export declare enum BiometryType {
    NONE = 0,
    TOUCH_ID = 1,
    FACE_ID = 2,
    FINGERPRINT = 3,
    FACE_AUTHENTICATION = 4,
    IRIS_AUTHENTICATION = 5,
    MULTIPLE = 6
}
export interface Credentials {
    username: string;
    password: string;
}
export interface IsAvailableOptions {
    /**
     * Specifies if should fallback to passcode authentication if biometric authentication is not available.
     */
    useFallback: boolean;
}
export interface AvailableResult {
    isAvailable: boolean;
    biometryType: BiometryType;
    errorCode?: number;
}
export interface BiometricOptions {
    reason?: string;
    title?: string;
    subtitle?: string;
    description?: string;
    negativeButtonText?: string;
    /**
     * Specifies if should fallback to passcode authentication if biometric authentication fails.
     */
    useFallback?: boolean;
    /**
     * Only for iOS.
     * Set the text for the fallback button in the authentication dialog.
     * If this property is not specified, the default text is set by the system.
     */
    fallbackTitle?: string;
    /**
     * Only for Android.
     * Set a maximum number of attempts for biometric authentication. The maximum allowed by android is 5.
     * @default 1
     */
    maxAttempts?: number;
    /**
     * Only for Android.
     * Specify which biometry types are allowed for authentication.
     * If not specified, all available types will be allowed.
     * @example [BiometryType.FINGERPRINT, BiometryType.FACE_AUTHENTICATION]
     */
    allowedBiometryTypes?: BiometryType[];
}
export interface GetCredentialOptions {
    server: string;
}
export interface SetCredentialOptions {
    username: string;
    password: string;
    server: string;
}
export interface DeleteCredentialOptions {
    server: string;
}
/**
 * Keep this in sync with BiometricAuthError in README.md
 * Update whenever `convertToPluginErrorCode` functions are modified
 */
export declare enum BiometricAuthError {
    UNKNOWN_ERROR = 0,
    BIOMETRICS_UNAVAILABLE = 1,
    USER_LOCKOUT = 2,
    BIOMETRICS_NOT_ENROLLED = 3,
    USER_TEMPORARY_LOCKOUT = 4,
    AUTHENTICATION_FAILED = 10,
    APP_CANCEL = 11,
    INVALID_CONTEXT = 12,
    NOT_INTERACTIVE = 13,
    PASSCODE_NOT_SET = 14,
    SYSTEM_CANCEL = 15,
    USER_CANCEL = 16,
    USER_FALLBACK = 17
}
export interface NativeBiometricPlugin {
    /**
     * Checks if biometric authentication hardware is available.
     * @param {IsAvailableOptions} [options]
     * @returns {Promise<AvailableResult>}
     * @memberof NativeBiometricPlugin
     * @since 1.0.0
     */
    isAvailable(options?: IsAvailableOptions): Promise<AvailableResult>;
    /**
     * Prompts the user to authenticate with biometrics.
     * @param {BiometricOptions} [options]
     * @returns {Promise<any>}
     * @memberof NativeBiometricPlugin
     * @since 1.0.0
     */
    verifyIdentity(options?: BiometricOptions): Promise<void>;
    /**
     * Gets the stored credentials for a given server.
     * @param {GetCredentialOptions} options
     * @returns {Promise<Credentials>}
     * @memberof NativeBiometricPlugin
     * @since 1.0.0
     */
    getCredentials(options: GetCredentialOptions): Promise<Credentials>;
    /**
     * Stores the given credentials for a given server.
     * @param {SetCredentialOptions} options
     * @returns {Promise<any>}
     * @memberof NativeBiometricPlugin
     * @since 1.0.0
     */
    setCredentials(options: SetCredentialOptions): Promise<void>;
    /**
     * Deletes the stored credentials for a given server.
     * @param {DeleteCredentialOptions} options
     * @returns {Promise<any>}
     * @memberof NativeBiometricPlugin
     * @since 1.0.0
     */
    deleteCredentials(options: DeleteCredentialOptions): Promise<void>;
}