import neo4j, { AuthToken } from 'neo4j-driver'

/**
 * Method called whenever the driver needs to refresh the token.
 *
 * The refresh will happen if the driver is notified by the server
 * about a token expiration or if the `Date.now() > tokenData.expiry`
 *
 * Important, the driver will block all the connections creation until
 * this function resolves the new auth token.
 */
async function fetchAuthTokenFromMyProvider () {
   const bearer: string = await myProvider.getBearerToken()
   const token: AuthToken = neo4j.auth.bearer(bearer)
   const expiration: Date = myProvider.getExpiryDate()  
   return {
      token,
      // if expiration is not provided, 
      // the driver will only fetch a new token when a failure happens
      expiration 
   }
}

const driver = neo4j.driver(
    'neo4j://localhost:7687', 
    neo4j.authTokenManagers.bearer({ 
        tokenProvider: fetchAuthTokenFromMyProvider 
    })
)

import neo4j, { AuthToken } from 'neo4j-driver'

/**
* Method called whenever the driver needs to refresh the token.
*
* Important, the driver will block all the connections creation until
* this function resolves the new auth token.
*/
async function fetchMyUserAndPassword () {
  const { user, password } = await myProvider.getUserAndPassword()
  return neo4j.auth.basic(user, password)  
}

const driver = neo4j.driver(
   'neo4j://localhost:7687', 
   neo4j.authTokenManagers.basic({ 
       tokenProvider: fetchMyUserAndPassword 
   })
)