File size: 1,470 Bytes
1e92f2d |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 |
import { getRequestMeta, type NextIncomingMessage } from '../request-meta'
type PatchableResponse = {
setHeader(key: string, value: string | string[]): PatchableResponse
}
/**
* Ensure cookies set in middleware are merged and not overridden by API
* routes/getServerSideProps.
*
* @param req Incoming request
* @param res Outgoing response
*/
export function patchSetHeaderWithCookieSupport(
req: NextIncomingMessage,
res: PatchableResponse
) {
const setHeader = res.setHeader.bind(res)
res.setHeader = (
name: string,
value: string | string[]
): PatchableResponse => {
// When renders /_error after page is failed, it could attempt to set
// headers after headers.
if ('headersSent' in res && res.headersSent) {
return res
}
if (name.toLowerCase() === 'set-cookie') {
const middlewareValue = getRequestMeta(req, 'middlewareCookie')
if (
!middlewareValue ||
!Array.isArray(value) ||
!value.every((item, idx) => item === middlewareValue[idx])
) {
value = [
// TODO: (wyattjoh) find out why this is called multiple times resulting in duplicate cookies being added
...new Set([
...(middlewareValue || []),
...(typeof value === 'string'
? [value]
: Array.isArray(value)
? value
: []),
]),
]
}
}
return setHeader(name, value)
}
}
|