Remove default in state reducer

This allows us to ensure that we explicitly handle every action type

packages/instant/src/redux/reducer.ts

@@ -187,8 +187,6 @@ export const reducer = (state: State = INITIAL_STATE, action: Action): State =>
                 buyOrderState: { processState: OrderProcessState.NONE },
                 selectedAssetAmount: undefined,
             };
-        default:
-            return state;
     }
 };
 

packages/instant/tslint.json

@@ -3,6 +3,7 @@
     "rules": {
         "custom-no-magic-numbers": false,
         "semicolon": [true, "always", "ignore-bound-class-methods"],
-        "max-classes-per-file": false
+        "max-classes-per-file": false,
+        "switch-default": false
     }
 }