Grabbed dndbeyond's source code

```
~/go/bin/sourcemapper -output ddb -jsurl https://media.dndbeyond.com/character-app/static/js/main.90aa78c5.js
```

ddb_main/helpers/localStorageUtils.ts

@@ -0,0 +1,33 @@
+export const tryGet = (key: string) => {
+  try {
+    return window.localStorage.getItem(key);
+  } catch (exception) {
+    // If 3rd party cookies are turned off even though window.localStorage
+    // is accessible or local storage is full this will error
+    // https://github.com/Modernizr/Modernizr/blob/master/feature-detects/storage/localstorage.js
+    return null;
+  }
+};
+
+export const trySet = (key: string, value: string) => {
+  try {
+    window.localStorage.setItem(key, value);
+
+    return true;
+  } catch (exception) {
+    // Safari can throw an exception when calling localStorage.setItem in a private browsing tab.
+    // https://developer.mozilla.org/en-US/docs/Web/API/Storage/setItem#Exceptions
+    return false;
+  }
+};
+
+export const tryRemove = (key: string) => {
+  try {
+    window.localStorage.removeItem(key);
+
+    return true;
+  } catch (exception) {
+    // Get and trySet can throw exceptions, so this probably can too...
+    return false;
+  }
+};