Function viewportToAbsolute

lib/selection-manager.test.ts:39–43

* Helper to convert viewport row to absolute row

(term: Terminal, viewportRow: number)

 * Helper to convert viewport row to absolute row
 */
function viewportToAbsolute(term: Terminal, viewportRow: number): number {
  const scrollbackLength = term.wasmTerm?.getScrollbackLength() ?? 0;
  const viewportY = term.getViewportY();
  return scrollbackLength + viewportRow - Math.floor(viewportY);
}

describe('SelectionManager', () => {
  let container: HTMLElement | null = null;