src/media/load-options.ts

export type OutboundMediaLoadParams = {
  maxBytes?: number;
  mediaLocalRoots?: readonly string[];
};

export type OutboundMediaLoadOptions = {
  maxBytes?: number;
  localRoots?: readonly string[];
};

export function resolveOutboundMediaLocalRoots(
  mediaLocalRoots?: readonly string[],
): readonly string[] | undefined {
  return mediaLocalRoots && mediaLocalRoots.length > 0 ? mediaLocalRoots : undefined;
}

export function buildOutboundMediaLoadOptions(
  params: OutboundMediaLoadParams = {},
): OutboundMediaLoadOptions {
  const localRoots = resolveOutboundMediaLocalRoots(params.mediaLocalRoots);
  return {
    ...(params.maxBytes !== undefined ? { maxBytes: params.maxBytes } : {}),
    ...(localRoots ? { localRoots } : {}),
  };
}