import { NextContext } from 'lemon-model';
import { SlackPostBody, MetricPostBody, CallbackData } from '../common/types';
import * as $lambda from 'aws-lambda';
declare type Context = $lambda.Context;
declare type RequestContext = $lambda.APIGatewayEventRequestContext;
/**
 * find ARN('lemon-hello-sns') via context information or environment.
 *
 * @param context   the current running context
 * @param NS        namespace to log
 */
export declare const getHelloArn: (context?: Context | RequestContext | NextContext, NS?: string) => string;
/**
 * report error via `lemon-hello-sns`.
 *
 * @param e             Error
 * @param context       Lambda Context
 * @param event         Origin Event Object.
 * @param data          Optinal Data(body).
 */
export declare const doReportError: (e: Error, context?: any, event?: any, data?: any) => Promise<string>;
/**
 * send callback data via web-hook endpoint.
 *
 * TODO - improve function identity.!! @191212.
 *
 * @param data  payload
 */
export declare const doReportCallback: (data: CallbackData, service?: string, context?: any) => Promise<string>;
/**
 * report slack message via `lemon-hello-sns`.
 *
 * @param channel       channel of slack
 * @param body          slack body
 * @param context       current running context.
 */
export declare const doReportSlack: (channel: string, body: SlackPostBody, context?: any) => Promise<string>;
/**
 * report metric-data like chart/graph to record via `lemon-metrics-sns`.
 *
 * @param ns        namespace like `[a-zA-Z][a-zA-Z0-9]+`
 * @param id        id value like `[a-zA-Z0-9][a-zA-Z0-9_:\-]+`
 * @param body      any body data
 * @param context   current running context.
 */
export declare const doReportMetric: (ns: string, id: string, body: MetricPostBody, context?: any) => Promise<string>;
/** ****************************************************************************************************************
 *  Common functions.
 ** ****************************************************************************************************************/
export interface ParrallelParam<T> {
    list: T[];
    context?: any;
    event?: any;
    message?: string;
    reportError?: boolean;
    ignoreError?: boolean;
}
export interface ParrallelCallback<T, U> {
    (node: T, index: number): U;
}
/**
 * parrallel actions in list (in batch-size = 10)
 *
 * **TODO** - improve return types by refering callback.
 *
 * @param param         any list
 * @param callback      (item)=>any | Promise<any>
 * @param size          (optional) size of parrallel (default 10)
 * @param pos           (optional) current pos (default 0)
 * @param result        (optional) result set in stacked.
 */
export declare const do_parrallel: <T, U>(param: ParrallelParam<T> | T[], callback: ParrallelCallback<T, U>, size?: number, pos?: number, result?: (Error | U)[]) => Promise<(Error | U)[]>;
export declare const DEFAULT_TIME_ZONE = 9;
export declare const convDate: (dt: string | number | Date) => Date;
/**
 * Convert input to time value (in number)
 *
 * @param {*} dt    see `conv_date()`
 * @param {*} name  name of property
 */
export declare const convDateToTime: (dt: string | number | Date) => number;
/**
 * Convert input (Date) to time-stamp (YYYY-MM-DD hh:mm:ss)
 * - consider with current time-zone.
 *
 * @param {*} dt
 */
export declare const convDateToTS: (dt: string | number | Date) => string;
export {};