diff --git a/configs/tsconfig.json b/configs/tsconfig.json
index 827dcde..d67def1 100644
--- a/configs/tsconfig.json
+++ b/configs/tsconfig.json
@@ -37,6 +37,7 @@
 		"allowImportingTsExtensions": true, // allow importing ts file
 		"allowSyntheticDefaultImports": true, // impot X from "x" instead of import * as X from "x"
 		"forceConsistentCasingInFileNames": true, // no different casing importing the same file
+		"useDefineForClassFields": true, // use the TC39 class fields instead of the typescript implementation
 		"verbatimModuleSyntax": true, // if i only import a type from a file don't drop the import after compilation
 		"noEmit": true, // don't output code
 		"sourceMap": true, // enable sourcemap
@@ -47,9 +48,10 @@
 		"incremental": true, // cache some informations about the types to speed up the next typechecks
 		"tsBuildInfoFile": ".tsbuildinfo", // set the name of the cache file
 
-		"baseUrl": "${configDir}" // path alias root
+		"baseUrl": "${configDir}", // path alias root
+		"rootDirs": ["${configDir}", "${configDir}/.codegen"] // virtual root for codegen files
 	},
 
 	"exclude": ["${configDir}/**/node_modules", "${configDir}/**/dist", "${configDir}/**/.*"],
-	"include": ["${configDir}/src/**/*", "${configDir}/*.config.*", "${configDir}/index.ts", "${configDir}/sse.g.ts"]
+	"include": ["${configDir}/src/**/*", "${configDir}/*.config.*", "${configDir}/index.ts", "${configDir}/.codegen/**/*"]
 }