Disable sourcemap emission to avoid missing source warnings (#1268)

Amp-Thread-ID: https://ampcode.com/threads/T-019cf38f-f178-708b-b734-0d959b97b235

Author: tmm

tsconfig.base.json

@@ -8,7 +8,7 @@
     ],
     "module": "commonjs",
     "declaration": true,
-    "sourceMap": true,
+    "sourceMap": false,
     "strict": true,
     "moduleResolution": "node",
     "esModuleInterop": true,