Function renderWithFallback

renderWithFallback(
    container: HTMLElement,
    renderFn: () => void | Promise<void>,
    fallbackMessage?: string,
    options?: RenderWithFallbackOptions,
): Promise<void>
Wrap a synchronous or asynchronous render function with an error boundary.
- Shows a loading skeleton while an async render is in progress.
- On success the container is left with whatever the render function produced.
- On failure the container shows an error card with an optional retry button.
- Each retry re-runs the full renderFn.
Parameters
- container: HTMLElement
  Target DOM element that will receive the rendered output.
- renderFn: () => void | Promise<void>
  Function (sync or async) that populates container.
- fallbackMessage: string = 'Data temporarily unavailable'
  Human-readable message shown in the error card.
- options: RenderWithFallbackOptions = {}
  Optional localised labels for the loading/error states.
Returns Promise<void>
- Defined in src/browser/shared/error-boundary.ts:47