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export const ct = (res, mime, code, head) =>
res.writeHead(code||200, Object.apply({"Content-Type": mime||"application/json"}, head));
export const sj = (res, data, {code, head}={}) => { ct(res, null, code, head); res.end(JSON.stringify(data)); }
export const res204 = (res) => { res.statusCode = 204; res.end(); }
export const err400 = (res, msg) => { ct(res, "text/plain", 400); res.end(""+(msg||"400 Bad Request")); }
export const err401 = (res, msg) => { ct(res, "text/plain", 401); res.end(""+(msg||"401 Unauthorized")); }
export const err403 = (res, msg) => { ct(res, "text/plain", 403); res.end(""+(msg||"403 Forbidden")); }
export const err404 = (res, msg) => { ct(res, "text/plain", 404); res.end(""+(msg||"404 Not Found")); }
export const err500 = (res, msg) => { ct(res, "text/plain", 500); res.end(""+(msg||"500 Internal Server Error"));
console.log(Date.now+" [ERROR] 500"); }
export const cors = fn => (req, res, ...rest) => {
res.setHeader("Access-Control-Allow-Origin", "*");
res.setHeader("Access-Control-Allow-Methods", "GET, POST");
fn(req, res, ...rest); };
export const parseCookies = req =>
req.headers.cookie?.split(";")
.map(c => c.split("=").map(s => decodeURIComponent(s.trim())))
.reduce((a,c) => (a[c[0]]=c[1],a), {});
export const clamp = (x,l,h) => Math.max(l,Math.min(x,h));
export function deepFreeze(obj) {
for (const name of Reflect.ownKeys(obj)) {
const value = obj[name];
if ((value && typeof value === "object") ||
typeof value === "function") deepFreeze(value);
} return Object.freeze(obj);
}
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