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Dec 3, 2025
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Update changelogs from fern repo #2495

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12 changes: 12 additions & 0 deletions fern/products/cli-api-reference/cli-changelog/2025-12-03.mdx
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## 3.0.0
**`(break):`** **Breaking Change**: Enable `smart-casing` by default for all generators.

Smart-casing improves naming conventions in generated SDKs by:
- Capitalizing common initialisms like API, HTTP, ID, UUID, URL, HTML, JSON, XML, etc. in camelCase and PascalCase identifiers
- Better handling of number-letter combinations (e.g., `v2` stays as `v2` instead of becoming `v_2`, `md5` stays as `md5` instead of `md_5`)

**Migration Behavior**: The CLI will automatically upgrade your `generators.yml` to explicitly set `smart-casing: false` for all existing generators that don't have it configured. This preserves backwards compatibility for existing projects while enabling the improved naming for new projects.

**Opting In**: To enable smart-casing for existing generators, remove the `smart-casing: false` line that the migration adds, or explicitly set `smart-casing: true`.


## 2.18.1
**`(fix):`** Improve enum validation error messages to show which enum value has an invalid name. When the API source is OpenAPI, the error message now includes guidance about using the `x-fern-enum` extension to specify valid names.

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