feat: deprecate accessing DataTypes directly on Sequelize class

src/associations/belongs-to-many.js

@@ -17,7 +17,7 @@ const { Op } = require('../operators');
  *
  * ```js
  * UserProject = sequelize.define('user_project', {
- *   role: Sequelize.STRING
+ *   role: DataTypes.STRING
  * });
  * User.belongsToMany(Project, { through: UserProject });
  * Project.belongsToMany(User, { through: UserProject });

src/deferrable.ts

@@ -17,7 +17,7 @@ type AbstractQueryGenerator = any;
  * class MyModel extends Model {}
  * MyModel.init({
  *   foreign_id: {
- *     type: Sequelize.INTEGER,
+ *     type: DataTypes.INTEGER,
  *     references: {
  *       model: OtherModel,
  *       key: 'id',

src/dialects/abstract/query-interface.js

@@ -145,26 +145,26 @@ export class QueryInterface {
    *   'nameOfTheNewTable',
    *   {
    *     id: {
-   *       type: Sequelize.INTEGER,
+   *       type: DataTypes.INTEGER,
    *       primaryKey: true,
    *       autoIncrement: true
    *     },
    *     createdAt: {
-   *       type: Sequelize.DATE
+   *       type: DataTypes.DATE
    *     },
    *     updatedAt: {
-   *       type: Sequelize.DATE
+   *       type: DataTypes.DATE
    *     },
-   *     attr1: Sequelize.STRING,
-   *     attr2: Sequelize.INTEGER,
+   *     attr1: DataTypes.STRING,
+   *     attr2: DataTypes.INTEGER,
    *     attr3: {
-   *       type: Sequelize.BOOLEAN,
+   *       type: DataTypes.BOOLEAN,
    *       defaultValue: false,
    *       allowNull: false
    *     },
    *     //foreign key usage
    *     attr4: {
-   *       type: Sequelize.INTEGER,
+   *       type: DataTypes.INTEGER,
    *       references: {
    *         model: 'another_table_name',
    *         key: 'id'
@@ -395,7 +395,7 @@ export class QueryInterface {
    * Add a new column to a table
    *
    * ```js
-   * queryInterface.addColumn('tableA', 'columnC', Sequelize.STRING, {
+   * queryInterface.addColumn('tableA', 'columnC', DataTypes.STRING, {
    *    after: 'columnB' // after option is only supported by MySQL
    * });
    * ```

src/sequelize.d.ts

@@ -1165,7 +1165,7 @@ export class Sequelize extends Hooks {
    * class MyModel extends Model {}
    * MyModel.init({
    *   columnA: {
-   *     type: Sequelize.BOOLEAN,
+   *     type: DataTypes.BOOLEAN,
    *     validate: {
    *       is: ["[a-z]",'i'],    // will only allow letters
    *       max: 23,          // only allow values <= 23
@@ -1177,7 +1177,7 @@ export class Sequelize extends Hooks {
    *     field: 'column_a'
    *     // Other attributes here
    *   },
-   *   columnB: Sequelize.STRING,
+   *   columnB: DataTypes.STRING,
    *   columnC: 'MY VERY OWN COLUMN TYPE'
    * }, { sequelize })
    *

src/sequelize.js

@@ -1,5 +1,6 @@
 'use strict';
 
+import { noSequelizeDataType } from './utils/deprecations';
 import { isSameInitialModel, isModelStatic } from './utils/model-utils';
 
 const url = require('url');
@@ -439,7 +440,7 @@ export class Sequelize {
    * @example
    * sequelize.define('modelName', {
    *   columnA: {
-   *       type: Sequelize.BOOLEAN,
+   *       type: DataTypes.BOOLEAN,
    *       validate: {
    *         is: ["[a-z]",'i'],        // will only allow letters
    *         max: 23,                  // only allow values <= 23
@@ -450,7 +451,7 @@ export class Sequelize {
    *       },
    *       field: 'column_a'
    *   },
-   *   columnB: Sequelize.STRING,
+   *   columnB: DataTypes.STRING,
    *   columnC: 'MY VERY OWN COLUMN TYPE'
    * });
    *
@@ -1269,8 +1270,14 @@ Sequelize.HasMany = HasMany;
 Sequelize.BelongsToMany = BelongsToMany;
 
 Sequelize.DataTypes = DataTypes;
-for (const dataType in DataTypes) {
-  Sequelize[dataType] = DataTypes[dataType];
+for (const dataTypeName in DataTypes) {
+  Object.defineProperty(Sequelize, dataTypeName, {
+    get() {
+      noSequelizeDataType();
+
+      return DataTypes[dataTypeName];
+    },
+  });
 }
 
 /**

src/utils/deprecations.ts

@@ -11,3 +11,5 @@ export const unsupportedEngine = deprecate(noop, 'This database engine version i
 export const useErrorCause = deprecate(noop, 'The "parent" and "original" properties in Sequelize errors have been replaced with the native "cause" property. Use that one instead.', 'SEQUELIZE0007');
 export const scopeRenamedToWithScope = deprecate(noop, 'Model.scope has been renamed to Model.withScope, and Model.unscoped has been renamed to Model.withoutScope', 'SEQUELIZE0008');
 export const schemaRenamedToWithSchema = deprecate(noop, 'Model.schema has been renamed to Model.withSchema', 'SEQUELIZE0009');
+export const noSequelizeDataType = deprecate(noop, `Accessing DataTypes on the Sequelize constructor is deprecated. Use the DataTypes object instead.
