market/api/redeploy.tsx

import { NowRequest, NowResponse } from '@now/node'
import axios, { AxiosResponse } from 'axios'
import siteConfig from '../content/site.json'

async function redeploy(
  req: NowRequest
): Promise<AxiosResponse | undefined | string> {
  // Cancel if we are not on live
  if (req.headers.host !== siteConfig.site.siteUrl) return ''
  console.log('not canceled', req)
  try {
    // Trigger new `master` deployment with Deploy Hook
    const newDeployment = await axios.post(
      'https://api.zeit.co/v1/integrations/deploy/Qmd5YCS9PCCCqn4mjgVR3vGkYWNmEB5UnAzhnjZiGbMCKa/Q6viwRoT4V'
    )
    return newDeployment
  } catch (error) {
    console.error(error.message)
  }
}

export default async (req: NowRequest, res: NowResponse) => {
  switch (req.method) {
    case 'POST':
      res.status(200).json(await redeploy(req))
      break
    default:
      res.setHeader('Allow', ['POST'])
      res.status(405).end(`Method ${req.method} Not Allowed`)
  }
}