1 files changed, 10 insertions, 1 deletions
diff --git a/packages/demobank-ui/src/settings.ts b/packages/demobank-ui/src/settings.ts
index b7d285519..2c6ac1c67 100644
--- a/packages/demobank-ui/src/settings.ts
+++ b/packages/demobank-ui/src/settings.ts
@@ -64,13 +64,22 @@ const codecForBankUISettings = (): Codec<BankUiSettings> =>
     .property("topNavSites", codecOptional(codecForMap(codecForString())))
     .build("BankUiSettings");
 
+function removeUndefineField(obj: any): object {
+  return Object.keys(obj).reduce((prev, cur) => {
+    if (typeof prev[cur] === "undefined") {
+      delete prev[cur]
+    }
+    return prev
+  }, obj)
+}
+
 export function fetchSettings(listener: (s: BankUiSettings) => void): void {
   fetch("./settings.json")
     .then(resp => resp.json())
     .then(json => codecForBankUISettings().decode(json))
     .then(result => listener({
       ...defaultSettings,
-      ...result,
+      ...removeUndefineField(result),
     }))
     .catch(e => {
       console.log("failed to fetch settings", e)