/**
 * This file is part of the @egodigital/egoose distribution.
 * Copyright (c) e.GO Digital GmbH, Aachen, Germany (https://www.e-go-digital.com/)
 *
 * @egodigital/egoose is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, version 3.
 *
 * @egodigital/egoose is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
import * as Enumerable from 'node-enumerable';
import * as moment from 'moment-timezone';
import * as yargs from 'yargs-parser';
/**
 * Stores version information about the app.
 */
export interface AppVersion {
    /**
     * The last commit date. Contains (false), if failed.
     */
    date?: moment.Moment | false;
    /**
     * The last commit hash. Contains (false), if failed.
     */
    hash?: string | false;
}
/**
 * Describes a simple 'completed' action.
 *
 * @param {any} err The occurred error.
 * @param {TResult} [result] The result.
 */
export declare type CompletedAction<TResult> = (err: any, result?: TResult) => void;
/**
 * Result of 'exec()' function.
 */
export interface ExecResult {
    /**
     * The error stream.
     */
    stderr: string;
    /**
     * The standard stream.
     */
    stdout: string;
}
/**
 * An action for an async 'forEach'.
 *
 * @param {T} item The current item.
 * @param {number} index The zero-based index.
 */
export declare type ForEachAsyncAction<T> = (item: T, index: number) => void | Promise<void>;
/**
 * Options for 'getAppVersion()' function(s).
 */
export interface GetAppVersionOptions {
    /**
     * The custom working directory.
     */
    cwd?: string;
}
/**
 * A result of 'parseCommandLine()' function.
 */
export interface ParsedCommandLine {
    /**
     * The arguments.
     */
    arguments: yargs.Arguments;
    /**
     * The command.
     */
    command?: string;
}
/**
 * A predciate.
 *
 * @param {TValue} value The value to check.
 *
 * @return {boolean} Value matches predicate or not.
 */
export declare type Predicate<TValue = any> = (value: TValue) => boolean;
/**
 * Applies an object or value to a function.
 *
 * @param {TFunc} func The function to apply 'thisArg' to.
 * @param {any} thisArg The object or value to apply to 'func'.
 *
 * @return {TFunc} The new function.
 */
export declare function applyFuncFor<TFunc extends Function = Function>(func: TFunc, thisArg: any): TFunc;
/**
 * Returns an input value as array.
 *
 * @param {T|T[]} val The input value.
 * @param {boolean} [noEmpty] Remove values, which are (null) or (undefined).
 *
 * @return {T[]} The input value as array.
 */
export declare function asArray<T>(val: T | T[], noEmpty?: boolean): T[];
/**
 * Keeps sure that a value is a Moment instance (local timezone).
 *
 * @param {any} time The input value.
 *
 * @return {moment.Moment} The Moment instance.
 */
export declare function asLocal(time: any): moment.Moment;
/**
 * Keeps sure that a value is a Moment instance.
 *
 * @param {any} val The input value.
 *
 * @return {moment.Moment} The Moment instance.
 */
export declare function asMoment(val: any): moment.Moment;
/**
 * Keeps sure that a value is a Moment instance (UTC timezone).
 *
 * @param {any} time The input value.
 *
 * @return {moment.Moment} The Moment instance.
 */
export declare function asUTC(time: any): moment.Moment;
/**
 * Clones an object / value.
 *
 * @param {T} obj The value to clone.
 *
 * @return {T} The cloned value.
 */
export declare function cloneObj<T>(obj: T): T;
/**
 * Compare to values for sorting.
 *
 * @param {any} x The "left" value.
 * @param {any} y The "right" value.
 *
 * @return {number} The sort value.
 */
export declare function compareValues<T = any>(x: T, y: T): number;
/**
 * Compare to values for sorting by using a selector.
 *
 * @param {any} x The "left" value.
 * @param {any} y The "right" value.
 * @param {Function} selector The selector.
 *
 * @return {number} The sort value.
 */
export declare function compareValuesBy<T = any, U = T>(x: T, y: T, selector: (val: T) => U): number;
/**
 * Creates a simple 'completed' callback for a promise.
 *
 * @param {Function} resolve The 'succeeded' callback.
 * @param {Function} reject The 'error' callback.
 *
 * @return {CompletedAction<TResult>} The created action.
