import { BiometryTokenUpdateStatus, BiometryAuthRequestStatus } from '@telegram-apps/bridge';
import { AbortablePromise } from 'better-promises';
import { AuthenticateOptions, RequestAccessOptions, UpdateTokenOptions } from './types.js';
/**
 * @returns True if the biometry manager is supported.
 */
export declare const isSupported: import('@telegram-apps/signals').Computed<boolean>;
/**
 * Mounts the Biometry component.
 * @since Mini Apps v7.2
 * @throws {FunctionNotAvailableError} The environment is unknown
 * @throws {FunctionNotAvailableError} The SDK is not initialized
 * @throws {FunctionNotAvailableError} The function is not supported
 * @example
 * if (mount.isAvailable()) {
 *   await mount();
 * }
 */
export declare const mount: import('../../wrappers/wrapSafe.js').SafeWrapped<(abortSignal: any) => AbortablePromise<void>, true, never>;
export declare const mountPromise: import('@telegram-apps/signals').Computed<AbortablePromise<any> | undefined>, isMounting: import('@telegram-apps/signals').Computed<boolean>;
export declare const mountError: import('@telegram-apps/signals').Computed<Error | undefined>;
export declare const _isMounted: import('@telegram-apps/signals').Signal<boolean>, isMounted: import('@telegram-apps/signals').Computed<boolean>;
/**
 * Attempts to authenticate a user using biometrics and fetch a previously stored secure token.
 * @param options - method options.
 * @since Mini Apps v7.2
 * @returns Token from the local secure storage saved previously or undefined.
 * @throws {FunctionNotAvailableError} The environment is unknown
 * @throws {FunctionNotAvailableError} The SDK is not initialized
 * @throws {FunctionNotAvailableError} The function is not supported
 * @throws {FunctionNotAvailableError} The parent component is not mounted
 * @throws {ConcurrentCallError} Biometry authentication is already in progress
 * @throws {NotAvailableError} Biometry is not available
 * @example
 * if (authenticate.isAvailable()) {
 *   const { status, token } = await authenticate({
 *     reason: 'Authenticate to open wallet',
 *   });
 * }
 */
export declare const authenticate: import('../../wrappers/wrapSafe.js').SafeWrapped<(options?: AuthenticateOptions) => AbortablePromise<{
    /**
     * Authentication status.
     */
    status: BiometryAuthRequestStatus;
    /**
     * Token from the local secure storage saved previously.
     */
    token?: string;
}>, true, never>;
export declare const authPromise: import('@telegram-apps/signals').Computed<AbortablePromise<{
    /**
     * Authentication status.
     */
    status: BiometryAuthRequestStatus;
    /**
     * Token from the local secure storage saved previously.
     */
    token?: string;
}> | undefined>, isAuthenticating: import('@telegram-apps/signals').Computed<boolean>;
export declare const authError: import('@telegram-apps/signals').Computed<Error | undefined>;
/**
 * Opens the biometric access settings for bots. Useful when you need to request biometrics
 * access to users who haven't granted it yet.
 *
 * _Note that this method can be called only in response to user interaction with the Mini App
 * interface (e.g. a click inside the Mini App or on the main button)_.
 * @since Mini Apps v7.2
 * @throws {FunctionNotAvailableError} The environment is unknown
 * @throws {FunctionNotAvailableError} The SDK is not initialized
 * @throws {FunctionNotAvailableError} The function is not supported
 * @example
 * if (openSettings.isAvailable()) {
 *   openSettings();
 * }
 */
export declare const openSettings: import('../../wrappers/wrapSafe.js').SafeWrapped<() => void, true, never>;
/**
 * Requests permission to use biometrics.
 * @since Mini Apps v7.2
 * @returns Promise with true, if access was granted.
 * @throws {FunctionNotAvailableError} The environment is unknown
 * @throws {FunctionNotAvailableError} The SDK is not initialized
 * @throws {FunctionNotAvailableError} The function is not supported
 * @throws {FunctionNotAvailableError} The parent component is not mounted
 * @throws {ConcurrentCallError} Biometry access request is already in progress
 * @throws {NotAvailableError} Biometry is not available
 * @example
 * if (requestAccess.isAvailable()) {
 *   const accessGranted = await requestAccess({
 *     reason: 'Authenticate to open wallet',
 *   });
 * }
 */
export declare const requestAccess: import('../../wrappers/wrapSafe.js').SafeWrapped<(options?: RequestAccessOptions) => AbortablePromise<boolean>, true, never>;
export declare const requestAccessPromise: import('@telegram-apps/signals').Computed<AbortablePromise<boolean> | undefined>, isRequestingAccess: import('@telegram-apps/signals').Computed<boolean>;
export declare const requestAccessError: import('@telegram-apps/signals').Computed<Error | undefined>;
/**
 * Unmounts the component.
 */
export declare function unmount(): void;
/**
 * Updates the biometric token in a secure storage on the device.
 * @since Mini Apps v7.2
 * @returns Promise with `true`, if token was updated.
 * @throws {FunctionNotAvailableError} The environment is unknown
 * @throws {FunctionNotAvailableError} The SDK is not initialized
 * @throws {FunctionNotAvailableError} The function is not supported
 * @throws {FunctionNotAvailableError} The parent component is not mounted
 * @example Setting a new token
 * if (updateToken.isAvailable()) {
 *   updateToken({
 *     token: 'abcdef',
 *   })
 * }
 * @example Deleting the token
 * if (updateToken.isAvailable()) {
 *   updateToken();
 * }
 */
export declare const updateToken: import('../../wrappers/wrapSafe.js').SafeWrapped<(options?: UpdateTokenOptions) => AbortablePromise<BiometryTokenUpdateStatus>, true, never>;