import type { LogTransport } from '../interfaces/logTransport';
/**
 * Platform-agnostic structured logger. All platform-specific behavior — where
 * records actually go — lives behind the injected {@link LogTransport}: web
 * injects `DatadogBrowserLogsTransport` (`@datadog/browser-logs`), React Native
 * injects a Datadog React Native transport. The queueing, env detection, level
 * routing, console fallback, and user-context tracking here touch no DOM and
 * are shared across platforms.
 */
export declare class FunLogger {
    protected apiKey: string | null;
    protected isDebugMode: boolean;
    protected userId: string | null;
    protected userAddress: string | null;
    protected userName: string | null;
    protected userLoginType: string | null;
    protected typeLabel: string | null;
    protected sdkVersion: string | null;
    protected l2Address: string | null;
    private flowTraceId;
    private debugTag;
    private seq;
    private isConfigured;
    private logQueue;
    private disableLogging;
    private readonly transport;
    constructor(transport: LogTransport);
    private getFunLogEnv;
    /** Merge caller data with the logger's resolved context for the transport. */
    private buildLogContext;
    private processLog;
    private onDebug;
    private onInfo;
    private onWarn;
    private onError;
    private extractError;
    /**========================
     * PUBLIC LOGGER FUNCTIONS
     *=========================*/
    log(title: string, data?: object): void;
    info(title: string, data?: object): void;
    debug(title: string, data?: object): void;
    warn(title: string, data?: object): void;
    /**
     * @param errorOrData -
     * Previously was called "error" but since in the {@link Logger} interface, error is defined as object (which is the same thing as "any"), we treat it as of unknown type here for safety.
     * In a lot of places it's actually being used as a "data" prop, which also usually has an `.error` property representing an actual {@link Error} object.
     */
    error(title: string, errorOrData: unknown, _data?: object): void;
    private flushLogQueue;
    configure(apiKey: string | null, isDebug: boolean, sdkVersion: string, disableLogging?: boolean): void;
    getUserId(): string | null;
    getUserAddress(): string | null;
    getUserName(): string | null;
    getUserLoginType(): string | null;
    getTypeLabel(): string | null;
    getL2Address(): string | null;
    setFlowContext({ traceId }: {
        traceId: string;
    }): void;
    clearFlowContext(): void;
    setDebugTag(tag: string | null): void;
    getDebugTag(): string | null;
    getTraceId(): string | null;
    flush(): void;
    setUserInfo(userId: string, userAddress: string, userName: string, userLoginType: string, typeLabel: string, l2Address?: string): void;
}
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