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prefetchDNS

Resolves an origin's DNS ahead of use.

Resolves an origin's DNS ahead of use. Cheaper than preconnect; React's prefetchDNS.

Import#

ts
import { prefetchDNS } from "@shadow-js/web";

Signature#

ts
function prefetchDNS(href: string): void

Parameters#

Name Description
href An http(s) origin or URL.

Throws#

  • TypeError (production message SHADOW_RESOURCE_HINT_URL) for a URL that is not http(s) or relative.

Examples#

ts
import { prefetchDNS } from "@shadow-js/web";

prefetchDNS("https://api.example.com");