diff --git a/.babelrc b/.babelrc
index 8aa2d4712..62cb094bb 100644
--- a/.babelrc
+++ b/.babelrc
@@ -31,5 +31,6 @@
 	],
 	"compact": true,
 	"comments": false,
-	"retainLines": true
+	"retainLines": true,
+	"sourceMaps": true
 }
diff --git a/.gitignore b/.gitignore
index 792d63b52..961f55036 100644
--- a/.gitignore
+++ b/.gitignore
@@ -13,7 +13,6 @@ Thumbs.db
 npm-debug.log
 package-lock.json
 /vendor/
-.vscode
 
 /js/battle.js
 /js/battledata.js
@@ -43,6 +42,7 @@ package-lock.json
 /js/panel-teamdropdown.js
 /js/panel-battle.js
 /js/replay-embed.js
+/js/*.js.map
 
 /replays/caches/
 /replays/replay-config.inc.php
diff --git a/.vscode/launch.json b/.vscode/launch.json
new file mode 100644
index 000000000..7b5e31a5d
--- /dev/null
+++ b/.vscode/launch.json
@@ -0,0 +1,23 @@
+{
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "Chrome: Test Client Beta (Preact)",
+            "port": 9222,
+            "request": "launch",
+            "url": "${config:showdown.clientUrl}/testclient-beta.html${config:showdown.server}",
+            "type": "pwa-chrome",
+            "webRoot": "${workspaceFolder}",
+            "preLaunchTask": "npm: build"
+        },
+        {
+            "name": "Chrome: Test Client",
+            "port": 9222,
+            "request": "launch",
+            "url": "${config:showdown.clientUrl}/testclient.html${config:showdown.server}",
+            "type": "pwa-chrome",
+            "webRoot": "${workspaceFolder}",
+            "preLaunchTask": "npm: build"
+        }
+    ]
+} 
\ No newline at end of file
diff --git a/.vscode/settings.json b/.vscode/settings.json
new file mode 100644
index 000000000..164db15dc
--- /dev/null
+++ b/.vscode/settings.json
@@ -0,0 +1,5 @@
+{
+  "editor.formatOnSave": false,
+  "showdown.server": "", // e.g., "?~~localhost:8000"
+  "showdown.clientUrl": "http://localhost:8080"
+}
diff --git a/build-tools/update b/build-tools/update
index 4f43bd80b..bb5bf905c 100755
--- a/build-tools/update
+++ b/build-tools/update
@@ -82,7 +82,7 @@ if (process.argv[2] === 'full') {
 	} catch (e) {}
 }
 
-child_process.execSync(`node build-tools/babel-cli/bin/babel.js src --out-dir js --extensions ".ts,.tsx" --incremental${ignoreGraphics}`);
+child_process.execSync(`node build-tools/babel-cli/bin/babel.js src --out-dir js --extensions ".ts,.tsx" --incremental${ignoreGraphics} --source-maps`);
 
 let textData = '';
 try {