Convert backend to ESM

- About 5 years overdue
- Remove eslint, use bomejs instead

backend/migrations/20210423103500_stream_domain.js

@@ -1,40 +1,43 @@
-const migrate_name = 'stream_domain';
-const logger       = require('../logger').migrate;
+import { migrate as logger } from "../logger.js";
+
+const migrateName = "stream_domain";
 
 /**
-	* 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...');
+ * Migrate
+ *
+ * @see http://knexjs.org/#Schema
+ *
+ * @param   {Object} knex
+ * @returns {Promise}
+ */
+const up = (knex) => {
+	logger.info(`[${migrateName}] Migrating Up...`);
 
-	return knex.schema.table('stream', (table) => {
-		table.renameColumn('forward_ip', 'forwarding_host');
-	})
-		.then(function () {
-			logger.info('[' + migrate_name + '] stream Table altered');
+	return knex.schema
+		.table("stream", (table) => {
+			table.renameColumn("forward_ip", "forwarding_host");
+		})
+		.then(() => {
+			logger.info(`[${migrateName}] stream Table altered`);
 		});
 };
 
 /**
-	* Undo Migrate
-	*
-	* @param   {Object} knex
-	* @param   {Promise} Promise
-	* @returns {Promise}
-	*/
-exports.down = function (knex/*, Promise*/) {
-	logger.info('[' + migrate_name + '] Migrating Down...');
+ * Undo Migrate
+ *
+ * @param   {Object} knex
+ * @returns {Promise}
+ */
+const down = (knex) => {
+	logger.info(`[${migrateName}] Migrating Down...`);
 
-	return knex.schema.table('stream', (table) => {
-		table.renameColumn('forwarding_host', 'forward_ip');
-	})
-		.then(function () {
-			logger.info('[' + migrate_name + '] stream Table altered');
+	return knex.schema
+		.table("stream", (table) => {
+			table.renameColumn("forwarding_host", "forward_ip");
+		})
+		.then(() => {
+			logger.info(`[${migrateName}] stream Table altered`);
 		});
 };
+
+export { up, down };