fix(typings): `comparator` arg of `Sequelize.where` (#11843)

types/lib/sequelize.d.ts

@@ -1450,7 +1450,7 @@ export function or(...args: (WhereOperators | WhereAttributeHash | Where)[]): Or
 export function json(conditionsOrPath: string | object, value?: string | number | boolean): Json;
 
 export type AttributeType = Fn | Col | Literal | ModelAttributeColumnOptions | string;
-export type LogicType = Fn | Col | Literal | OrOperator | AndOperator | WhereOperators | string;
+export type LogicType = Fn | Col | Literal | OrOperator | AndOperator | WhereOperators | string | symbol | null;
 
 /**
  * A way of specifying attr = condition.
@@ -1470,7 +1470,7 @@ export type LogicType = Fn | Col | Literal | OrOperator | AndOperator | WhereOpe
  * @param logic The condition. Can be both a simply type, or a further condition (`.or`, `.and`, `.literal`
  *   etc.)
  */
-export function where(attr: AttributeType, comparator: string, logic: LogicType): Where;
+export function where(attr: AttributeType, comparator: string | symbol, logic: LogicType): Where;
 export function where(attr: AttributeType, logic: LogicType): Where;
 
 export default Sequelize;

types/test/where.ts

@@ -325,3 +325,13 @@ Sequelize.where(
         [Op.notILike]: Sequelize.literal('LIT')
     }
 )
+
+Sequelize.where(Sequelize.col("ABS"), Op.is, null);
+
+Sequelize.where(
+  Sequelize.fn("ABS", Sequelize.col("age")),
+  Op.like,
+  Sequelize.fn("ABS", Sequelize.col("age"))
+);
+
+Sequelize.where(Sequelize.col("ABS"), null);