Enable noUncheckedSideEffectImports by default#2864
Merged
jakebailey merged 6 commits intomicrosoft:mainfrom Feb 21, 2026
Merged
Enable noUncheckedSideEffectImports by default#2864jakebailey merged 6 commits intomicrosoft:mainfrom
noUncheckedSideEffectImports by default#2864jakebailey merged 6 commits intomicrosoft:mainfrom
Conversation
jakebailey
reviewed
Feb 20, 2026
jakebailey
reviewed
Feb 20, 2026
jakebailey
approved these changes
Feb 21, 2026
jakebailey
approved these changes
Feb 21, 2026
|
This breaks .scss imports even when you have fake modules for them. |
Member
|
Please file an issue with a repro. That should not be the case https://devblogs.microsoft.com/typescript/announcing-typescript-5-6/#the---nouncheckedsideeffectimports-option |
|
I can confirm this breaks css imports |
Contributor
Author
|
Please open a new issue with the repro steps included. Ideally, one that would showcase the difference between |
Robot-Inventor
added a commit
to Robot-Inventor/tsconfig-base
that referenced
this pull request
Feb 24, 2026
the latest TypeScript changes Previously, `noUncheckedSideEffectImports` was disabled by default in TypeScript, but it has recently been enabled by default. Since this option can break existing projects that use CSS Modules, this commit explicitly disables it to maintain the previous behavior. Ref: - microsoft/TypeScript#62443 - microsoft/typescript-go#2864
Robot-Inventor
added a commit
to Robot-Inventor/tsconfig-base
that referenced
this pull request
Feb 24, 2026
#77) the latest TypeScript changes Previously, `noUncheckedSideEffectImports` was disabled by default in TypeScript, but it has recently been enabled by default. Since this option can break existing projects that use CSS Modules, this commit explicitly disables it to maintain the previous behavior. Ref: - microsoft/TypeScript#62443 - microsoft/typescript-go#2864
|
@Andarist @jakebailey I filed the issue with a repro sandbox #2912 |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
4 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
ports microsoft/TypeScript#62443