export declare const CONNECTION_ID_HEADER = "X-Connection-ID";
export declare const WORKFLOW_ID_HEADER = "X-Workflow-ID";
export declare const TASK_QUEUE_HEADER = "X-Task-Queue";
export declare const CORRELATION_ID_HEADER = "X-Correlation-ID";
export declare const SESSION_ID_HEADER = "X-Session-ID";
export declare const VERIFICATION_HEADER = "X-Verification-Key";
export declare const AXIOM_AUTH_TOKEN_ENV = "AXIOM_AUTH_TOKEN";
export declare const AXIOM_ORG_ID_ENV = "AXIOM_ORG_ID";
export declare const AXIOM_DATASET_ENV = "AXIOM_DATASET";
export declare const LOG_ENV = "LOG";
export type LogLevel = 'info' | 'log' | 'error' | 'debug' | 'warn';
export type LogBindings = {
    [LOG_ENV]?: string;
    [AXIOM_AUTH_TOKEN_ENV]?: string;
    [AXIOM_ORG_ID_ENV]?: string;
    [AXIOM_DATASET_ENV]?: string;
    NODE_ENV?: string;
    IS_LOCAL_DEV?: string;
    MACHINE_NAME?: string;
};
export type LogFn = (message: any, extra?: Record<string, any>) => void;
export type ErrorLogFn = (message: any, errorOrExtra?: Error | unknown | Record<string, any>, extra?: Record<string, any>) => void;
export type LogFns = {
    error: ErrorLogFn;
    info: LogFn;
    debug: LogFn;
    warn: LogFn;
};
export type Log = LogFns & {
    child: (data: ChildLogOptions) => Log;
    addContext: (data: Record<string, any>) => void;
};
export type ChildLogOptions = {
    correlationId?: string;
    name?: string;
    request?: any;
    context?: Record<string, any>;
};
type Res = Response | {
    status: number;
    statusText?: string;
    headers?: Record<string, string>;
    body?: any;
    response?: Response;
};
export type BaseLog = Log & {
    flush(): Promise<void> | void;
};
export type WorkerLog = BaseLog & {
    respond(response: Res | Promise<Res> | (() => Res | Promise<Res>)): Promise<Response>;
};
export type RequestLike = {
    headers: {
        get: (key: string) => string | null;
    };
    method: string;
    url: string;
    json: () => Promise<any>;
};
export type LogTags = {
    sessionId: string;
    correlationId: string;
    environment?: 'development' | 'production';
    type?: 'worker' | 'durableObject';
    workerId?: string;
    app?: string;
    version?: string;
    name?: string;
};
export type ConsoleLogFn = (arg: {
    formatted: string;
    message: string;
    extra: Record<string, any>;
    tags: LogTags;
    context: Record<string, any>;
    level: LogLevel;
    error?: Error;
}) => void;
export type ConsoleLog = boolean | 'color' | ConsoleLogFn;
export {};