import { FilesData, IUnpackJSAPI } from '@emscripten-forge/untarjs';
import { ILock, ILogger, ISolvedPackage, TSharedLibs } from './types';
export declare function parseEnvYml(envYml: string): {
    prefix: string;
    specs: string[];
    pipSpecs: string[];
    channels: string[];
};
export declare function getParentDirectory(filePath: string): string;
export declare function getSharedLibs(files: FilesData, prefix: string): TSharedLibs;
export declare function checkWasmMagicNumber(uint8Array: Uint8Array): boolean;
export declare function isCondaMeta(files: FilesData): boolean;
export declare function saveFilesIntoEmscriptenFS(FS: any, files: FilesData, prefix: string): void;
export declare function removeFilesFromEmscriptenFS(FS: any, paths: string[]): void;
export interface IUntarCondaPackageOptions {
    /**
     * The URL to the package
     */
    url: string;
    /**
     * The data of the package
     */
    data?: Uint8Array;
    /**
     * The current untarjs instance
     */
    untarjs: IUnpackJSAPI;
    /**
     * Whether the functino will be verbose or not
     */
    verbose?: boolean;
    /**
     * Whether or not to generate conda-meta files
     */
    generateCondaMeta?: boolean;
    /**
     * The prefix for relocation
     */
    relocatePrefix?: string;
    /**
     * The environment Python version, if it is there
     */
    pythonVersion?: number[];
}
/**
 * Untar conda or empacked package, given a URL to it. This will also do prefix relocation.
 * @param options The functino options
 * @returns the files to install
 */
export declare function untarCondaPackage(options: IUntarCondaPackageOptions): Promise<FilesData>;
/**
 * Split package info from actual package files
 * @param filename The original filename
 * @param files The package files
 * @param untarjs The current untarjs instance
 * @returns Splitted files between info and actual package files
 */
export declare function splitPackageInfo(filename: string, files: FilesData, untarjs: IUnpackJSAPI): Promise<{
    info: FilesData;
    pkg: FilesData;
}>;
/**
 * Given a conda package, get the generated conda meta files
 * @param files The conda package files
 * @param verbose Whether to be verbose or not
 * @returns The generated conda-meta files
 */
export declare function getCondaMetaFile(files: FilesData, verbose: boolean): FilesData;
export declare function formatChannels(channels?: string[], logger?: ILogger): Pick<ILock, 'channelInfo' | 'channels'>;
export declare function computePackageChannel(pkg: ISolvedPackage, formattedChannels: Pick<ILock, 'channelInfo' | 'channels'>): string;
export declare function computePackageUrl(pkg: ISolvedPackage, filename: string, channels: ILock['channelInfo']): string;
export declare function join(...parts: string[]): string;
export declare function cleanUrl(url: string): string;
export declare function computeLockId(envDef: string): string;