transpileModule fails when declarationMap is specified

[dragomirtitian]

🔎 Search Terms

transpileModule declarationMap

🕗 Version & Regression Information

• This changed between versions 5.4 and 5.5

⏯ Playground Link

No response

💻 Code

No response

🙁 Actual behavior

When calling transpileModule with options that specify both declaration and declarationMap, transpileModule will force to false declaration but will leave declarationMap as is resulting in the error: error TS5069: Option 'declarationMap' cannot be specified without specifying option 'declaration' or option 'composite'.

🙂 Expected behavior

transpileModule should set both declaration and declarationMap to false (or neither)

Additional information about the issue

No response

[jakebailey]

Technically a dupe of #31991 but it's been a while

[dragomirtitian]

I honestly searched for an existing bug but did not find it :(

It's strange that this is newly impacting us. We did not have an issue before 5.5 RTM.

[jakebailey]

I only found that issue last night because I sorted all issues by least recently modified to find closable/interesting issues 😅

(But searching "transpileModule declarationMap" also worked)

[jakebailey]

It's strange that this is newly impacting us. We did not have an issue before 5.5 RTM.

I'd suspect it was #58261

[dragomirtitian]

It's strange that this is newly impacting us. We did not have an issue before 5.5 RTM.

I'd suspect it was #58261

Yeah probably. I also though so, that's why I searched for newest issues instead of going back to 2019. I was convinced it's a recent regression.

[jakebailey]

My guess would be that it was actually "fixed" a while ago, then re-broken again.