import * as _optique_core from '@optique/core';

declare const upgradeEpubCommand: _optique_core.Parser<"sync", {
    readonly action: "upgrade-epub";
    readonly input: string;
    readonly output: string;
} & {
    readonly removeNcx: boolean;
}, ["matched", string] | ["parsing", Record<string | symbol, unknown>] | undefined>;

export { upgradeEpubCommand };