import { flags } from '@oclif/command';
import JBrowseCommand from '../base';
export default class Upgrade extends JBrowseCommand {
    static description: string;
    static examples: string[];
    static args: ({
        name: string;
        required: boolean;
        description: string;
        default: string;
        hidden?: undefined;
    } | {
        name: string;
        required: boolean;
        description: string;
        hidden: boolean;
        default?: undefined;
    })[];
    static flags: {
        help: import("@oclif/parser/lib/flags").IBooleanFlag<void>;
        listVersions: import("@oclif/parser/lib/flags").IBooleanFlag<boolean>;
        tag: flags.IOptionFlag<string | undefined>;
        branch: flags.IOptionFlag<string | undefined>;
        nightly: import("@oclif/parser/lib/flags").IBooleanFlag<boolean>;
        url: flags.IOptionFlag<string | undefined>;
    };
    run(): Promise<void>;
}
