rather than letting it throw, so that navigation can
 * tell a push or rejection apart from a genuine failure. Sync getters settle synchronously.
 */
export declare function getPropsValue(callback: () => unknown): MaybePromise<PropsResult>;