Merge pull request #4183 from ggarek/feature/sequelize-belongs-to-many

feat(sequelize): add belongsToMany definition

sequelize/sequelize-tests.ts

@@ -101,6 +101,8 @@ model.belongsTo<modelInst, modelPojo>(model);
 model.belongsTo<modelInst, modelPojo>(model, assocOpts);
 model.hasMany<modelInst, modelPojo>(model);
 model.hasMany<modelInst, modelPojo>(model, assocOpts);
+model.belongsToMany<modelInst, modelPojo>(model);
+model.belongsToMany<modelInst, modelPojo>(model, assocOpts);
 
 promiseMe = model.sync();
 promiseMe = model.drop(dropOpts);

sequelize/sequelize.d.ts

@@ -909,6 +909,14 @@ declare module "sequelize"
              */
             belongsTo<TInstance, TPojo>(target: Model<TInstance, TPojo>, options?: AssociationOptions): void;
 
+            /**
+             * Creates an association to connect sources with multiple targets. Furthermore the targets can also have connections to multiple sources.
+             *
+             * @param target
+             * @param options
+             */
+            belongsToMany<TInstance, TPojo>(target: Model<TInstance, TPojo>, options?: AssociationOptions): void;
+
             /**
              * Create an association that is either 1:m or n:m.
              *