+e.g, instead of using Sequelize.STRING, use DataTypes.STRING`, 'SEQUELIZE0010');

test/integration/associations/belongs-to-many.test.js

@@ -1878,7 +1878,7 @@ describe(Support.getTestDialectTeaser('BelongsToMany'), () => {
       const User = this.sequelize.define('user', {});
       const Group = this.sequelize.define('group', {});
       const UserGroups = this.sequelize.define('user_groups', {
-        isAdmin: Sequelize.BOOLEAN,
+        isAdmin: DataTypes.BOOLEAN,
       });
 
       User.belongsToMany(Group, { through: UserGroups });
@@ -1978,7 +1978,7 @@ describe(Support.getTestDialectTeaser('BelongsToMany'), () => {
         const Task = sequelize.define('Task', { title: DataTypes.STRING });
 
         const UserTask = sequelize.define('UserTask', {
-          status: Sequelize.STRING,
+          status: DataTypes.STRING,
         });
 
         User.belongsToMany(Task, { through: UserTask });
@@ -2181,16 +2181,16 @@ describe(Support.getTestDialectTeaser('BelongsToMany'), () => {
   describe('through model validations', () => {
     beforeEach(async function () {
       const Project = this.sequelize.define('Project', {
-        name: Sequelize.STRING,
+        name: DataTypes.STRING,
       });
 
       const Employee = this.sequelize.define('Employee', {
-        name: Sequelize.STRING,
+        name: DataTypes.STRING,
       });
 
       const Participation = this.sequelize.define('Participation', {
         role: {
-          type: Sequelize.STRING,
+          type: DataTypes.STRING,
           allowNull: false,
           validate: {
             len: {
@@ -2620,14 +2620,14 @@ describe(Support.getTestDialectTeaser('BelongsToMany'), () => {
 
       this.UserTasks = this.sequelize.define('usertasks', {
         id: {
-          type: Sequelize.INTEGER,
+          type: DataTypes.INTEGER,
           autoincrement: true,
           primaryKey: true,
         },
       });
       this.UserTasks2 = this.sequelize.define('usertasks2', {
         userTasksId: {
-          type: Sequelize.INTEGER,
+          type: DataTypes.INTEGER,
           autoincrement: true,
           primaryKey: true,
         },
@@ -2927,9 +2927,9 @@ describe(Support.getTestDialectTeaser('BelongsToMany'), () => {
         });
 
         it('should be able to create an instance along with its many-to-many association which has an extra column in the junction table', async function () {
-          const Foo = this.sequelize.define('foo', { name: Sequelize.STRING });
-          const Bar = this.sequelize.define('bar', { name: Sequelize.STRING });
-          const FooBar = this.sequelize.define('foobar', { baz: Sequelize.STRING });
+          const Foo = this.sequelize.define('foo', { name: DataTypes.STRING });
+          const Bar = this.sequelize.define('bar', { name: DataTypes.STRING });
+          const FooBar = this.sequelize.define('foobar', { baz: DataTypes.STRING });
           Foo.belongsToMany(Bar, { through: FooBar });
           Bar.belongsToMany(Foo, { through: FooBar });
 
@@ -3093,8 +3093,8 @@ describe(Support.getTestDialectTeaser('BelongsToMany'), () => {
 
   describe('belongsTo and hasMany at once', () => {
     beforeEach(function () {
-      this.A = this.sequelize.define('a', { name: Sequelize.STRING });
-      this.B = this.sequelize.define('b', { name: Sequelize.STRING });
+      this.A = this.sequelize.define('a', { name: DataTypes.STRING });
+      this.B = this.sequelize.define('b', { name: DataTypes.STRING });
     });
 
     describe('source belongs to target', () => {
@@ -3207,8 +3207,8 @@ describe(Support.getTestDialectTeaser('BelongsToMany'), () => {
 
   describe('multiple hasMany', () => {
     beforeEach(function () {
-      this.User = this.sequelize.define('user', { name: Sequelize.STRING });
-      this.Project = this.sequelize.define('project', { projectName: Sequelize.STRING });
+      this.User = this.sequelize.define('user', { name: DataTypes.STRING });
+      this.Project = this.sequelize.define('project', { projectName: DataTypes.STRING });
     });
 
     describe('project has owners and users and owners and users have projects', () => {
@@ -3411,7 +3411,7 @@ describe(Support.getTestDialectTeaser('BelongsToMany'), () => {
