export type PrefetchStrategy = "hover" | "viewport" | "load" | "tap";
export interface PrefetchInitOptions {
    prefetchAll?: boolean;
    defaultStrategy?: PrefetchStrategy;
}
export interface PrefetchOptions {
    ignoreSlowConnection?: boolean;
    with?: "link" | "fetch";
}
/**
 * Reset all module-level state. Exported for test isolation only — not part of
 * the public API and not re-exported from any barrel.
 */
export declare function __resetForTests(): void;
/**
 * Public prefetch function. Idempotent per href.
 */
export declare function prefetch(url: string, opts?: PrefetchOptions): void;
/**
 * Initialize the prefetch module.
 *
 * Idempotent — multiple calls are safe. The module-level `initialized` flag
 * ensures listeners are registered exactly once.
 *
 * DISABLED-FLAG CONTRACT: if `<meta name="zfb-prefetch-disabled" content="true">`
 * is present in the document at init() time, this function is a no-op.
 */
export declare function init(options?: PrefetchInitOptions): void;