Function getAltScreenResizeRepaintMode

src/ink/altScreenResizePolicy.ts:14–26

(
  prevWidth: number,
  nextWidth: number,
  synchronizedOutputSupported: boolean,
)

 * not show a full blank frame between erase and paint.
 */
export function getAltScreenResizeRepaintMode(
  prevWidth: number,
  nextWidth: number,
  synchronizedOutputSupported: boolean,
): AltScreenRepaintMode {
  if (prevWidth === nextWidth) {
    return 'none'
  }

  return synchronizedOutputSupported
    ? 'erase-before-paint'
    : 'repaint-from-home'
}

/**
 * Alt-screen recovery (SIGCONT, sleep/wake, fullscreen editor return) uses the