chore(scripts): update ts watch

Author: dhruvdutt

package-lock.json

@@ -43,7 +43,7 @@
     "travis:integration": "npm run build && npm run test && npm run reportCoverage",
     "travis:lint": "lerna bootstrap && npm run build && npm run lint && npm run tslint && npm run bundlesize",
     "tslint": "tslint -c tslint.json \"packages/**/*.ts\"",
-    "watch": "tsc -w"
+    "watch": "npm run build && tsc -w"
   },
   "lint-staged": {
     "{packages,bin}/**/!(__testfixtures__)/**.js": [

package.json

@@ -17,6 +17,7 @@
     "typescript": "^2.9.2"
   },
   "scripts": {
-    "build": "tsc"
+    "build": "tsc",
+    "watch": "npm run build && tsc -w"
   }
 }