Preconnect to a URL. This can be used to improve performance by pre-resolving the DNS and establishing a TCP connection before the request is made.
This is a custom property that is not part of the Fetch API specification.
Symbol
fetch.preconnect
function preconnect(url: string | URL, options?: { dns: boolean; http: boolean; https: boolean; tcp: boolean }): void
@param url
The URL to preconnect to
@param options
Options for the preconnect
Referenced types
class URL
The URL interface represents an object providing static methods used for creating object URLs.