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How to Fix "Cannot Find Module or Type Declarations for Side-Effect Import" in TypeScript
Learn how to fix the TypeScript TS2882 error for CSS imports, understand noUncheckedSideEffectImports, and use declare module '*.css' in Next.js.
With:
declare module '*.css' {}new CSS imports don't require additional TypeScript declarations.
2. It Works Well With Frontend Asset Imports
CSS isn't the only type of static asset commonly imported into frontend applications.
Depending on your framework and configuration, you may also encounter declarations such as:
declare module '*.png' {}
declare module '*.jpg' {}
declare module '*.svg' {}Using a wildcard for CSS follows the same general approach.
3. Your Bundler Still Provides Runtime Validation
The wildcard declaration doesn't make invalid imports work.
For example:
import 'mapbox-gl/dist/does-not-exist.css'Share:
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