         const Project = this.sequelize.define('project', {});
         const User = this.sequelize.define('user', {
           uid: {
-            type: Sequelize.INTEGER,
+            type: DataTypes.INTEGER,
             primaryKey: true,
           },
         });
@@ -3426,7 +3426,7 @@ describe(Support.getTestDialectTeaser('BelongsToMany'), () => {
 
     it('should throw an error if foreignKey and as result in a name clash', function () {
       const User = this.sequelize.define('user', {
-        user: Sequelize.INTEGER,
+        user: DataTypes.INTEGER,
       });
 
       expect(User.belongsToMany.bind(User, User, { as: 'user', through: 'UserUser' })).to
@@ -3437,7 +3437,7 @@ describe(Support.getTestDialectTeaser('BelongsToMany'), () => {
   describe('thisAssociations', () => {
     it('should work with this reference', async function () {
       const User = this.sequelize.define('User', {
-        name: Sequelize.STRING(100),
+        name: DataTypes.STRING(100),
       });
       const Follow = this.sequelize.define('Follow');
 
@@ -3461,7 +3461,7 @@ describe(Support.getTestDialectTeaser('BelongsToMany'), () => {
 
     it('should work with custom this reference', async function () {
       const User = this.sequelize.define('User', {
-        name: Sequelize.STRING(100),
+        name: DataTypes.STRING(100),
       });
       const UserFollowers = this.sequelize.define('UserFollower');
 
@@ -3527,10 +3527,10 @@ describe(Support.getTestDialectTeaser('BelongsToMany'), () => {
   describe('Eager loading', () => {
     beforeEach(function () {
       this.Individual = this.sequelize.define('individual', {
-        name: Sequelize.STRING,
+        name: DataTypes.STRING,
       });
       this.Hat = this.sequelize.define('hat', {
-        name: Sequelize.STRING,
+        name: DataTypes.STRING,
       });
       this.Event = this.sequelize.define('event', {});
       this.Individual.belongsToMany(this.Hat, {

test/integration/associations/belongs-to.test.js

@@ -83,8 +83,8 @@ describe(Support.getTestDialectTeaser('BelongsTo'), () => {
     }
 
     it('should be able to handle a where object that\'s a first class citizen.', async function () {
-      const User = this.sequelize.define('UserXYZ', { username: Sequelize.STRING, gender: Sequelize.STRING });
-      const Task = this.sequelize.define('TaskXYZ', { title: Sequelize.STRING, status: Sequelize.STRING });
+      const User = this.sequelize.define('UserXYZ', { username: DataTypes.STRING, gender: DataTypes.STRING });
+      const Task = this.sequelize.define('TaskXYZ', { title: DataTypes.STRING, status: DataTypes.STRING });
 
       Task.belongsTo(User);
 
@@ -104,8 +104,8 @@ describe(Support.getTestDialectTeaser('BelongsTo'), () => {
     });
 
     it('supports schemas', async function () {
-      const User = this.sequelize.define('UserXYZ', { username: Sequelize.STRING, gender: Sequelize.STRING }).schema('archive');
-      const Task = this.sequelize.define('TaskXYZ', { title: Sequelize.STRING, status: Sequelize.STRING }).schema('archive');
+      const User = this.sequelize.define('UserXYZ', { username: DataTypes.STRING, gender: DataTypes.STRING }).schema('archive');
+      const Task = this.sequelize.define('TaskXYZ', { title: DataTypes.STRING, status: DataTypes.STRING }).schema('archive');
 
       Task.belongsTo(User);
 
@@ -132,15 +132,15 @@ describe(Support.getTestDialectTeaser('BelongsTo'), () => {
     it('supports schemas when defining custom foreign key attribute #9029', async function () {
       const User = this.sequelize.define('UserXYZ', {
         uid: {
-          type: Sequelize.INTEGER,
+          type: DataTypes.INTEGER,
           primaryKey: true,
           autoIncrement: true,
           allowNull: false,
         },
       }).schema('archive');
       const Task = this.sequelize.define('TaskXYZ', {
         user_id: {
-          type: Sequelize.INTEGER,
+          type: DataTypes.INTEGER,
           references: { model: User, key: 'uid' },
         },
       }).schema('archive');
@@ -365,8 +365,8 @@ describe(Support.getTestDialectTeaser('BelongsTo'), () => {
 
   describe('foreign key', () => {
     it('should setup underscored field with foreign keys when using underscored', function () {
