Sourced from mongoose's releases.

8.18.3 / 2025-09-29

• fix(update): avoid throwing error if update has a top-level $addToSet with no path #15648 #15642
• types(query): allow passing arbitrary options #15644 #15643
• docs(connection+mongoose): correct mongodb option name user -> username #15650 #15647
• test: add tests covering vector search and text search using Atlas CLI #15649 #15645

8.18.2 / 2025-09-22

• fix(document): prevent $clone() from converting mongoose arrays into vanilla arrays #15633 #15625
• fix(connection): use correct collection name for model when using useConnection() #15637
• fix(connection): propagate changes to _lastHeartbeatAt to useDb() child connections #15640 #15635
• types: fix schema property type definition in SchemaType #15631

8.18.1 / 2025-09-08

• types: correct type inference for maps of maps #15602
• types(model): copy base model statics onto discriminator model #15623 #15600
• types: fix types for a string of enums #15605 ruiaraujo
• types(SchemaOptions): disallow versionKey: true, which fails at runtime #15606
• docs(typescript): add example explaining how to use query helper overrides for handling lean() #15622 #15601
• docs(transactions): add note about nested transactions #15624

8.18.0 / 2025-08-22

• feat(schema): support for union types #15574 #10894
• fix: trim long strings in minLength and maxLength error messages and display the string length #15571 #15550
• types(connection+collection): make BaseCollection and BaseConnection usable as values #15575 #15548
• types: remove logic that omits timestamps when virtuals, methods, etc. options set #15577 #12807

8.17.2 / 2025-08-18

• fix: avoid Model.validate() hanging when all paths fail casting #15580 #15579 piotracalski
• types(document): better support for flattenObjectIds and versionKey options for toObject() and toJSON() #15582 #15578
• docs: fix docs jsdoc tags and add UUID to be listed #15585
• docs(document): fix code sample that errors with "Cannot set properties of undefined" #15589

Sourced from mongoose's changelog.

8.18.3 / 2025-09-29

• fix(update): avoid throwing error if update has a top-level $addToSet with no path #15648 #15642
• types(query): allow passing arbitrary options #15644 #15643
• docs(connection+mongoose): correct mongodb option name user -> username #15650 #15647
• test: add tests covering vector search and text search using Atlas CLI #15649 #15645

8.18.2 / 2025-09-22

• fix(document): prevent $clone() from converting mongoose arrays into vanilla arrays #15633 #15625
• fix(connection): use correct collection name for model when using useConnection() #15637
• fix(connection): propagate changes to _lastHeartbeatAt to useDb() child connections #15640 #15635
• types: fix schema property type definition in SchemaType #15631

8.18.1 / 2025-09-08

• types: correct type inference for maps of maps #15602
• types(model): copy base model statics onto discriminator model #15623 #15600
• types: fix types for a string of enums #15605 ruiaraujo
• types(SchemaOptions): disallow versionKey: true, which fails at runtime #15606
• docs(typescript): add example explaining how to use query helper overrides for handling lean() #15622 #15601
• docs(transactions): add note about nested transactions #15624

8.18.0 / 2025-08-22

• feat(schema): support for union types #15574 #10894
• fix: trim long strings in minLength and maxLength error messages and display the string length #15571 #15550
• types(connection+collection): make BaseCollection and BaseConnection usable as values #15575 #15548
• types: remove logic that omits timestamps when virtuals, methods, etc. options set #15577 #12807

8.17.2 / 2025-08-18

• fix: avoid Model.validate() hanging when all paths fail casting #15580 #15579 piotracalski
• types(document): better support for flattenObjectIds and versionKey options for toObject() and toJSON() #15582 #15578
• docs: fix docs jsdoc tags and add UUID to be listed #15585
• docs(document): fix code sample that errors with "Cannot set properties of undefined" #15589

• 700c05b chore: release 8.18.3
• 43388c9 Merge pull request #15650 from Automattic/vkarpov15/gh-15647
• 6f78831 Merge pull request #15649 from Automattic/vkarpov15/gh-15645
• 7320d43 docs(connection+mongoose): correct mongodb option name user -> username
• 25210e3 Merge pull request #15648 from Automattic/vkarpov15/gh-15642
• c0a858a Revert "Update test/model.updateOne.test.js"
• 25701d0 Update test/model.updateOne.test.js
• 897300b fix tests
• 9edf082 fix CI tests
• d7bdede test: tests refactor to ensure search indexes get cleaned up
• Additional commits viewable in compare view

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