Function hasUncacheableCacheControl

packages/common/http/src/transfer_cache.ts:329–341

(headers: HttpHeaders)

const UNCACHEABLE_CACHE_CONTROL_DIRECTIVES = new Set(['no-store', 'private', 'no-cache']);

function hasUncacheableCacheControl(headers: HttpHeaders): boolean {
  const cacheControl = headers.get('cache-control');

  if (!cacheControl) {
    return false;
  }

  return cacheControl.split(',').some((directive) => {
    const directiveName = directive.split('=', 1)[0].trim().toLowerCase();

    return UNCACHEABLE_CACHE_CONTROL_DIRECTIVES.has(directiveName);
  });
}

function hasSetCookieHeader(headers: HttpHeaders): boolean {
  return headers.has('set-cookie');