type UpgradeCommand = readonly [string, ...string[]];
export type UpgradeFlowResult = {
    exitCode: number;
    status: "already-latest" | "registry-failed" | "install-failed" | "sync-warning" | "upgraded";
};
export type UpgradeSubprocessResult = {
    exitCode: number;
    stdout: string;
    stderr: string;
};
type UpgradeLogger = Pick<Console, "error" | "log" | "warn">;
type UpgradeDependencies = {
    fetchChangelog: (fromVersion: string, toVersion: string) => Promise<string | null>;
    fetchLatestVersion: () => Promise<string | null>;
    getCurrentVersion: () => Promise<string>;
    logger: UpgradeLogger;
    runSubprocess: (command: UpgradeCommand) => Promise<UpgradeSubprocessResult>;
};
declare const _default: import("citty").CommandDef<import("citty").ArgsDef>;
export default _default;
export declare function runUpgradeFlow(overrides?: Partial<UpgradeDependencies>): Promise<UpgradeFlowResult>;
export declare function buildInstallCommand(latestVersion: string): UpgradeCommand;
export declare function buildPostInstallSyncCommand(): UpgradeCommand;
export declare function buildPostInstallCompletionCommand(): UpgradeCommand;
export declare function fetchLatestVersion(): Promise<string | null>;
export declare function fetchChangelog(_fromVersion: string, _toVersion: string): Promise<string | null>;