How do I set up Sequelize in my Node.js project?

How do I set up Sequelize in my Node.js project?

To set up Sequelize, first install it using npm: npm install sequelize. You also need to install the database driver, like pg for PostgreSQL.

What configuration do I need to connect to my database?

You need to create a Sequelize instance with your database credentials. For example:

const { Sequelize } = require('sequelize');
const sequelize = new Sequelize('database', 'username', 'password', {
  host: 'localhost',
  dialect: 'postgres',
});

How can I test if the connection is successful?

You can test the connection by calling sequelize.authenticate() and handling the promise:

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

What should I do if I encounter an error?

Check your database credentials, ensure the database server is running, and verify that the correct dialect is specified.