/// <reference types="node" />
import { IModuleHook, Module } from "../../../container";
import { ErrorChain } from "../../error";
/** Assets files may be cached when read. */
export interface IAssetsCache {
    [key: string]: Buffer | string;
}
/** Assets log names. */
export declare enum EAssetsLog {
    Information = "Assets.Information"
}
/** Assets error codes. */
export declare enum EAssetsError {
    ReadFile = "AssetsError.ReadFile",
    JsonParse = "AssetsError.JsonParse",
    ReadDirectory = "AssetsError.ReadDirectory"
}
/** Assets error class. */
export declare class AssetsError extends ErrorChain {
    constructor(code: EAssetsError, cause?: Error, context?: object);
}
/** Assets file read options. */
export interface IAssetsReadOptions {
    encoding?: string;
    cache?: boolean;
}
/** Assets environment variable names. */
export declare enum EAssetsEnv {
    /** Assets directory path (required). */
    Path = "ASSETS_PATH"
}
/** Assets read only files module. */
export declare class Assets extends Module {
    /** Default module name. */
    static readonly moduleName: string;
    /** Absolute path to assets files directory. */
    readonly envPath: string;
    /** Internal assets cache. */
    protected readonly assetsCache: IAssetsCache;
    moduleUp(...args: IModuleHook[]): Promise<void>;
    /** Returns true if target file is cached. */
    isCached(target: string, encoding?: string): boolean;
    readFile(target: string, options?: {
        cache?: boolean;
    }): Promise<Buffer>;
    readFile(target: string, options: IAssetsReadOptions): Promise<string>;
    /** Read asset file contents and parse JSON object. */
    readJson<T>(target: string, options?: IAssetsReadOptions): Promise<T>;
    /** Read contents of assets directory. */
    readDirectory(target?: string): Promise<string[]>;
    protected assetsRead(target: string, options?: IAssetsReadOptions): Promise<string | Buffer>;
}