```typescript
import { Component, OnInit } from '@angular/core';
import { ThemeService } from './theme.service';

@Component({
  selector: 'app-your-component',
  templateUrl: './your-component.component.html',
  styleUrls: ['./your-component.component.css'],
  standalone: true,
  providers: [
    ThemeService,
    ...provideThemeConfig({ useLocalStorage: true, nameLocalStorageKey: 'data-theme', elementTheme: 'myElement' })
  ]
})
export class YourComponent implements OnInit {
  constructor(private themeService: ThemeService) {
    // Set the element on which the data-theme attribute will be applied
    this.themeService.setThemeElement(document.getElementById('my-element'));
  }

  ngOnInit(): void {
    //
  }

  /**
   * Toggles the current theme between light and dark.
   */
  toggleTheme(): void {
    this.themeService.toggle();
  }
}
```

## Explanation

1. ThemeService

- The ThemeService class handles theme management, including applying themes, toggling themes, and optionally storing the theme in localStorage.
- The setThemeElement method allows setting the DOM element where the data-theme attribute will be applied. By default, it applies to the body.
- The theme is applied reactively using Angular's effect to listen for changes in the theme signal.

2. tokens.ts

- An InjectionToken named USE_LOCAL_STORAGE is created to configure whether to use localStorage for theme persistence.

3. YourModule:

- The ThemeService is provided at the module level along with the USE_LOCAL_STORAGE token configuration.

4. YourComponent:

- Demonstrates how to use ThemeService in a component, including setting the theme element and toggling the theme.
