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Given the following `tsconfig.json`:
```json
{
"compilerOptions": {
"emitDecoratorMetadata": true,
"experimentalDecorators": true
}
}
```
The following will currently causes an import error:
```ts
import { IconName } from '@fortawesome/fontawesome-common-types';
class MyClass {
@MyDecorator
icon: IconName;
}
```
This is because in some situations TypeScript doesn’t know that `IconName` is a
only exists as a type. It will generate an import, which can’t be resolved.
Simply adding an empty JavaScript file, will make the environment able to import
the package, even though the import value of `IconName` will be `undefined`.