Function prime

test/e2e/cancel-request/stream-cancel.test.ts:10–46

(url: string, noData?: boolean)

  })

  function prime(url: string, noData?: boolean) {
    return new Promise<void>((resolve, reject) => {
      url = new URL(url, next.url).href

      // There's a bug in node-fetch v2 where aborting the fetch will never abort
      // the connection, because the body is a transformed stream that doesn't
      // close the connection stream.
      // https://github.com/node-fetch/node-fetch/pull/670
      const req = get(url, async (res) => {
        while (true) {
          const value = res.read(1)
          if (value) break
          await sleep(5)
        }

        res.destroy()
        resolve()
      })
      req.on('error', reject)
      req.end()

      if (noData) {
        req.on('error', (e) => {
          // Swallow the "socket hang up" message that happens if you abort
          // before the a response connection is received.
          if ((e as any).code !== 'ECONNRESET') {
            throw e
          }
        })

        setTimeout(() => {
          req.abort()
          resolve()
        }, 100)
      }
    })
  }

  describe.each([
    ['middleware', '/middleware'],