fix(overmind): prevent hot reloading from messing up the app

Author: christianalfoni

packages/node_modules/overmind/src/index.ts

@@ -227,6 +227,8 @@ export type ActionCallback<App> = (action: TActionCreator<App>) => any
   CLASS TYPES
 */
 
+const hotReloadingCache = {}
+
 export default class App<
   Config extends Configuration,
   EvalConfig extends TConfig<Config>
@@ -245,6 +247,13 @@ export default class App<
   }
   state: EvalConfig['state']
   constructor(configuration: Config, options: Options = {}) {
+    const name = options.name || 'MyApp'
+
+    if (hotReloadingCache[name]) {
+      return hotReloadingCache[name]
+    } else {
+      hotReloadingCache[name] = this
+    }
     /*
       Mutate module functions into module objects
     */

packages/node_modules/overmind/src/internalTypes.ts

@@ -16,6 +16,7 @@ export type SubType<Base, Condition> = Pick<
 >
 
 export type Options = {
+  name?: string
   devtools?: string
 }