netlify-cli/functions-templates/typescript/set-cookies/{{name}}.ts

Netlify command line tool

import type { Context } from 'https://edge.netlify.com'

export default async (request: Request, context: Context) => {
  const url = new URL(request.url)

  switch (url.searchParams.get('action')) {
    case 'set':
      context.cookies.set({
        name: 'action',
        value: 'hello',
      })

      return new Response('Cookie value has been set. Reload this page without the "action" parameter to see it.')

    case 'clear':
      context.cookies.delete('action')

      return new Response(
        'Cookie value has been cleared. Reload this page without the "action" parameter to see the new state.',
      )
  }

  const value = context.cookies.get('action')
  const message = value
    ? `Cookie value is "${value}". You can clear it by using "?action=clear".`
    : 'Cookie has not been set. You can do so by adding "?action=set" to the URL.'

  return new Response(message)
}