Repository: hashicorp/vault
File: ui/app/components/namespace-picker.js (JavaScript)

Code before:
      this.hasListPermissions = true;
    } catch (e) {
      // If error out on findRecord call it's because you don't have permissions
      // and therefore don't have permission to manage namespaces
      this.hasListPermissions = false;
    }
  }

  @action
  async loadOptions() {
    // TODO: namespace service's findNamespacesForUser will never throw an error.
    //  Check with design to determine if we should continue to ignore or handle an error situation here.
    await this.namespace?.findNamespacesForUser.perform();

    this.options = this.#getOptions(this.namespace);
    this.selected = this.#getSelected(this.options, this.namespace);

    await this.fetchListCapability();
  }

  @action
  async onChange(selected) {
    this.selected = selected;
    this.router.transitionTo('vault.cluster.dashboard', { queryParams: { namespace: selected.path } });
  }
}


Review comment (suggestion):
I believe `this.options` and `this.namespaceCount` could benefit from dynamically updating by being getters instead. That way we don't have to manage another tracked state 🤔 
```js
get namespaceOptions() {
   if (this.searchInput.trim() === '') {
     // If the search input is empty, reset to all namespaces
     return this.allNamespaces;
   } else {
      // Filter namespaces based on the search input
     return this.allNamespaces.filter((option) =>
        option.label.toLowerCase().includes(this.searchInput.toLowerCase()));
   }
}

get namespaceCount() {
   return this.namespaceOptions.length
}
```

Code after:
    if (this.searchInput.trim() === '') {
      // If the search input is empty, reset to all namespaces
      return this.allNamespaces;
    } else {
      // Filter namespaces based on the search input
      return this.allNamespaces.filter((ns) =>
        ns.label.toLowerCase().includes(this.searchInput.toLowerCase())
      );
    }
  }

  @action
  onSearchInput(event) {
    this.searchInput = event.target.value;
  }

  @action
  async fetchListCapability() {
    // TODO: Revist. This logic was carried over from previous component implmenetation.
    //  When the user doesn't have this capability, shouldn't we just hide the "Manage" button,
    //  instead of hiding both the "Manage" and "Refresh List" buttons?
    try {
      await this.store.findRecord('capabilities', 'sys/namespaces/');
      this.hasListPermissions = true;
    } catch (e) {
      // If error out on findRecord call it's because you don't have permissions
      // and therefore don't have permission to manage namespaces
      this.hasListPermissions = false;
    }
  }

  @action
  async loadOptions() {
    // TODO: namespace service's findNamespacesForUser will never throw an error.
    //  Check with design to determine if we should continue to ignore or handle an error situation here.
    await this.namespace?.findNamespacesForUser.perform();

    this.allNamespaces = this.#getOptions(this.namespace);
    this.selected = this.#getSelected(this.allNamespaces, this.namespace);

    await this.fetchListCapability();
  }

  @action
  async refreshList() {
    this.searchInput = '';
    await this.loadOptions();
  }

  @action
  async onChange(selected) {