Function typewriter

typewriter(
    element: HTMLElement,
    text: string,
    options?: TypewriterOptions,
): CancellablePromise
Displays text character by character with a typewriter effect.

The text is revealed one character at a time, creating a typing animation. The returned promise can be cancelled to immediately show the full text.
Parameters
- element: HTMLElement
  The DOM element to display text in
- text: string
  The text to display
- Optionaloptions: TypewriterOptions = {}
  Typewriter options
  
  Options for configuring the typewriter text effect.
  
  TypewriterOptions
  - OptionalonComplete?: () => void
    Callback function invoked when the animation completes (either naturally or when cancelled).
  - Optionalspeed?: number
    Characters per second. Higher values mean faster typing.
Returns CancellablePromise
A cancellable promise that resolves when animation completes. Call .cancel() to immediately show the full text.
Example
```
const element = document.getElementById("dialogue");
const animation = typewriter(element, "Hello, world!", { speed: 75 });

// Optionally cancel to show full text immediately
animation.cancel();
```
- Defined in src/renderer/effects.ts:41