import Joi from '@hapi/joi';
import execa from 'execa';
export interface TaskOptionsInput {
    basePath?: string;
    verbosity?: number;
    dryRun?: boolean;
}
export interface TaskOptions {
    basePath: string;
    verbosity: number;
    dryRun: boolean;
}
export declare enum LogLevel {
    Panic = 50,
    Error = 40,
    Warn = 30,
    Info = 20,
    Debug = 10,
    Trace = 0
}
export declare const taskOptionsSchema: Joi.ObjectSchema;
export declare abstract class Task {
    protected readonly name: string;
    protected readonly opts: TaskOptions;
    protected shouldSkip: boolean;
    constructor(name: string, opts?: TaskOptionsInput);
    abstract run(): Promise<void>;
    protected prepareOptions(opts: TaskOptionsInput): TaskOptions;
    protected getOptionsSchema(): Joi.Schema;
    protected getPath(relativePath: string): string;
    protected requireBin(binName: string): void;
    protected skip(): void;
    protected exec(cmd: string, args?: string[], canFail?: boolean): Promise<execa.ExecaReturnValue<string> | null>;
    report(level: LogLevel, ...reportData: any[]): void;
    protected getOpts(): TaskOptions;
    static getLogLevel(level: string): LogLevel;
}
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