Suggest using solid dev build in webpack for hmr to work

Author: non25

README.md

@@ -72,7 +72,10 @@ In your webpack config, be sure to have the following options:
 devServer: {
   liveReload: false,
   hot: true,
-}
+},
+resolve: {
+  conditionNames: prod ? ['browser', 'import'] : ['development', 'browser', 'import'],
+},
 ```
 
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