import Context from '../context/context';
import Span from '../span/span';
declare type AsyncState = {
    spans: Span[];
    valid: boolean;
};
declare class ContextManager {
    get asyncState(): AsyncState;
    get currentSpan(): Span;
    get hasContext(): boolean | undefined;
    get current(): Context;
    get spans(): Span[];
    spansDup(): Span[];
    clear(): void;
    restore(context: Context, spans: Span[]): void;
    withSpan(span: Span, callback: (...args: any[]) => any, ...args: any[]): any;
    withSpanAwait(span: Span, callback: (...args: any[]) => any, ...args: any[]): Promise<any>;
}
declare const _default: ContextManager;
export default _default;