fix sample

Author: jogibear9988

tsconfig.json

@@ -6,13 +6,14 @@
     "declaration": true, /* Generates corresponding '.d.ts' file. */
     "sourceMap": false, /* Generates corresponding '.map' file. */
     "outDir": "./dist", /* Redirect output structure to the directory. */
+    "rootDir": "./src",
     "noImplicitThis": true, /* Raise error on 'this' expressions with an implied 'any' type. */
     "alwaysStrict": true, /* Parse in strict mode and emit "use strict" for each source file. */
     "resolveJsonModule": true,
     "noUnusedLocals": true, /* Report errors on unused locals. */
     "noImplicitReturns": true, /* Report error when not all code paths in function return a value. */
     "noFallthroughCasesInSwitch": true, /* Report errors for fallthrough cases in switch statement. */
-    "moduleResolution": "node", /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */
+    "moduleResolution": "bundler", /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */
     "esModuleInterop": true, /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
     "experimentalDecorators": true, /* Enables experimental support for ES7 decorators. */
     "types": ["node"]