import { setUnrefTimeout } from "../timers.ts";import { notImplemented } from "../_utils.ts";
let utcCache: string | undefined;
export function utcDate() { if (!utcCache) cache(); return utcCache;}
function cache() { const d = new Date(); utcCache = d.toUTCString(); setUnrefTimeout(resetCache, 1000 - d.getMilliseconds());}
function resetCache() { utcCache = undefined;}
export function emitStatistics( _statistics: { startTime: [number, number] } | null,) { notImplemented("internal/http.emitStatistics");}
export const kOutHeaders = Symbol("kOutHeaders");export const kNeedDrain = Symbol("kNeedDrain");
export default { utcDate, emitStatistics, kOutHeaders, kNeedDrain,};