Add nyc support

webpack.config.js

@@ -20,6 +20,14 @@ module.exports = {
                 test: /\.ts$/,
                 loaders: ["awesome-typescript-loader"],
             },
+            {
+                // For coverage testing
+                test: /\.(ts)/,
+                include: path.resolve("src"),
+                loader: "istanbul-instrumenter-loader",
+                enforce: "post",
+                exclude: [/node_modules/],
+            }
         ],
     },