Sequelize/packages/cli/static/skeletons/migration.mjs

/** @type {import('@sequelize/cli').MigrationFunction} */
export async function up(queryInterface, sequelize) {
  /**
   * Add altering commands here.
   *
   * Example:
   * await queryInterface.createTable('users', { id: Sequelize.INTEGER });
   */
}

/** @type {import('@sequelize/cli').MigrationFunction} */
export async function down(queryInterface, sequelize) {
  /**
   * Add reverting commands here.
   *
   * Example:
   * await queryInterface.dropTable('users');
   */
}