import type { Command } from 'commander';
import type { CliOptionsType, EnvVarsType } from '../types/env';
export declare function collectEnvVar(value: string, memo?: EnvVarsType): EnvVarsType;
export declare function parseBooleanOption(value: unknown, defaultValue?: boolean): boolean;
export declare function normalizeCliOptions(options?: CliOptionsType): CliOptionsType;
export declare function registerEnvOption(command: Command): Command;
export declare function registerCommonOptions(command: Command): Command;
export declare function registerUnsupportedCommand(program: Command, name: string, description: string): void;