fix(query-interface): allow passing null for query interface insert (#11931)

types/lib/model.d.ts

@@ -151,10 +151,10 @@ export interface WhereOperators {
   [Op.lte]?: number | string | Date | Literal;
 
   /** Example: `[Op.ne]: 20,` becomes `!= 20` */
-  [Op.ne]?: string | number | Literal | WhereOperators;
+  [Op.ne]?: null | string | number | Literal | WhereOperators;
 
   /** Example: `[Op.not]: true,` becomes `IS NOT TRUE` */
-  [Op.not]?: boolean | string | number | Literal | WhereOperators;
+  [Op.not]?: null | boolean | string | number | Literal | WhereOperators;
 
   /** Example: `[Op.between]: [6, 10],` becomes `BETWEEN 6 AND 10` */
   [Op.between]?: [number, number];

types/lib/query-interface.d.ts

@@ -451,7 +451,7 @@ export class QueryInterface {
   /**
    * Inserts a new record
    */
-  public insert(instance: Model, tableName: string, values: object, options?: QueryOptions): Promise<object>;
+  public insert(instance: Model | null, tableName: string, values: object, options?: QueryOptions): Promise<object>;
 
   /**
    * Inserts or Updates a record in the database
@@ -473,7 +473,7 @@ export class QueryInterface {
     records: object[],
     options?: QueryOptions,
     attributes?: string[] | string
-  ): Promise<object>;
+  ): Promise<object | number>;
 
   /**
    * Updates a row

types/test/query-interface.ts

@@ -53,7 +53,7 @@ queryInterface.dropTable('nameOfTheExistingTable');
 
 queryInterface.bulkDelete({ tableName: 'foo', schema: 'bar' }, {}, {});
 
-queryInterface.bulkInsert({ tableName: 'foo', as: 'bar', name: 'as' }, [{}], {});
+const bulkInsertRes: Promise<number | object> = queryInterface.bulkInsert({ tableName: 'foo', as: 'bar', name: 'as' }, [{}], {});
 
 queryInterface.bulkUpdate({ tableName: 'foo', delimiter: 'bar', as: 'baz', name: 'quz' }, {}, {});
 
@@ -181,3 +181,5 @@ queryInterface.delete(null, 'Person', {
 });
 
 queryInterface.upsert("test", {"a": 1}, {"b": 2}, {"c": 3}, Model, {});
+
+queryInterface.insert(null, 'test', {});