A collection of functions to work with http.
Generates a cache-control header object from the provided options.
If enabled: false, the cache-control header will be
'private, no-cache, noindex, max-age=0, must-revalidate'.
type CacheHeadersOptions = {
// Disables the cache entirely
enabled?: boolean;
// All cache-control directives
maxAge?: number;
sMaxAge?: number;
staleWhileRevalidate?: number;
staleIfError?: number;
private?: boolean;
public?: boolean;
noCache?: boolean;
noStore?: boolean;
noTransform?: boolean;
immutable?: boolean;
mustRevalidate?: boolean;
proxyRevalidate?: boolean;
mustUnderstand?: boolean;
};
const cacheControl = cacheHeaders({
// ...
});
return new Response('', {
headers: cacheControl
});Returns true if the response is a redirect response.
const isRedirectResponse: (response: Response) => boolean;Get the language from the request.
const getLangFromRequest = <Language extends string>(
request: Request,
{ supportedLanguages: Language[]; defaultLanguage: Language }
) => Language;Given a string of the form "en,fr;q=0.9,de;q=0.8", returns an array of AcceptLanguageEntry ordered
by priority. This is mostly used to parse the 'Accept-Language' header.
type AcceptLanguageEntry = {
lang: string;
priority: number;
};
const parseAcceptLanguage = (acceptLanguage: string): Maybe<AcceptLanguageEntry[]>Get Vercel headers from a request.
const getVercelIpHeaders: (request: Request) => {
country: Maybe<string>;
region: Maybe<string>;
city: Maybe<string>;
latitude: Maybe<string>;
longitude: Maybe<string>;
timezone: Maybe<string>;
ip: Maybe<string>;
};