# TypeORM 0.3.27

- Product: TypeORM (https://whatsnew.fyi/product/typeorm)
- Vendor: TypeORM
- Date: 2025-09-19
- Version: 0.3.27
- Original notes: https://github.com/typeorm/typeorm/releases/tag/0.3.27
- Permalink: https://whatsnew.fyi/product/typeorm/releases/0.3.27

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

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- **changed** — Cache package.json location between getNearestPackageJson invocations
- **added** — Allow VirtualColumns to be initially non-selectable
- **fixed** — Add package.json exports for react-native
- **fixed** — Don't use lazy count when offset exceeds total in getManyAndCount
- **security** — Bump sha.js from 2.4.11 to 2.4.12 to fix CVE-2025-9288
- **added** — Improve JSDoc types in generated migration templates
- **added** — Add support for MySQL 9 and MariaDB 12
- **added** — Add new undefined and null behavior flags
- **added** — Support vector and halfvec data types for PostgreSQL
- **fixed** — Fix JSON parsing for mysql2 client library
- **changed** — Revert fix from 0.3.26 that created junction table metadata when it already exists due to regression

Note: This release reverts a fix from 0.3.26 (#11114) because it introduced a regression in certain cases. 

Once a fix can be provided which does not have this regression, it will be released in a future patch.

##### What's Changed
* perf: Cache package.json location between getNearestPackageJson invocations by @rutkowskib in https://github.com/typeorm/typeorm/pull/11580
* feat: allow `VirtualColumn`s to be initially non-selectable by @alumni in https://github.com/typeorm/typeorm/pull/11586
* build(deps): bump sha.js from 2.4.11 to 2.4.12 in /sample/playground by @dependabot[bot] in https://github.com/typeorm/typeorm/pull/11617
* Add @signalwire/docusaurus-plugin-llms-txt to TypeORM documentation by @Copilot in https://github.com/typeorm/typeorm/pull/11622
* fix: Add package.json exports for react-native by @macksal in https://github.com/typeorm/typeorm/pull/11623
* fix(query-builder): don't use lazy count when offset exceeds total in getManyAndCount by @jeremyteyssedre in https://github.com/typeorm/typeorm/pull/11634
* chore: bump sha.js from 2.4.11 to 2.4.12 (fix security issue: CVE-2025-9288) by @prateek-hegde in https://github.com/typeorm/typeorm/pull/11639
* docs: fix docs for UpdateDateColumn by @madhugb in https://github.com/typeorm/typeorm/pull/11572
* build(deps): bump axios from 1.11.0 to 1.12.1 in /docs by @dependabot[bot] in https://github.com/typeorm/typeorm/pull/11649
* feat(migration): improve JSDoc types in generated migration templates by @gwythyr in https://github.com/typeorm/typeorm/pull/11490
* fix: update tests to reflect migration template changes by @sgarner in https://github.com/typeorm/typeorm/pull/11653
* feat(mysql): add support for MySQL 9 / MariaDB 12 by @alumni in https://github.com/typeorm/typeorm/pull/11575
* ci: add close stale issues GH action by @gioboa in https://github.com/typeorm/typeorm/pull/11651
* feat: add new undefined and null behavior flags by @naorpeled in https://github.com/typeorm/typeorm/pull/11332
* feat(postgres): support vector/halfvec data types by @naorpeled in https://github.com/typeorm/typeorm/pull/11437
* fix: JSON parsing for mysql2 client library (#8319) by @dlhck in https://github.com/typeorm/typeorm/pull/11659
* Revert #11114 do not create junction table metadata when it already exists by @michaelbromley in https://github.com/typeorm/typeorm/pull/11660
* chore: Release v0.3.27 by @michaelbromley in https://github.com/typeorm/typeorm/pull/11661

##### New Contributors
* @Copilot made their first contribution in https://github.com/typeorm/typeorm/pull/11622
* @macksal made their first contribution in https://github.com/typeorm/typeorm/pull/11623
* @jeremyteyssedre made their first contribution in https://github.com/typeorm/typeorm/pull/11634
* @prateek-hegde made their first contribution in https://github.com/typeorm/typeorm/pull/11639
* @madhugb made their first contribution in https://github.com/typeorm/typeorm/pull/11572
* @gwythyr made their first contribution in https://github.com/typeorm/typeorm/pull/11490

**Full Changelog**: https://github.com/typeorm/typeorm/compare/0.3.26...0.3.27