Adjusted tsconfig and fixed critical whitespace missing in comment /s

types/obj-str/obj-str-tests.ts

@@ -3,4 +3,4 @@ import objstr = require('obj-str');
 const isTrue = () => true;
 
 objstr({ foo: true, bar: false, baz: isTrue() });
-//=> 'foo baz'
+// => 'foo baz'

types/obj-str/tsconfig.json

@@ -1,22 +1,16 @@
 {
     "compilerOptions": {
         "module": "commonjs",
-        "lib": [
-            "es6"
-        ],
+        "lib": ["es6"],
         "noImplicitAny": true,
         "noImplicitThis": true,
         "strictNullChecks": true,
         "baseUrl": "../",
-        "typeRoots": [
-            "../"
-        ],
+        "typeRoots": ["../"],
+        "strictFunctionTypes": true,
         "types": [],
         "noEmit": true,
         "forceConsistentCasingInFileNames": true
     },
-    "files": [
-        "index.d.ts",
-        "obj-str-tests.ts"
-    ]
+    "files": ["index.d.ts", "obj-str-tests.ts"]
 }