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import type { Response, NextFunction } from 'express'

import type { ExtendedRequest } from '@/types'

import { defaultCacheControl } from './cache-control'

export default function fastHead(req: ExtendedRequest, res: Response, next: NextFunction) {

if (!req.context) throw new Error('request is not contextualized')

const { context } = req

const { page } = context

if (page) {

// Cache by URL because request headers do not change this empty HEAD response.

defaultCacheControl(res)

res.status(200).send('')

return

}

next()

}