How do I make a typescript array to cycle through CSS classes?

To cycle through CSS classes using TypeScript, you can create an array of class names and then use JavaScript logic to iterate through them. Below is a simple example using TypeScript with Angular, but you can adapt the concept to any TypeScript project.

Let's say you have an array of CSS class names:

```typescript
// app.component.ts
import { Component } from '@angular/core';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent {
  cssClasses: string[] = ['class1', 'class2', 'class3'];
  currentClassIndex: number = 0;

  cycleClass(): void {
    // Increment the index and wrap around if it exceeds the array length
    this.currentClassIndex = (this.currentClassIndex + 1) % this.cssClasses.length;
  }
}
```

Now, in your component's template (app.component.html), you can use Angular's `[ngClass]` directive to dynamically apply the CSS class:

```html
<!-- app.component.html -->
<div [ngClass]="cssClasses[currentClassIndex]">
  <!-- Your content goes here -->
  This div will cycle through different CSS classes.
</div>

<button (click)="cycleClass()">Cycle Class</button>
```

In this example, clicking the "Cycle Class" button will trigger the `cycleClass` method, which increments the index and applies the next CSS class from the array. If the index exceeds the array length, it wraps around to the first class.

This is just a basic example, and you can adapt it to your specific use case or framework. If you are not using Angular, you can still follow a similar approach with vanilla JavaScript or another framework like React or Vue.js.