export declare type ExitStatus = number | Error;
export declare class ShellPromise extends Promise<ExitStatus> {
}
export declare class ExitError extends RangeError {
    cmdline: string;
    code: number;
    constructor(cmdline: string, code: number);
}
export declare class SignalError extends Error {
    cmdline: string;
    signal: string;
    constructor(cmdline: string, signal: string);
}
export interface CmdFunction {
    (...args: string[]): ShellPromise;
}
export declare type ShellFunc = () => Promise<void>;
export declare type Program = string | ShellFunc | Cmd;
export interface Cmd extends CmdFunction {
    prog: Program;
    args?: string[];
}
export declare function cmd(prog: Program, ...args: string[]): Cmd;
export declare function subshell(body: ShellFunc): Cmd;
export interface ShellListener {
    started?(info: JobInfo): void;
    finished?(info: JobInfo, status: ExitStatus): void;
    failed?(info: JobInfo, err: Error): void;
}
export declare class JobInfo {
    shell: Shell;
    ident: number;
    context: Context;
    prog: Program;
    args: string[];
    pid: number;
    readonly cmdline: string;
}
export declare type Stream = any;
export declare class Context {
    dir?: string;
    env?: object;
    throwFlag?: boolean;
    traceFlag?: boolean;
    detachedFlag?: boolean;
    '<'?: string | Stream;
    '>'?: string | Stream;
    '>&'?: string | Stream;
    '>>'?: string | Stream;
    '>>&'?: string | Stream;
    listener?: ShellListener;
    listeners?: ShellListener[];
}
export declare type ExecArg = string | Context;
export declare function exec(p: Program, ...arglist: ExecArg[]): ShellPromise;
export declare function output(p: Program, ...arglist: ExecArg[]): Promise<string>;
export declare function cmdline(p: Program, ...arglist: ExecArg[]): string;
export interface Shell {
    context: Context;
    listenerAdd(listener: ShellListener): void;
    listenerDel(listener: ShellListener): ShellListener;
    listenerDelAll(): void;
    result(value: ExitStatus): ExitStatus;
    exit(code: number): void;
}
export declare function shell(): Shell;