nginx-proxy-manager/backend/lib/migrate_template.js

const migrate_name = 'identifier_for_migrate';
const logger       = require('../logger').migrate;

/**
 * Migrate
 *
 * @see http://knexjs.org/#Schema
 *
 * @param {Object} knex
 * @param {Promise} Promise
 * @returns {Promise}
 */
exports.up = function (knex, Promise) {

	logger.info('[' + migrate_name + '] Migrating Up...');

	// Create Table example:

	/*return knex.schema.createTable('notification', (table) => {
		 table.increments().primary();
		 table.string('name').notNull();
		 table.string('type').notNull();
		 table.integer('created_on').notNull();
		 table.integer('modified_on').notNull();
	 })
	 .then(function () {
		logger.info('[' + migrate_name + '] Notification Table created');
	 });*/

	logger.info('[' + migrate_name + '] Migrating Up Complete');

	return Promise.resolve(true);
};

/**
 * Undo Migrate
 *
 * @param {Object} knex
 * @param {Promise} Promise
 * @returns {Promise}
 */
exports.down = function (knex, Promise) {
	logger.info('[' + migrate_name + '] Migrating Down...');

	// Drop table example:

	/*return knex.schema.dropTable('notification')
	 .then(() => {
		logger.info('[' + migrate_name + '] Notification Table dropped');
	 });*/

	logger.info('[' + migrate_name + '] Migrating Down Complete');

	return Promise.resolve(true);
};