Enable noUncheckedSideEffectImports by default - #2864
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Jake Bailey (jakebailey) merged 6 commits intoFeb 21, 2026
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Mateusz Burzyński (Andarist)
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Jake Bailey (jakebailey)
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This breaks .scss imports even when you have fake modules for them. |
Member
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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 |
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I can confirm this breaks css imports |
Contributor
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Please open a new issue with the repro steps included. Ideally, one that would showcase the difference between |
roboin (Robot-Inventor)
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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
roboin (Robot-Inventor)
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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
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Mateusz Burzyński (@Andarist) Jake Bailey (@jakebailey) I filed the issue with a repro sandbox #2912 |
Jake Bailey (jakebailey)
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Aug 13, 2026
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ports microsoft/TypeScript#62443