import { UserAlias } from "./UserAlias";
/**
 * @description
 *
 * Type for user ref. Technically it is a string, but it has an additional
 * marker (tag) to distinguish it from other strings at the compilation level,
 * and mark that it was actually validated as a user ref. Also, any user alias
 * is a valid user ref as well.
 *
 * You may use the `asValidUserRef` function to validate any string as a user ref
 * and return it as the `UserRef` type.
 */
export type UserRef = (string & {
    __userRef__: void;
}) | UserAlias;
export declare function asValidUserRef(value: unknown): UserRef;
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