formatCacheControl

function · experimental

function formatCacheControl(cc: CacheControl): string

Serializes a Cache-Control object to a header value string. Output is lowercase and comma-separated. Empty object produces an empty string.

An empty array for noCache or private is serialized as the bare directive (e.g. no-cache), which parseCacheControl parses back as true rather than [].

cc: CacheControl

The Cache-Control object (request or response).

Returns

The header value string, or empty string if no directives.

import { formatCacheControl } from "@ende/http/unstable-cache-control";
import { assertEquals } from "@ende/assert";

const value = formatCacheControl({ maxAge: 300, mustRevalidate: true });
assertEquals(value, "max-age=300, must-revalidate");