Sourced from mongoose's releases.

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.

8.18.2 / 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

• 603b287 chore: release 8.18.2
• 5c7114e Merge pull request #15640 from Automattic/vkarpov15/gh-15635
• 219ed6e Merge pull request #15637 from Automattic/vkarpov15/gh-15629
• 5f77af5 fix lint
• c40ccdf fix(connection): propagate changes to _lastHeartbeatAt to useDb() child con...
• 97f137d fix(connection): use correct collection name for model when using `useConnect...
• 907bd68 Merge pull request #15636 from Automattic/vkarpov15/gh-15626
• b6eb099 Merge pull request #15633 from Automattic/vkarpov15/gh-15625
• 8a2b2cf Merge pull request #15631 from sderrow/fix-schema-prop-type-desc-in-schematype
• beaff5b fix lint
• Additional commits viewable in compare view

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