/**
 * Limits a sector corner radius to the largest value that fits its angular sweep.
 * This keeps a tiny sector attached to its arc instead of relying on Recharts'
 * `forceCornerRadius` fallback, which renders a detached circle.
 */
export default function getFittedCornerRadius(cornerRadius: number | string | undefined, outerRadius: number, startAngle: number, endAngle: number, cornerIsExternal?: boolean): number | undefined;