import Context from '../context/context';
import Segment from '../context/segment';
import SegmentRef from '../context/segmentRef';
import ContextCarrier from '../context/contextCarrier';
import { Tag } from '../tag';
import { SpanLayer, SpanType, Component } from '../constants';
export declare type SpanCtorOptions = {
    context: Context;
    operation: string;
    id?: string;
    parentId?: string;
    peer?: string;
    layer?: SpanLayer;
    component?: Component;
};
export declare type Log = {
    Timestamp: number;
    Data: {
        event: string;
        message: string | undefined;
        error_kind: string;
        stack: string;
    };
};
export default abstract class Span {
    readonly context: Context;
    readonly type: SpanType;
    readonly tags: Tag[];
    readonly logs: Log[];
    readonly refs: SegmentRef[];
    id: string;
    parentId: string;
    peer: string;
    operation: string;
    layer: SpanLayer;
    component: Component;
    inherit?: Component;
    startTime: number;
    endTime: number;
    errored: boolean;
    lastError: Error | null;
    _tenantCode: string;
    _userCode: string;
    _serviceVersion: string;
    constructor(options: SpanCtorOptions & {
        type: SpanType;
    });
    start(): void;
    stop(): void;
    async(): void;
    resync(): void;
    finish(segment: Segment): boolean;
    inject(): ContextCarrier;
    extract(carrier: ContextCarrier): this;
    hasTag(key: string): boolean;
    tag(tag: Tag): this;
    log(event: string, stack?: any, error_kind?: string, message?: string): this;
    error(error: any): this;
    refer(ref: SegmentRef): this;
}