Use the init artifact as the dev entry point and restore state exports to the full UMD build

src/index.js

 import init from './init';
+import * as state from './state';
 
 const exports = {
-  viewer: init,
+  ...init,
+  ...state,
 };
 
 export default exports;

src/init.js

@@ -3,7 +3,7 @@ import MiradorViewer from './lib/MiradorViewer';
 /**
  * Default Mirador instantiation
  */
-export default function (config, pluginsOrStruct) {
+function viewer(config, pluginsOrStruct) {
   let struct;
 
   if (Array.isArray(pluginsOrStruct)) {
@@ -14,3 +14,9 @@ export default function (config, pluginsOrStruct) {
 
   return new MiradorViewer(config, struct);
 }
+
+const exports = {
+  viewer,
+};
+
+export default exports;

webpack.config.js

@@ -61,7 +61,7 @@ module.exports = (env, options) => {
   const config = baseConfig(options.mode);
 
   if (isProduction) {
-    const prodConfig = {
+    return {
       ...config,
       devtool: 'source-map',
       mode: 'production',
@@ -72,19 +72,6 @@ module.exports = (env, options) => {
         }),
       ],
     };
-
-    return [
-      prodConfig,
-      {
-        ...prodConfig,
-        entry: ['./src/polyfills.js', './src/state/index.js'],
-        output: {
-          ...prodConfig.output,
-          filename: 'mirador-state.min.js',
-          library: 'MiradorState',
-        },
-      },
-    ];
   }
 
   return {
@@ -95,7 +82,7 @@ module.exports = (env, options) => {
       port: 4444,
     },
     devtool: 'eval-source-map',
-    entry: ['react-hot-loader/patch', ...config.entry],
+    entry: ['react-hot-loader/patch', './src/polyfills.js', './src/init.js'],
     mode: 'development',
   };
 };