promise 化 jsonwebtoken

const jwt = require('jsonwebtoken')



exports._jwt = jwt



exports.sign = (payload, key, opts) => {

  opts = opts || {}

  return new Promise((resolve, reject) => {

    jwt.sign(payload, key, opts, (err, token) => {

      if (err || !token) return reject(err)

      resolve(token)

    })

  })

}



exports.verify = (token, key, opts) => {

  opts = opts || {}

  return new Promise((resolve, reject) => {

    jwt.verify(token, key, opts, (err, verified) => {

      if (err) return reject(err)

      resolve(verified)

    })

  })

}