chore(toasts): refactor and test flash to toast logic

client/utils/flash-to-toast.js

@@ -0,0 +1,16 @@
+import { makeToast } from '../../common/app/toasts/redux/actions';
+
+export default function flashToToast(flash) {
+  return Object.keys(flash)
+    .map(key => {
+      const messages = flash[key];
+      return messages.map(message => ({
+        message: message.msg,
+        type: key,
+        timeout: 5000
+      }));
+    })
+    .reduce((toasts, messages) => toasts.concat(messages), [])
+    .map(makeToast)
+    .map(({ payload }) => payload);
+}