sequelize-middleware/models/index.js

const fs = require("fs");
const path = require("path");
const Sequelize = require("sequelize");

const basename = path.basename(__filename);
const env = process.env.NODE_ENV;
// eslint-disable-next-line import/no-dynamic-require
const config = require(`${__dirname}/../config/config.json`)[env];
const db = {};

const sequelize = new Sequelize(
  config.database,
  config.username,
  config.password,
  config
);

fs.readdirSync(__dirname)
  .filter(file => {
    return (
      file.indexOf(".") !== 0 && file !== basename && file.slice(-3) === ".js"
    );
  })
  .forEach(file => {
    const model = sequelize.import(path.join(__dirname, file));
    db[model.name] = model;
  });

Object.keys(db).forEach(modelName => {
  if (db[modelName].associate) {
    db[modelName].associate(db);
  }
});

db.sequelize = sequelize;
db.Sequelize = Sequelize;

module.exports = db;