use Rollup

package.json

@@ -4,8 +4,8 @@
   "version": "0.0.1",
   "scripts": {
     "dev": "sapper dev",
-    "build": "sapper build",
-    "export": "sapper export",
+    "build": "sapper build --legacy",
+    "export": "sapper export --legacy",
     "start": "node build",
     "cy:run": "cypress run",
     "cy:open": "cypress open",
@@ -14,13 +14,24 @@
   "dependencies": {
     "compression": "^1.7.1",
     "polka": "^0.4.0",
-    "sapper": "^0.18.6",
+    "sapper": "^0.19.0",
     "sirv": "^0.2.0"
   },
   "devDependencies": {
+    "@babel/core": "^7.0.0",
+    "@babel/plugin-syntax-dynamic-import": "^7.0.0",
+    "@babel/plugin-transform-runtime": "^7.0.0",
+    "@babel/preset-env": "^7.0.0",
+    "@babel/runtime": "^7.0.0",
+    "chokidar": "^2.0.4",
     "npm-run-all": "^4.1.2",
-    "svelte": "^2.0.0",
-    "svelte-loader": "^2.9.0",
-    "webpack": "^4.7.0"
+    "rollup": "^0.65.0",
+    "rollup-plugin-babel": "^4.0.2",
+    "rollup-plugin-commonjs": "^9.1.6",
+    "rollup-plugin-node-resolve": "^3.3.0",
+    "rollup-plugin-replace": "^2.0.0",
+    "rollup-plugin-svelte": "^4.2.1",
+    "rollup-plugin-terser": "^1.0.1",
+    "svelte": "^2.0.0"
   }
 }