Sequelize在一个文件中工作，但不在另一个文件中

Question

我已经在两个不同的js文件中初始化了下面的代码，即users.js和customers.js

//sequelize
var sequelize = new Sequelize(process.env.DATABASE_STAGING, process.env.USER_STAGING, process.env.PASSWORD_STAGING, {
  host: process.env.HOST_STAGING,
  dialect: 'mysql',
  logging: false
});

sequelize
  .authenticate()
  .then(() => {
    console.log('Connection has been established successfully.');
  })
  .catch(err => {
    console.error('Unable to connect to the database:', err);
  });

我不确定这是否会导致我无法解决的错误：

Unhandled rejection SequelizeConnectionError: Client does not support authentication protocol requested by server; consider upgrading MySQL client

如何在一个文件中分隔Sequelize初始化并在另一个文件中使用它？