import { Context, ProxyResult } from 'aws-lambda';
import { EpsilonInstance } from '../epsilon-instance';
import { InternalBackgroundEntry } from '../background/internal-background-entry';
import { InterApiEntry } from '../inter-api/inter-api-entry';
export declare class ContextUtil {
    private static CURRENT_EPSILON_REFERENCE;
    private static CURRENT_CONTEXT;
    private static CURRENT_EVENT;
    private static CURRENT_LOG_VARS;
    private static CURRENT_PROCESS_LABEL;
    private static CURRENT_OVERRIDE_TRACE_ID;
    private static CURRENT_OVERRIDE_TRACE_DEPTH;
    private constructor();
    static initContext(epsilon: EpsilonInstance, evt: any, ctx: Context, processLabel: string): void;
    static clearContext(): void;
    static setOverrideTrace(traceId: string, traceDepth: number): void;
    static setOverrideTraceFromInternalBackgroundEntry(entry: InternalBackgroundEntry<any>): void;
    static setOverrideTraceFromInterApiEntry(interApiEntry: InterApiEntry<any>): void;
    static addHeadersToRecord(input: Record<string, any>, depthOffset?: number): void;
    static addTraceToProxyResult(pr: ProxyResult): void;
    static addTraceToHttpRequestInit(ri: RequestInit): void;
    static setProcessLabel(processLabel: string): void;
    static currentRequestId(): string;
    static remainingTimeMS(): number;
    static currentProcessLabel(): string;
    private static traceHeaderName;
    private static traceDepthHeaderName;
    static currentTraceId(): string;
    static currentTraceDepth(): number;
    static addLogVariable(name: string, val: string | number | boolean): void;
    static fetchLogVariable(name: string): string | number | boolean;
    static fetchLogVariables(): Record<string, string | number | boolean>;
}