type AutofillableField = HTMLInputElement | HTMLTextAreaElement;
/**
 * Detects browser autofill on an input or textarea and syncs the value.
 *
 * Browsers do not fire the `input` event when autofilling, so v-model stays
 * out of sync with the DOM (empty state, label does not float, value cleared
 * on next re-render). This attaches a CSS animation on `:-webkit-autofill` /
 * `:autofill` and listens to `animationstart` to detect autofill and emit
 * the value.
 *
 * @param field The input or textarea element to watch
 * @param onSync Callback invoked with the autofilled value
 * @returns Cleanup function to stop watching
 */
export declare function onAutofillSync(field: AutofillableField, onSync: (value: string) => void): () => void;
export {};