diff --git a/package-lock.json b/package-lock.json
index 71b906479467..6f8c25ef99ce 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -14,7 +14,8 @@
         "preact": "^10.5.15",
         "preact-render-to-string": "^5.1.19",
         "probe-image-size": "^7.2.3",
-        "sockjs": "^0.3.21"
+        "sockjs": "^0.3.21",
+        "source-map-support": "^0.5.21"
       },
       "bin": {
         "pokemon-showdown": "pokemon-showdown"
@@ -685,6 +686,11 @@
         "ieee754": "^1.1.13"
       }
     },
+    "node_modules/buffer-from": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/buffer-from/-/buffer-from-1.1.2.tgz",
+      "integrity": "sha512-E+XQCRwSbaaiChtv6k6Dwgc+bx+Bs6vuKJHHl5kox/BaKbhiXzqQOwK4cO22yElGp2OCmjwVhT3HmxgyPGnJfQ=="
+    },
     "node_modules/buffer-writer": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/buffer-writer/-/buffer-writer-2.0.0.tgz",
@@ -3140,6 +3146,23 @@
         "uuid": "dist/bin/uuid"
       }
     },
+    "node_modules/source-map": {
+      "version": "0.6.1",
+      "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
+      "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==",
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
+    "node_modules/source-map-support": {
+      "version": "0.5.21",
+      "resolved": "https://registry.npmjs.org/source-map-support/-/source-map-support-0.5.21.tgz",
+      "integrity": "sha512-uBHU3L3czsIyYXKX88fdrGovxdSCoTGDRZ6SYXtSRxLZUzHg5P/66Ht6uoUlHu9EZod+inXhKo3qQgwXUT/y1w==",
+      "dependencies": {
+        "buffer-from": "^1.0.0",
+        "source-map": "^0.6.0"
+      }
+    },
     "node_modules/split2": {
       "version": "4.1.0",
       "resolved": "https://registry.npmjs.org/split2/-/split2-4.1.0.tgz",
diff --git a/package.json b/package.json
index c4ab0c37a335..e60834c4ab6c 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,8 @@
     "preact": "^10.5.15",
     "preact-render-to-string": "^5.1.19",
     "probe-image-size": "^7.2.3",
-    "sockjs": "^0.3.21"
+    "sockjs": "^0.3.21",
+    "source-map-support": "^0.5.21"
   },
   "optionalDependencies": {
     "better-sqlite3": "^7.6.2",
diff --git a/server/index.ts b/server/index.ts
index ea4d88a95b60..49475d19dc74 100644
--- a/server/index.ts
+++ b/server/index.ts
@@ -55,6 +55,7 @@ if (isNaN(nodeVersion) || nodeVersion < 16) {
 }
 
 import {FS, Repl} from '../lib';
+import 'source-map-support/register';
 
 /*********************************************************
  * Set up most of our globals