 */
export declare function createCompletedAction<TResult = any>(resolve: (value?: TResult | PromiseLike<TResult>) => void, reject?: (reason: any) => void): CompletedAction<TResult>;
/**
 * Promise version of `child_process.exec()` function.
 *
 * @param {string} command The command to execute.
 *
 * @return {Promise<ExecResult>} The promise with the result.
 */
export declare function exec(command: string): Promise<ExecResult>;
/**
 * An async 'forEach'.
 *
 * @param {Enumerable.Sequence<T>} seq The sequence or array to iterate.
 * @param {ForEachAsyncAction<T>} action The action to invoke.
 */
export declare function forEachAsync<T>(seq: Enumerable.Sequence<T>, action: ForEachAsyncAction<T>): Promise<void>;
/**
 * Detects version information about the current app via Git (synchronous).
 *
 * @param {GetAppVersionOptions} [opts] Custom options.
 *
 * @return {AppVersion} Version information.
 */
export declare function getAppVersionSync(opts?: GetAppVersionOptions): AppVersion;
/**
 * Alias of 'uuid()' function.
 */
export declare function guid(version?: string): string;
/**
 * Checks if the string representation of a value is an empty string or not.
 *
 * @param {any} val The value to check.
 *
 * @return {boolean} If empty string or not.
 */
export declare function isEmptyString(val: any): boolean;
/**
 * Normalizes a value to a string, which is comparable.
 *
 * @param {any} val The value to normalize.
 *
 * @return {string} The normalized string.
 */
export declare function normalizeString(val: any): string;
/**
 * Returns the current time.
 *
 * @param {string} [timezone] The custom timezone to use.
 *
 * @return {Moment.Moment} The current time.
 */
export declare function now(timezone?: string): moment.Moment;
/**
 * Parses a value as string of a command line input.
 *
 * @param {any} cmd The command line input.
 *
 * @return {ParsedCommandLine} The parsed data.
 */
export declare function parseCommandLine(cmd: any): ParsedCommandLine;
/**
 * Generates a random string.
 *
 * @param {number} size The size of the result string.
 * @param {string} [chars] The custom list of characters.
 *
 * @return {Promise<string>} The promise with the random string.
 */
export declare function randChars(size: number, chars?: string): Promise<string>;
/**
 * Generates a random string.
 *
 * @param {number} size The size of the result string.
 * @param {string} [chars] The custom list of characters.
 *
 * @return {string} The random string.
 */
export declare function randCharsSync(size: number, chars?: string): string;
/**
 * Returns a value as "real" boolean.
 *
 * @param {any} val The input value.
 * @param {boolean} [defaultValue] The value to return if 'val' is (null) or (undefined).
 *
 * @return {boolean} The output value.
 */
export declare function toBooleanSafe(val: any, defaultValue?: boolean): boolean;
/**
 * Converts a value to a string (if needed), which is not (null) and not (undefined).
 *
 * @param {any} val The value to convert.
 * @param {string} [defaultValue] The custom default value if 'val' is (null) or (undefined).
 *
 * @return {string} 'val' as string.
 */
export declare function toStringSafe(val: any, defaultValue?: string): string;
/**
 * Returns the current time in UTC.
 *
 * @return {moment.Moment} The current UTC time.
 */
export declare function utc(): moment.Moment;
/**
 * Generates an unique ID.
 *
 * @param {string} [version] The custom version to use. Default: 4
 * @param {any[]} []
 *
 * @return {string} The new GUID / unique ID.
 */
export declare function uuid(version?: string, ...args: any[]): string;
export * from './apis/host';
export * from './apis/index';
export * from './apis/statistics';
export * from './apis/validation';
export * from './azure/storage';
export * from './cache';
export * from './cache/redis';
export * from './dev';
export * from './diagnostics/logger';
export * from './diagnostics/stopwatch';
export * from './env';
export * from './events';
export * from './fs';
export * from './geo';
export * from './http';
export * from './http/websockets';
export * from './mail';
export * from './mongo/index';
export * from './mongo/statistics';
export * from './oauth/microsoft';
export * from './queues/index';
export * from './schemas';
export * from './statistics';
export * from './streams';
export * from './strings';
export * from './system';
export * from './zip/builder';
export { asEnumerable, from, isEnumerable, isSequence, popFrom, random, range, repeat, shiftFrom } from 'node-enumerable';
export { setupSwaggerUIFromSourceFiles } from 'swagger-jsdoc-express';