import * as u from '../utils.js';
export type Result = ReturnType<typeof parse>;
export declare function parse(argv: Iterable<string>): {
    cmd: "help";
    info?: never;
    unknown?: never;
} | {
    cmd: "gen";
    info: {
        type: "help";
        entropy?: never;
        err?: never;
    } | {
        type: "normal";
        entropy: Uint8Array<ArrayBuffer>;
        err?: never;
    } | {
        type: "error";
        err: Error;
        entropy?: never;
    };
    unknown?: never;
} | {
    cmd: "extract";
    info: {
        type: "help";
        sentence?: never;
        show?: never;
        bin_with_cs?: never;
        bin_cs_only?: never;
        err?: never;
    } | {
        type: "normal";
        sentence: readonly string[];
        show: typeof u.encode_hex | (<T>(a: T) => T);
        bin_with_cs: boolean | undefined;
        bin_cs_only: boolean | undefined;
        err?: never;
    } | {
        type: "error";
        err: Error;
        sentence?: never;
        show?: never;
        bin_with_cs?: never;
        bin_cs_only?: never;
    };
    unknown?: never;
} | {
    unknown: string;
    cmd?: never;
    info?: never;
};