Update tsconfig.json

Use standalone tsconfig.

tsconfig.json

@@ -1,7 +1,20 @@
 {
   "exclude": ["node_modules"],
-  "extends": "../../../tsconfig.json",
   "compilerOptions": {
-    "rootDir": "src"
+    "rootDir": "src",
+    "module": "ESNext",
+    "lib": ["DOM", "ESNext"],
+    "importHelpers": true,
+    "declaration": true,
+    "sourceMap": true,
+    "strict": true,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "noImplicitReturns": true,
+    "noFallthroughCasesInSwitch": true,
+    "moduleResolution": "node",
+    "jsx": "react",
+    "esModuleInterop": true,
+    "target": "ES2017"
   }
 }