requested changes

Author: aditi-khare-mongoDB

docs/guide.md

@@ -80,6 +80,7 @@ The permitted SchemaTypes are:
 * [Decimal128](api/mongoose.html#mongoose_Mongoose-Decimal128)
 * [Map](schematypes.html#maps)
 * [UUID](schematypes.html#uuid)
+* [Int32](schematypes.html#int32)
 
 Read more about [SchemaTypes here](schematypes.html).
 

docs/schematypes.md

@@ -55,6 +55,7 @@ Check out [Mongoose's plugins search](http://plugins.mongoosejs.io) to find plug
 * [Schema](#schemas)
 * [UUID](#uuid)
 * [BigInt](#bigint)
+* [Int32](#int32)
 
 ### Example
 
@@ -68,6 +69,7 @@ const schema = new Schema({
   mixed: Schema.Types.Mixed,
   _someId: Schema.Types.ObjectId,
   decimal: Schema.Types.Decimal128,
+  32bitInt: Schema.Types.Int32,
   array: [],
   ofString: [String],
   ofNumber: [Number],
@@ -647,6 +649,21 @@ const question = new Question({ answer: 42n });
 typeof question.answer; // 'bigint'
 ```
 
+### Int32 {#int32}
+
+Mongoose supports 32-bit integers as a SchemaType.
+Int32s are stored as [32-bit integers in MongoDB (BSON type "int")](https://www.mongodb.com/docs/manual/reference/bson-types/).
+
+```javascript
+const studentsSchema = new Schema({
+  id: Int32
+});
+const Student = mongoose.model('Student', schema);
+
+const student = new Student({ id: 1339 });
+typeof student.id; // 'number'
+```
+
 ## Getters {#getters}
 
 Getters are like virtuals for paths defined in your schema. For example,

docs/source/api.js

@@ -40,7 +40,8 @@ const files = [
   'lib/types/subdocument.js',
   'lib/types/arraySubdocument.js',
   'lib/types/buffer.js',
-  'lib/types/.js',
+  'lib/types/decimal128.js',
+  'lib/types/int32.js',
   'lib/types/map.js',
   'lib/types/array/methods/index.js'
 ];

index.js

@@ -46,6 +46,7 @@ module.exports.Decimal128 = mongoose.Decimal128;
 module.exports.Mixed = mongoose.Mixed;
 module.exports.Date = mongoose.Date;
 module.exports.Number = mongoose.Number;
+module.exports.Int32 = mongoose.Int32;
 module.exports.Error = mongoose.Error;
 module.exports.MongooseError = mongoose.MongooseError;
 module.exports.now = mongoose.now;

lib/browser.js

@@ -50,7 +50,7 @@ exports.Schema = require('./schema');
  * - [ObjectId](https://mongoosejs.com/docs/schematypes.html#objectids)
  * - [Map](https://mongoosejs.com/docs/schematypes.html#maps)
  * - [Subdocument](https://mongoosejs.com/docs/schematypes.html#schemas)
- * - Int32
+ * - [Int32](https://mongoosejs.com/docs/schematypes.html#int32)
  *
  * Using this exposed access to the `ObjectId` type, we can construct ids on demand.
  *

lib/cast/int32.js

@@ -27,7 +27,7 @@ module.exports = function castInt32(val) {
 
     const _val = Number(val);
 
-    if (!isNaN(_val) && _val === Math.round(_val) && _val > INT32_MIN && _val < INT32_MAX) {
+    if (_val !== _val | 0 && _val > INT32_MIN && _val < INT32_MAX) {
       return _val;
     }
     assert.ok(false);

lib/drivers/browser/int32.js

@@ -0,0 +1,7 @@
+/*!
+ * ignore
+ */
+
+'use strict';
+
+module.exports = require('bson').Int32;

lib/mongoose.js

@@ -987,7 +987,7 @@ Mongoose.prototype.VirtualType = VirtualType;
  * - [ObjectId](https://mongoosejs.com/docs/schematypes.html#objectids)
  * - [Map](https://mongoosejs.com/docs/schematypes.html#maps)
  * - [Subdocument](https://mongoosejs.com/docs/schematypes.html#schemas)
- * - Int32
+ * - [Int32](https://mongoosejs.com/docs/schematypes.html#int32)
  *
  * Using this exposed access to the `ObjectId` type, we can construct ids on demand.
  *
@@ -1142,15 +1142,15 @@ Mongoose.prototype.Decimal128 = SchemaTypes.Decimal128;
 
 /**
  * The Mongoose Int32 [SchemaType](https://mongoosejs.com/docs/schematypes.html). Used for
- * declaring paths in your schema that should be 32-bit integers floating points.
+ * declaring paths in your schema that should be 32-bit integers.
  * Do not use this to create a new Int32 instance, use `mongoose.Types.Int32`
  * instead.
  *
  * #### Example:
  *
- *     const vehicleSchema = new Schema({ numberOfCows: mongoose.Int32 });
+ *     const vehicleSchema = new Schema({ numTires: mongoose.Int32 });
  *
- * @property Decimal128
+ * @property Int32
  * @api public
  */
 Mongoose.prototype.Int32 = SchemaTypes.Int32;

lib/query.js

@@ -1634,7 +1634,6 @@ Query.prototype.getOptions = function() {
  * - [projection](https://mongoosejs.com/docs/api/query.html#Query.prototype.projection())
  * - sanitizeProjection
  * - useBigInt64
- * - promoteValues
  *
  * The following options are only for all operations **except** `updateOne()`, `updateMany()`, `deleteOne()`, and `deleteMany()`:
  *

lib/schema.js

@@ -1494,6 +1494,8 @@ Schema.prototype.interpretAsType = function(path, obj, options) {
     name = 'ObjectId';
   } else if (type === Types.Decimal128) {
     name = 'Decimal128';
+  } else if (type === Types.Int32) {
+    name = 'Int32';
   } else {
     name = type == null ? '' + type : type.toString();
   }