// MS Excel MIME types — covers all native Microsoft spreadsheet formats.
// Stored in their canonical form (RFC 4288 mimetypes are case-sensitive;
// the media backend always sends them in this exact casing).
var EXCEL_MIME_TYPES = new Set(['application/vnd.ms-excel', 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet', 'application/vnd.ms-excel.sheet.binary.macroEnabled.12', 'application/vnd.ms-excel.sheet.macroEnabled.12']);
export var isExcelFile = function isExcelFile(mimeType) {
  return EXCEL_MIME_TYPES.has(mimeType);
};