import { APIGatewayEvent, APIGatewayEventRequestContext, AuthResponseContext } from 'aws-lambda';
import { EpsilonLoggerConfig } from '../config/epsilon-logger-config.js';
import { BasicAuthToken } from './auth/basic-auth-token.js';
import { LoggerLevelName } from '@bitblit/ratchet-common/logger/logger-level-name';
export declare class EventUtil {
    static readonly LOCAL_REGEX: RegExp[];
    static readonly NON_ROUTABLE_REGEX: RegExp[];
    private constructor();
    static extractStage(event: APIGatewayEvent): string;
    static extractHostHeader(event: APIGatewayEvent): string;
    static extractProtocol(event: APIGatewayEvent): string;
    static extractApiGatewayStage(event: APIGatewayEvent): string;
    static extractRequestContext(event: APIGatewayEvent): APIGatewayEventRequestContext;
    static extractAuthorizer(event: APIGatewayEvent): AuthResponseContext;
    static ipAddressChain(event: APIGatewayEvent): string[];
    static ipAddress(event: APIGatewayEvent): string;
    static extractFullPath(event: APIGatewayEvent, overrideProtocol?: string): string;
    static extractFullPrefix(event: APIGatewayEvent, overrideProtocol?: string): string;
    static jsonBodyToObject(evt: APIGatewayEvent): any;
    static calcLogLevelViaEventOrEnvParam(curLevel: LoggerLevelName, event: APIGatewayEvent, rConfig: EpsilonLoggerConfig): LoggerLevelName;
    static fixStillEncodedQueryParams(event: APIGatewayEvent): void;
    static applyTokenToEventForTesting(event: APIGatewayEvent, jwtToken: string): void;
    static extractBasicAuthenticationToken(event: APIGatewayEvent, throwErrorOnMissingBad?: boolean): BasicAuthToken;
    static eventIsAGraphQLIntrospection(event: APIGatewayEvent): boolean;
    static extractAuthorizationHeaderCaseInsensitive(evt: APIGatewayEvent): string;
    static extractBearerTokenFromEvent(evt: APIGatewayEvent): string;
    static hostMatchesRegexInList(host: string, list: RegExp[], caseSensitive?: boolean): boolean;
    static hostIsLocal(host: string): boolean;
    static hostIsLocalOrNotRoutableIP4(host: string): boolean;
}