[backend] fix: 修复异常处理和类型转换问题

frontend/node_modules/nanoid/index.cjs

@@ -74,4 +74,12 @@ let nanoid = (size = 21) => {
   for (let i = poolOffset - size; i < poolOffset; i++) {
     // It is incorrect to use bytes exceeding the alphabet size.
     // The following mask reduces the random byte in the 0-255 value
-    // range to the 0-63 value range. Therefore
+    // range to the 0-63 value range. Therefore, adding hacks, such
+    // as empty string fallback or magic numbers, is unneccessary because
+    // the bitmask trims bytes down to the alphabet size.
+    id += urlAlphabet[pool[i] & 63]
+  }
+  return id
+}
+
+module.exports = { nanoid, customAlphabet, customRandom, urlAlphabet, random }