import './_version.js'; /** * If the browser supports Navigation Preload, then this will enable it. * * @param {string} [headerValue] Optionally, allows developers to * [override](https://developers.google.com/web/updates/2017/02/navigation-preload#changing_the_header) * the value of the `Service-Worker-Navigation-Preload` header which will be * sent to the server when making the navigation request. * * @memberof workbox-navigation-preload */ declare function enable(headerValue?: string): void; export { enable };