/**
 * The one outcome of an in-place update that a caller must not treat as a plain failure.
 *
 * `rebuildComponents` does all of its fallible work before tearing anything down, and keeps a
 * rollback to the previous recipe as a backstop. Almost every failure therefore ends with the
 * runtime healthy on its old configuration — a failed update, nothing more.
 *
 * This error means the backstop ALSO failed: the new recipe would not build, and neither would the
 * one that was running a moment ago. The wallet still holds whatever positions it held, and nothing
 * is watching them — no scanners, no exit engine, no stop being maintained. It is the single state
 * the update verb exists to avoid, and it needs a human, so it is a distinct type rather than a
 * message a caller has to pattern-match.
 */
export declare class RuntimeRebuildRollbackFailedError extends Error {
    readonly code = "E_UPDATE_ROLLBACK_FAILED";
    /** Wallet whose book is now unmanaged. Named so an operator can act without reading a log. */
    readonly address: string;
    /** Why the new recipe failed to build. */
    readonly rebuildError: unknown;
    /** Why the previous recipe could not be restored. */
    readonly rollbackError: unknown;
    constructor(address: string, rebuildError: unknown, rollbackError: unknown);
}
/** True when a thrown value is the unmanaged-book outcome above. */
export declare function isRollbackFailure(err: unknown): err is RuntimeRebuildRollbackFailedError;
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