/** Well-known filename the backend writes its actual port to. */
export declare const DEV_PORT_FILENAME = ".rebase-dev-port";
/**
 * Compute a deterministic port from the project root path.
 * Range: 3001–3999 (avoids privileged ports and common services).
 * Two different project directories will almost always get different ports.
 */
export declare function getProjectPort(projectRoot: string): number;
export declare function resolveStartPort(projectRoot: string, explicitPort?: number): number;
/**
 * The flags `rebase dev` takes.
 *
 * Exported so `dev.test.ts` can assert that every short alias the help
 * advertises is declared here: the help said `--port, -p` while the spec has
 * only ever declared `-P`, so `rebase dev -p 4000` typed straight off the help
 * page passed `4000` as a positional and started on the default port.
 */
export declare const DEV_FLAGS: {
    readonly "--backend-only": BooleanConstructor;
    readonly "--frontend-only": BooleanConstructor;
    readonly "--port": NumberConstructor;
    readonly "--generate": BooleanConstructor;
    readonly "-b": "--backend-only";
    readonly "-f": "--frontend-only";
    readonly "-P": "--port";
    readonly "-g": "--generate";
};
export declare function devCommand(rawArgs: string[]): Promise<void>;