-      const User = this.sequelize.define('User', { username: Sequelize.STRING }, { underscored: true });
-      const Account = this.sequelize.define('Account', { name: Sequelize.STRING }, { underscored: true });
+      const User = this.sequelize.define('User', { username: DataTypes.STRING }, { underscored: true });
+      const Account = this.sequelize.define('Account', { name: DataTypes.STRING }, { underscored: true });
 
       User.belongsTo(Account);
 
@@ -375,8 +375,8 @@ describe(Support.getTestDialectTeaser('BelongsTo'), () => {
     });
 
     it('should use model name when using camelcase', function () {
-      const User = this.sequelize.define('User', { username: Sequelize.STRING }, { underscored: false });
-      const Account = this.sequelize.define('Account', { name: Sequelize.STRING }, { underscored: false });
+      const User = this.sequelize.define('User', { username: DataTypes.STRING }, { underscored: false });
+      const Account = this.sequelize.define('Account', { name: DataTypes.STRING }, { underscored: false });
 
       User.belongsTo(Account);
 
@@ -385,8 +385,8 @@ describe(Support.getTestDialectTeaser('BelongsTo'), () => {
     });
 
     it('should support specifying the field of a foreign key', async function () {
-      const User = this.sequelize.define('User', { username: Sequelize.STRING }, { underscored: false });
-      const Account = this.sequelize.define('Account', { title: Sequelize.STRING }, { underscored: false });
+      const User = this.sequelize.define('User', { username: DataTypes.STRING }, { underscored: false });
+      const Account = this.sequelize.define('Account', { title: DataTypes.STRING }, { underscored: false });
 
       User.belongsTo(Account, {
         foreignKey: {
@@ -552,8 +552,8 @@ describe(Support.getTestDialectTeaser('BelongsTo'), () => {
     });
 
     it('should be possible to disable them', async function () {
-      const Task = this.sequelize.define('Task', { title: Sequelize.STRING });
-      const User = this.sequelize.define('User', { username: Sequelize.STRING });
+      const Task = this.sequelize.define('Task', { title: DataTypes.STRING });
+      const User = this.sequelize.define('User', { username: DataTypes.STRING });
 
       Task.belongsTo(User, { constraints: false });
 
@@ -828,13 +828,13 @@ describe(Support.getTestDialectTeaser('BelongsTo'), () => {
       it('works when taking a column directly from the object', function () {
         const User = this.sequelize.define('user', {
           uid: {
-            type: Sequelize.INTEGER,
+            type: DataTypes.INTEGER,
             primaryKey: true,
           },
         });
         const Profile = this.sequelize.define('project', {
           user_id: {
-            type: Sequelize.INTEGER,
+            type: DataTypes.INTEGER,
             allowNull: false,
           },
         });
@@ -851,7 +851,7 @@ describe(Support.getTestDialectTeaser('BelongsTo'), () => {
         const Task = this.sequelize.define('task', {
           projectId: {
             defaultValue: 42,
-            type: Sequelize.INTEGER,
+            type: DataTypes.INTEGER,
           },
         });
         const Project = this.sequelize.define('project', {});
@@ -875,7 +875,7 @@ describe(Support.getTestDialectTeaser('BelongsTo'), () => {
     it('should throw an error if an association clashes with the name of an already define attribute', function () {
       const Person = this.sequelize.define('person', {});
       const Car = this.sequelize.define('car', {
-        person: Sequelize.INTEGER,
+        person: DataTypes.INTEGER,
       });
 
       expect(Car.belongsTo.bind(Car, Person, { as: 'person' })).to
@@ -886,10 +886,10 @@ describe(Support.getTestDialectTeaser('BelongsTo'), () => {
   describe('Eager loading', () => {
     beforeEach(function () {
       this.Individual = this.sequelize.define('individual', {
-        name: Sequelize.STRING,
+        name: DataTypes.STRING,
       });
       this.Hat = this.sequelize.define('hat', {
-        name: Sequelize.STRING,
+        name: DataTypes.STRING,
       });
       this.Individual.belongsTo(this.Hat, {
         as: 'personwearinghat',