req.query will produce object instead of array when it contains more than 20 values in v4.22.X #7147
Description
Environment information
Version: 4.22.1 / 4.22.X
Platform: MacOS / Linux
Node.js version: 24.14.1
Any other relevant information:
What steps will reproduce the bug?
Consider following API query:
GET /reports/download?tenancyIds=35&tenancyIds=28&tenancyIds=149&tenancyIds=157&tenancyIds=158&tenancyIds=159&tenancyIds=161&tenancyIds=160&tenancyIds=162&tenancyIds=163&tenancyIds=164&tenancyIds=165&tenancyIds=166&tenancyIds=167&tenancyIds=7&tenancyIds=196&tenancyIds=195&tenancyIds=198&tenancyIds=70&tenancyIds=6
Prior to version 4.22.X, when calling with query regardless of numbers, req.query.tenancyIds will always produce as array:
[
'35', '28', '149', '157',
'158', '159', '161', '160',
'162', '163', '164', '165',
'166', '167', '7', '196',
'195', '198', '70', '6'
]
However, in version 4.22.X, when calling with query more than 20, req.query.tenancyIds will produce as object instead (but produce as array if it's 20 or less)
// 20 or less
[
'35', '28', '149', '157',
'158', '159', '161', '160',
'162', '163', '164', '165',
'166', '167', '7', '196',
'195', '198', '70', '6'
]
// more than 20
{
'0': '35',
'1': '28',
'2': '149',
'3': '157',
'4': '158',
'5': '159',
'6': '161',
'7': '160',
'8': '162',
'9': '163',
'10': '164',
'11': '165',
'12': '166',
'13': '167',
'14': '7',
'15': '196',
'16': '195',
'17': '198',
'18': '70',
'19': '6',
'20': '75'
}