import { Fs } from './validator';
export declare type Command = string | null | undefined | (() => Promise<void>);
export interface Cp {
    execute(command: string): Promise<number>;
}
export declare type Recipe = (target: string, newerPrereqs: string[]) => Command[];
export interface Rule {
    phony?: boolean;
    prereqs?: string[];
    recipe?: Recipe;
}
export interface Rules {
    [target: string]: Rule;
}
export declare class Generator {
    private readonly cp;
    private readonly fs;
    private readonly log;
    constructor(cp: Cp, fs: Fs, log: (message: string) => void);
    generate(goal: string, rules: Rules): Promise<void>;
    private sortTargets;
}