add sourcemaps for the typescript

bin/analyse.js

@@ -1,3 +1,5 @@
+require('source-map-support').install();
+
 var Demo = require('../index');
 var fs = require('fs');
 var argv = require('minimist')(process.argv.slice(2), {boolean: true});

package.json

@@ -14,6 +14,7 @@
   },
   "devDependencies": {
     "@types/node": "^6.0.52",
+    "babel-plugin-transform-do-expressions": "^6.8.0",
     "babel-preset-es2015-node6": "^0.4.0",
     "typescript": "^2.1.4"
   }

tsconfig.json

@@ -10,6 +10,7 @@
 		"outDir": "build",
 		"rootDir": "src",
 		"declaration": true,
-		"strictNullChecks": true
+		"strictNullChecks": true,
+		"sourceMap": true
 	}
 }