core: add replacer for dump

packages/hydrooj/package.json

@@ -1,6 +1,6 @@
 {
     "name": "hydrooj",
-    "version": "2.32.9",
+    "version": "2.32.10",
     "bin": "bin/hydrooj.js",
     "main": "src/loader",
     "module": "src/loader",

packages/hydrooj/src/service/monitor.ts

@@ -46,6 +46,11 @@ export async function feedback(): Promise<[string, StatusUpdate]> {
         memory: inf.memory,
         osinfo: inf.osinfo,
         cpu: inf.cpu,
+    }, {
+        replacer: (key, value) => {
+            if (typeof value === 'function') return '';
+            return value;
+        },
     }));
     superagent.post(`${system.get('server.center')}/report`)
         .send({ installId, payload })