install source-map-support

package.json

@@ -37,6 +37,7 @@
     "rimraf": "^2.6.2",
     "sander": "^0.6.0",
     "serialize-javascript": "^1.4.0",
+    "source-map-support": "^0.5.3",
     "tslib": "^1.8.1",
     "url-parse": "^1.2.0",
     "wait-port": "^0.2.2",
@@ -60,7 +61,6 @@
     "rollup-plugin-json": "^2.3.0",
     "rollup-plugin-string": "^2.0.2",
     "rollup-plugin-typescript": "^0.8.1",
-    "source-map-support": "^0.5.2",
     "style-loader": "^0.19.1",
     "svelte": "^1.49.1",
     "svelte-loader": "^2.3.2",