1 files changed, 20 insertions, 12 deletions

diff --git a/app/utils.js b/app/utils.js
index 2ff2b9c..03e2233 100644
--- a/app/utils.js
+++ b/app/utils.js
@@ -1,23 +1,31 @@
-"use strict";
-
-const ct = module.exports.ct = (res, mime, code, head) =>
+export const ct = (res, mime, code, head) =>
   res.writeHead(code||200, Object.apply({"Content-Type": mime||"application/json"}, head));
-module.exports.sj = (res, data, {code, head}={}) => { ct(res, null, code, head); res.end(JSON.stringify(data)); }
+export const sj = (res, data, {code, head}={}) => { ct(res, null, code, head); res.end(JSON.stringify(data)); }
 
-module.exports.res204 = (res) => { res.statusCode = 204; res.end(); }
-module.exports.err400 = (res, msg) => { ct(res, "text/plain", 400); res.end(""+(msg||"400 Bad Request")); }
-module.exports.err401 = (res, msg) => { ct(res, "text/plain", 401); res.end(""+(msg||"401 Unauthorized")); }
-module.exports.err403 = (res, msg) => { ct(res, "text/plain", 403); res.end(""+(msg||"403 Forbidden")); }
-module.exports.err404 = (res, msg) => { ct(res, "text/plain", 404); res.end(""+(msg||"404 Not Found")); }
-module.exports.err500 = (res, msg) => { ct(res, "text/plain", 500); res.end(""+(msg||"500 Internal Server Error"));
+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"); }
 
-module.exports.cors = fn => (req, res, ...rest) => {
+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); };
 
-module.exports.parseCookies = req =>
+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);
+}