ready for review

docs/source/api.js

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

lib/browser.js

@@ -50,6 +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
  *
  * Using this exposed access to the `ObjectId` type, we can construct ids on demand.
  *

lib/cast/int32.js

@@ -25,11 +25,11 @@ module.exports = function castInt32(val) {
     const INT32_MAX = 0x7FFFFFFF;
     const INT32_MIN = -0x80000000;
 
-    let _val = Number(val);
+    const _val = Number(val);
 
     if (!isNaN(_val) && _val === Math.round(_val) && _val > INT32_MIN && _val < INT32_MAX) {
       return _val;
     }
     assert.ok(false);
   }
-};
+};

lib/mongoose.js

@@ -987,6 +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
  *
  * Using this exposed access to the `ObjectId` type, we can construct ids on demand.
  *
@@ -1138,6 +1139,22 @@ Mongoose.prototype.syncIndexes = function(options) {
 
 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.
+ * Do not use this to create a new Int32 instance, use `mongoose.Types.Int32`
+ * instead.
+ *
+ * #### Example:
+ *
+ *     const vehicleSchema = new Schema({ numberOfCows: mongoose.Int32 });
+ *
+ * @property Decimal128
+ * @api public
+ */
+Mongoose.prototype.Int32 = SchemaTypes.Int32;
+
 /**
  * The Mongoose Mixed [SchemaType](https://mongoosejs.com/docs/schematypes.html). Used for
  * declaring paths in your schema that Mongoose's change tracking, casting,

lib/query.js

@@ -1634,6 +1634,7 @@ 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

@@ -2848,6 +2848,7 @@ module.exports = exports = Schema;
  * - [Mixed](https://mongoosejs.com/docs/schematypes.html#mixed)
  * - [UUID](https://mongoosejs.com/docs/schematypes.html#uuid)
  * - [BigInt](https://mongoosejs.com/docs/schematypes.html#bigint)
+ * - Int32
  *
  * Using this exposed access to the `Mixed` SchemaType, we can use them in our schema.
  *

lib/schema/bigint.js

@@ -23,7 +23,7 @@ function SchemaBigInt(path, options) {
 
 /**
  * This schema type's name, to defend against minifiers that mangle
- * fun
+ * function names.
  *
  * @api public
  */

lib/schema/int32.js

@@ -63,7 +63,6 @@ SchemaInt32.setters = [];
 /**
  * Attaches a getter for all Int32 instances
  *
- *
  * @param {Function} getter
  * @return {this}
  * @function get
@@ -76,7 +75,6 @@ SchemaInt32.get = SchemaType.get;
 /**
  * Get/set the function used to cast arbitrary values to booleans.
  *
- *
  * @param {Function} caster
  * @return {Function}
  * @function get
@@ -226,4 +224,4 @@ SchemaInt32.prototype._castNullish = function _castNullish(v) {
  * Module exports.
  */
 
-module.exports = SchemaInt32;
+module.exports = SchemaInt32;

test/bigint.test.js

@@ -39,7 +39,7 @@ describe('BigInt', function() {
     assert.strictEqual(doc.bigint2, 997n);
   });
 
-  it.only('handles cast errors', async function() {
+  it('handles cast errors', async function() {
     const schema = new Schema({
       bigint: 'BigInt'
     });