fix null constructor and use default export for TS

Author: inso-

bin/makemigration.js

@@ -69,7 +69,7 @@ try {
 } catch (e) { }
 
 //console.log(path.join(migrationsDir, '_current.json'), JSON.parse(fs.readFileSync(path.join(migrationsDir, '_current.json') )))
-let sequelize = require(modelsDir).sequelize;
+let sequelize = require(modelsDir).default;
 
 let models = sequelize.models;
 

bin/runmigration.js

@@ -50,7 +50,7 @@ if (options.help)
     process.exit(0);
 }
 
-const sequelize = require(modelsDir).sequelize;
+const sequelize = require(modelsDir).default;
 const queryInterface = sequelize.getQueryInterface();
 
 // execute all migration from

lib/migrate.js

@@ -196,7 +196,11 @@ const reverseModels = function(sequelize, models)
 
                 if (property === 'defaultValue')
                 {
-                    let _val = reverseSequelizeDefValueType(attributes[column][property]);
+                    let _val = {}
+                    if (attributes[column][property] != null)
+                        _val = reverseSequelizeDefValueType(attributes[column][property]);
+                    else
+                        _val.notSupported = true;
                     if (_val.notSupported)
                     {
                         log(`[Not supported] Skip defaultValue column of attribute ${model}:${column}`);