Can this work with Parcel.js to build?

this is my build script, and it does not look like it is using to craco config to build
```

    "build": "parcel build src/index.js --no-source-maps ",

```

P.s. The reason I use this is because I want the build to just consist of 2 files. index.js & index.css. How would I achieve that with craco?