import { Config } from '../Config';
import { Result } from '../Result';
import { ValidatePathError } from '../errors/ValidatePathError';
/**
 * Helps getting information relevant to the JDK installed, including
 * the approprite environment needed to run Java commands on the JDK
 */
export declare class JdkHelper {
    private process;
    private config;
    private joinPath;
    private pathSeparator;
    private pathEnvironmentKey;
    /**
     * Constructs a new instance of JdkHelper.
     *
     * @param {NodeJS.Process} process information from the OS process
     * @param {Config} config the bubblewrap general configuration
     */
    constructor(process: NodeJS.Process, config: Config);
    /**
     * Runs the `java` command, passing args as parameters.
     */
    runJava(args: string[]): Promise<{
        stdout: string;
        stderr: string;
    }>;
    /**
     * Returns information from the JAVA_HOME, based on the config and platform.
     */
    getJavaHome(): string;
    /**
     * Returns information from the JAVA_HOME, based on the config and platform.
     * @param {Config} config The bubblewrap general configuration
     * @param {NodeJS.Process} process Information from the OS process
     */
    static getJavaHome(jdkPath: string, process: NodeJS.Process): string;
    private static getJoinPath;
    /**
     * Checks if the given jdkPath is valid.
     * @param {string} jdkPath the path to the jdk.
     */
    static validatePath(jdkPath: string, currentProcess?: NodeJS.Process): Promise<Result<string, ValidatePathError>>;
    /**
     * Returns information from the Java executable location, based on the config and platform.
     * @returns {string} the value where the Java executables can be found
     */
    getJavaBin(): string;
    /**
     * Returns a copy of process.env, customized with the correct JAVA_HOME and PATH.
     * @returns {NodeJS.ProcessEnv} an env object configure to run JDK commands
     */
    getEnv(): NodeJS.ProcessEnv;
}