/// <reference types="node" />
import * as https from 'https';
import { DownloadPlatform } from './download';
import { TestOptions } from './runTest';
export declare let systemDefaultPlatform: DownloadPlatform;
export declare function isInsiderVersionIdentifier(version: string): boolean;
export declare function isStableVersionIdentifier(version: string): boolean;
export declare function getVSCodeDownloadUrl(version: string, platform?: DownloadPlatform): string;
export declare function urlToOptions(url: string): https.RequestOptions;
export declare function downloadDirToExecutablePath(dir: string, platform: DownloadPlatform): string;
export declare function insidersDownloadDirToExecutablePath(dir: string, platform: DownloadPlatform): string;
export declare function insidersDownloadDirMetadata(dir: string, platform: DownloadPlatform): {
    version: any;
    date: Date;
};
export interface IUpdateMetadata {
    url: string;
    name: string;
    version: string;
    productVersion: string;
    hash: string;
    timestamp: number;
    sha256hash: string;
    supportsFastUpdate: boolean;
}
export declare function getInsidersVersionMetadata(platform: string, version: string): Promise<IUpdateMetadata>;
export declare function getLatestInsidersMetadata(platform: string): Promise<IUpdateMetadata>;
/**
 * Resolve the VS Code cli path from executable path returned from `downloadAndUnzipVSCode`.
 * Usually you will want {@link resolveCliArgsFromVSCodeExecutablePath} instead.
 */
export declare function resolveCliPathFromVSCodeExecutablePath(vscodeExecutablePath: string, platform?: DownloadPlatform): string;
/**
 * Resolve the VS Code cli arguments from executable path returned from `downloadAndUnzipVSCode`.
 * You can use this path to spawn processes for extension management. For example:
 *
 * ```ts
 * const cp = require('child_process');
 * const { downloadAndUnzipVSCode, resolveCliArgsFromVSCodeExecutablePath } = require('@vscode/test-electron')
 * const vscodeExecutablePath = await downloadAndUnzipVSCode('1.36.0');
 * const [cli, ...args] = resolveCliArgsFromVSCodeExecutablePath(vscodeExecutablePath);
 *
 * cp.spawnSync(cli, [...args, '--install-extension', '<EXTENSION-ID-OR-PATH-TO-VSIX>'], {
 *   encoding: 'utf-8',
 *   stdio: 'inherit'
 * });
 * ```
 *
 * @param vscodeExecutablePath The `vscodeExecutablePath` from `downloadAndUnzipVSCode`.
 */
export declare function resolveCliArgsFromVSCodeExecutablePath(vscodeExecutablePath: string, options?: Pick<TestOptions, 'reuseMachineInstall' | 'platform'>): string[];
/** Predicates whether arg is undefined or null */
export declare function isDefined<T>(arg: T | undefined | null): arg is T;
/**
 * Validates the stream data matches the given length and checksum, if any.
 *
 * Note: md5 is not ideal, but it's what we get from the CDN, and for the
 * purposes of self-reported content verification is sufficient.
 */
export declare function validateStream(readable: NodeJS.ReadableStream, length: number, sha256?: string): Promise<void>;
/** Gets a Buffer from a Node.js stream */
export declare function streamToBuffer(readable: NodeJS.ReadableStream): Promise<Buffer>;
/** Gets whether child is a subdirectory of the parent */
export declare function isSubdirectory(parent: string, child: string): boolean;
/**
 * Wraps a function so that it's called once, and never again, memoizing
 * the result unless it rejects.
 */
export declare function onceWithoutRejections<T, Args extends unknown[]>(fn: (...args: Args) => Promise<T>): (...args: Args) => Promise<T>;
export declare function killTree(processId: number, force: boolean): Promise<void>;