fix(types): add instance member declaration (sequelize#13684)

* fix(types): add instance member declaration

* test(types): add static/instance members test cases

Co-authored-by: Sascha Depold <sdepold@users.noreply.github.com>

types/lib/sequelize.d.ts

@@ -426,6 +426,7 @@ export class Sequelize extends Hooks {
    * @param args All further arguments will be passed as arguments to the function
    */
   public static fn: typeof fn;
+  public fn: typeof fn;
 
   /**
    * Creates a object representing a column in the DB. This is often useful in conjunction with
@@ -434,6 +435,7 @@ export class Sequelize extends Hooks {
    * @param col The name of the column
    */
   public static col: typeof col;
+  public col: typeof col;
 
   /**
    * Creates a object representing a call to the cast function.
@@ -442,27 +444,31 @@ export class Sequelize extends Hooks {
    * @param type The type to cast it to
    */
   public static cast: typeof cast;
+  public cast: typeof cast;
 
   /**
    * Creates a object representing a literal, i.e. something that will not be escaped.
    *
    * @param val
    */
   public static literal: typeof literal;
+  public literal: typeof literal;
 
   /**
    * An AND query
    *
    * @param args Each argument will be joined by AND
    */
   public static and: typeof and;
+  public and: typeof and;
 
   /**
    * An OR query
    *
    * @param args Each argument will be joined by OR
    */
   public static or: typeof or;
+  public or: typeof or;
 
   /**
    * Creates an object representing nested where conditions for postgres's json data-type.
@@ -473,6 +479,7 @@ export class Sequelize extends Hooks {
    *   '<value>'".
    */
   public static json: typeof json;
+  public json: typeof json;
 
   /**
    * A way of specifying attr = condition.
@@ -493,6 +500,7 @@ export class Sequelize extends Hooks {
    *   etc.)
    */
   public static where: typeof where;
+  public where: typeof where;
 
   /**
    * A hook that is run before validation

types/test/sequelize.ts

@@ -1,4 +1,4 @@
-import { Config, Sequelize, Model, QueryTypes, ModelCtor } from 'sequelize';
+import { Config, Sequelize, Model, QueryTypes, ModelCtor, Op } from 'sequelize';
 import { Fn } from 'sequelize/lib/utils';
 
 Sequelize.useCLS({
@@ -20,6 +20,24 @@ export const sequelize = new Sequelize({
   }
 });
 
+// static members
+Sequelize.fn('max', Sequelize.col('age'))
+Sequelize.literal('1-2')
+Sequelize.cast('123', 'integer')
+Sequelize.and()
+Sequelize.or()
+Sequelize.json('data.id')
+Sequelize.where(Sequelize.col("ABS"), Op.is, null);
+
+// instance members
+sequelize.fn('max', sequelize.col('age'))
+sequelize.literal('1-2')
+sequelize.cast('123', 'integer')
+sequelize.and()
+sequelize.or()
+sequelize.json('data.id')
+sequelize.where(sequelize.col("ABS"), Op.is, null);
+
 const databaseName = sequelize.getDatabaseName();
 
 const conn = sequelize.connectionManager;