buildutils and test tsconfig inherit from base config again

buildutils/tsconfig.json

@@ -1,23 +1,9 @@
 {
+  "extends": "../tsconfigbase",
   "compilerOptions": {
     "outDir": "lib",
     "rootDir": "src",
-    "allowSyntheticDefaultImports": true,
-    "composite": true,
-    "declaration": true,
-    "esModuleInterop": true,
-    "incremental": true,
-    "jsx": "react",
-    "lib": ["dom", "es2015"],
     "module": "commonjs",
-    "moduleResolution": "node",
-    "noEmitOnError": true,
-    "noImplicitAny": true,
-    "noUnusedLocals": true,
-    "preserveWatchOutput": true,
-    "resolveJsonModule": true,
-    "target": "es2015",
-    "types": []
   },
   "include": ["src/*"]
 }

testutils/tsconfig.json

@@ -1,22 +1,9 @@
 {
+  "extends": "../tsconfigbase",
   "compilerOptions": {
     "outDir": "lib",
     "rootDir": "src",
-    "allowSyntheticDefaultImports": true,
-    "composite": true,
-    "declaration": true,
-    "esModuleInterop": true,
-    "incremental": true,
-    "jsx": "react",
-    "lib": ["dom", "es2015"],
     "module": "commonjs",
-    "moduleResolution": "node",
-    "noEmitOnError": true,
-    "noImplicitAny": true,
-    "noUnusedLocals": true,
-    "preserveWatchOutput": true,
-    "resolveJsonModule": true,
-    "target": "es2015",
     "types": ["node"]
   },
   "include": ["src/*"],