Function buildContentDisposition

packages/server/src/routes/files.ts:309–319

(name: string, mediaType?: string)

}

function buildContentDisposition(name: string, mediaType?: string): string {
  // Media the browser can render (image/video/audio) is served `inline` so a
  // direct navigation plays/displays it; everything else stays an attachment.
  const kind = mediaType?.split('/')[0];
  const disposition =
    kind === 'image' || kind === 'video' || kind === 'audio' ? 'inline' : 'attachment';
  if (/^[\w. ()+[\]-]+$/.test(name)) {
    return `${disposition}; filename="${name}"`;
  }
  return disposition;
}

function readRangeHeader(value: string | string[] | undefined): string | undefined {
  return Array.isArray(value) ? value[0] : value;