/**
 * Storybook stand-in for the VTBA form runtime (ac-react-app formBuilder.ts),
 * which isn't part of this package. Reproduces the parts the download library
 * relies on: validate on submit, "submit" for a while, then dispatch
 * vtba-form:success (cancelable) or vtba-form:error on [data-vtba-form]. If
 * nothing cancels the success event, it shows the default success message like
 * the real runtime. Not exported from the package.
 */
export interface MockVtbaFormRuntimeOptions {
    outcome?: "success" | "error";
    latencyMs?: number;
    /** Receives what would be sent to HubSpot (data-hs-property || name → value). */
    onSubmit?: (fields: Record<string, string>) => void;
}
export declare function mockVtbaFormRuntime(scope: ParentNode, options?: MockVtbaFormRuntimeOptions): () => void;