Function assertFp

internal/diff.ts:73–84

(value: unknown)

 * ```
 */
export function assertFp(value: unknown): asserts value is FarthestPoint {
  if (
    value == null ||
    typeof value !== "object" ||
    typeof (value as FarthestPoint)?.y !== "number" ||
    typeof (value as FarthestPoint)?.id !== "number"
  ) {
    throw new Error(
      `Unexpected value, expected 'FarthestPoint': received ${typeof value}`,
    );
  }
}

/**
 * Creates an array of backtraced differences.