onExtract argument expect getExtracted call result but get getExtracted function

index.d.ts
```typescript
type onExtract = (asset: Readonly<{
code: any;
map: any;
codeFileName: string;
mapFileName: string;
}>) => boolean;
```

index.js
```javascript
if (options.onExtract) {
const shouldExtract = yield options.onExtract(getExtracted);

if (shouldExtract === false) {
return;
}
}
``