import type { UserDoc } from "@raytio/maxcryptor";
import type { ICognitoUserAttributeData } from "amazon-cognito-identity-js";
/**
 * Given a `UserDoc` from the maxcryptor, this returns an object
 * which you can provide to `Auth.updateUserAttributes()`. It is
 * an object of stringified Json.
 *
 * Note: Only includes attributes that exist in userDoc. Missing attributes
 * are filtered out to avoid Cognito "Attribute value must not be null" errors.
 */
export declare const toCognitoAttributes: (userDoc: UserDoc) => {
    [customCognitoName: string]: string;
};
/**
 * This function converts Cognito's userAttributes into a maxcryptor UserDoc.
 * The userAttributes come from `const attributes = await Auth.userAttributes(user)`
 */
export declare const fromCognitoAttributes: (attributes: ICognitoUserAttributeData[]) => UserDoc;