fix tests

tsc can handle trailing commas but ts-node cannot

Author: jessitron

tsconfig.json

@@ -48,10 +48,10 @@
     // "rootDirs": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */
     // "typeRoots": [
     //   "types/boxen"
-    // ], /* List of folders to include type definitions from. */
+    // ], 
     "types": [
       "@types/node",
-      "@types/mocha",
+      "@types/mocha"
     ], /* Type declaration files to be included in compilation. */
     // "allowSyntheticDefaultImports": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */
     "esModuleInterop": true /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */