import { Nullable } from '../kotlin/clientsdk-clientcore_js';
import vonage from '../utils/vonage';
/**
 * A group of Topics that a {@link VonageLogger} can subscribe to
 */
export type Topics = vonage.Topics | typeof Topics.prototype.name;
/**
 * A group of Topics that a {@link VonageLogger} can subscribe to
 */
export declare const Topics: typeof vonage.Topics;
export type Topic = vonage.TopicJS;
export declare const Topic: typeof vonage.TopicJS;
export type LoggingLevelName = typeof vonage.LoggingLevelJS.prototype.name;
/**
 * The Client Logging Level.
 *
 * It can be set for the internal logger via {@link ClientInitConfigObject.loggingLevel}
 * as well as for a custom logger via {@link VonageLogger.minLogLevel}.
 *
 * @enum
 */
export declare const LoggingLevel: {
    readonly Verbose: "Verbose";
    readonly Debug: "Debug";
    readonly Info: "Info";
    readonly Warn: "Warn";
    readonly Error: "Error";
    readonly Assert: "Assert";
};
export type LoggingLevel = vonage.LoggingLevelJS | LoggingLevelName;
/**
 * An interface representing a client logger to be set via {@link ClientInitConfigObject.customLoggers}
 *
 * @property name The name of the logger.
 * @property minLogLevel The minimum log level of the logger.
 * @property topics The topics that the logger is subscribed to.
 * @property onLog The callback to be invoked when a log is emitted.
 *
 * @example
 * [[include: snippet_Logging.txt]]
 */
export type VonageLogger = VonageLoggerJS | ({
    minLogLevel?: LoggingLevel;
    topics?: Topics[];
} & Omit<VonageLoggerJS, 'minLogLevel' | 'topics'>);
export declare const convertLogger: (logger: VonageLogger) => VonageLoggerJS;
export interface VonageLoggerJS {
    name: string;
    minLogLevel?: Nullable<vonage.LoggingLevelJS>;
    topics?: Nullable<vonage.Topics[]>;
    onLog(level: LoggingLevelName, topic: Topic, message: string): void;
}
export declare const createVonageLogger: (name: string, onLog: (level: LoggingLevelName, topic: Topic, message: string) => void, minLogLevel?: LoggingLevel, topics?: Topics[]) => VonageLogger;