/// <reference types="node" />
import { Log } from './Log';
import { WebManifestIcon } from './types/WebManifest';
import { Orientation } from './TwaManifest';
export declare function executeFile(cmd: string, args: string[], env: NodeJS.ProcessEnv, log?: Log, cwd?: string): Promise<{
    stdout: string;
    stderr: string;
}>;
export declare function execInteractive(cwd: string, args: string[], env: NodeJS.ProcessEnv): Promise<number>;
export declare function execute(cmd: string[], env: NodeJS.ProcessEnv, log?: Log): Promise<{
    stdout: string;
    stderr: string;
}>;
export declare function unzipFile(zipFile: string, destinationPath: string, deleteZipWhenDone?: boolean): Promise<void>;
export declare function untar(tarFile: string, destinationPath: string, deleteZipWhenDone?: boolean): Promise<void>;
/**
 * Fetches data for the largest icon from the web app manifest with a given purpose.
 * @param {Array<WebManifestIcon>|undefined} icons List of the manifest icons.
 * @param {string} purpose Purpose filter that the icon must match.
 * @param {number} minSize The minimum required icon size enforced id provided.
 */
export declare function findSuitableIcon(icons: WebManifestIcon[] | undefined, purpose: string, minSize?: number): WebManifestIcon | null;
/**
 * Fetches data for the six to five icon from the web app manifest.
 * @param {Array<WebManifestIcon>|undefined} icons List of the manifest icons.
 * @param {string} purpose Purpose filter that the icon must match.
 * @param {number} minSize The minimum required icon size enforced id provided.
 */
export declare function findSixToFiveIcon(icons: WebManifestIcon[] | undefined, minSize?: number): WebManifestIcon | null;
export declare function generateAccessStartURL(webManifestUrl: string, startUrl: string): string;
export declare function isSameOrigin(url1: string, url2: string): boolean;
/**
 * 生成manifestId,算法：https://w3c.github.io/manifest/#id-member
 * 处理id成员，给定有序映射json、有序映射manifest所需步骤如下：
 *
 * 1、将manifest["id"]设置为manifest["start_url"]。
 * 2、如果json["id"]的类型不是字符串，就返回。
 * 3、如果json["id"]是一个空字符串，就返回。
 * 4、让base origin成为manifest["start_url"]的来源(origin)。
 * 5、使用base origin作为基本URL，从json["id"]解析出id的结果。
 * 6、如果id解析失败，就返回。
 * 7、如果id与manifest["start_url"]不是相同的源(origin)，就返回。
 * 8、将manifest["id"]设置为id。
 */
export declare function generateManifestId(id: string | undefined, startUrl: string, webManifestUrl: string): string;
export declare function generatePackageId(id: string, startUrl: string, webManifestUrl: string): string | null;
/**
 * Validates if a string is not null and not empty.
 * @param input the string to be validated
 * @param fieldName the field represented by the string
 * @returns {string | null} a description of the error or null if no erro is found.
 */
export declare function validateNotEmpty(input: string | null | undefined, fieldName: string): string | null;
/**
 * Escapes a string that will be written to the Gradle file. The characters need to be escaped
 * multiple times, as they also need to be escaped inside the Gradle file.
 *
 * As an example, "Andre's Code" needs to be written as "Andre\\\'s Code" to the Gradle file, so
 * it is properly escaped when passed to AAPT.
 */
export declare function escapeGradleString(input: string): string;
/**
 * Removes a file or directory. If the path is a directory, recursively deletes files and
 * directories inside it.
 */
export declare function rmdir(path: string): Promise<void>;
/**
 * Given a JSON string, the function returns an escaped representation of the string.
 * eg: Turns every " instance into \\".
 *
 * @param {string} stringToReplace the string before the manipulation.
 * @returns {string} the string after the manipulation.
 */
export declare function escapeJsonString(stringToReplace: string): string;
export declare function toAndroidScreenOrientation(orientation: Orientation): string;
/**
 * Escapes a string that will be used inside a double quoted block in the shell. The characters
 * ", $, `, and \ need escaping even when the string is surrounded by double quotes.
 */
export declare function escapeDoubleQuotedShellString(input: string): string;
export declare function validateVersionName(input: string): string | null;
export declare function generateRandomString(length: number): string;
export declare function removeDictionary(path: string): Promise<void>;
export declare function isBase64(iconUrl: string): boolean;
export declare function isImageBuffer(obj: any): boolean;