change pkg.main to appease webpack

.eslintrc.json

@@ -34,7 +34,7 @@
 		"plugin:import/warnings"
 	],
 	"parserOptions": {
-		"ecmaVersion": 6,
+		"ecmaVersion": 9,
 		"sourceType": "module"
 	},
 	"settings": {

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "svelte",
-  "version": "3.0.0-alpha23",
+  "version": "3.0.0-alpha26",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {

package.json

@@ -1,9 +1,9 @@
 {
   "name": "svelte",
-  "version": "3.0.0-alpha25",
+  "version": "3.0.0-alpha26",
   "description": "The magical disappearing UI framework",
   "module": "index.mjs",
-  "main": "index.js",
+  "main": "index",
   "bin": {
     "svelte": "svelte"
   },