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fern-support merged 1 commit into from
Mar 17, 2026
Merged

Update changelogs from fern repo #4315

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7 changes: 7 additions & 0 deletions fern/products/sdks/overview/typescript/changelog/2026-03-16.mdx
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## 3.57.2
**`(fix):`** Fix map types with unknown/any value types to not include spurious `| undefined`.
Previously, `map<string, UnknownType>` generated `Record<string, UnknownType | undefined>`
instead of `Record<string, UnknownType>`. The `| undefined` is now correctly omitted
from map value types.


## 3.57.1
**`(fix):`** Fix passthrough `fetch()` method producing 404s when the SDK environment is an
object (e.g. `{ base: string; production: string }`) instead of a plain string URL.
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