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Enable `noUncheckedSideEffectImports` by default by RyanCavanaugh · Pull Request #62443 · microsoft/TypeScript

added 3 commits

September 12, 2025 10:18

Copilot AI review requested due to automatic review settings

September 12, 2025 17:20

jakebailey

@RyanCavanaugh

jakebailey

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