export type MaybeBooleanOrT<T> = T | boolean;
/**
 * - If {@link maybeT} is `undefined`, returns {@link tDefaults}.
 * - If {@link maybeT} is `true`, returns {@link tDefaults}.
 * - If {@link maybeT} is `false`, returns `false`.
 * - If {@link maybeT} is an object, it's returned merged with {@link tDefaults}.
 * @param maybeT The provided options or a boolean value.
 * @param tDefaults The fallback options to use if {@link maybeT} is `true`.  If
 * {@link maybeT} is an object, it will be merged with these defaults.
 */
export declare function resolveOpts<T extends {}>(maybeT: MaybeBooleanOrT<Partial<T>> | undefined, tDefaults: T): T | false;