feat(config/tsconfig): add common TypeScript configuration

Author: jrolfs

package.json

@@ -33,7 +33,8 @@
     "config.js",
     "prettier.js",
     "jest.js",
-    "lint-staged.js"
+    "lint-staged.js",
+    "tsconfig.json"
   ],
   "keywords": [],
   "author": "Jamie Rolfs <jamie.rolfs@hover.to>",

src/config/tsconfig.json

@@ -0,0 +1,25 @@
+{
+  "compilerOptions": {
+    "alwaysStrict": true,
+    "baseUrl": "./",
+    "declaration": true,
+    "esModuleInterop": true,
+    "importHelpers": true,
+    "jsx": "react",
+    "lib": ["dom", "esnext"],
+    "module": "esnext",
+    "moduleResolution": "node",
+    "noFallthroughCasesInSwitch": true,
+    "noImplicitAny": true,
+    "noImplicitReturns": true,
+    "noImplicitThis": true,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "sourceMap": true,
+    "strict": true,
+    "strictFunctionTypes": true,
+    "strictNullChecks": true,
+    "strictPropertyInitialization": true,
+    "target": "es5"
+  }
+}

tsconfig.json

@@ -0,0 +1,3 @@
+{
+  "extends": "./src/config/tsconfig"
+}