webpack-obfuscator not working on Firebase deployment

## Expected Behavior
`webpack-obfuscator` and `javacript-obfuscator` should be working on Firebase deployment without issue

## Current Behavior
My firebase functions are deployed correctly unless I import `webpack-obfuscator` or `javacript-obfuscator`
Always produce error
```
Did you list all required modules in the package.json dependencies?
Detailed stack trace: Error: Cannot find module 'webpack-obfuscator'
```

| | webpack-obfuscator | javacript-obfuscator |
|--|----------------|----------|
| sample code | | |
| error | | |

## Steps to Reproduce
- Install `webpack-obfuscator`
- Run `firebase emulators:start` to test the function, it working properly
- Run `firebase deploy` the functions can not be deployed

## Enviroment
- Node 14
- "webpack-obfuscator": "3.5.1",
- "javascript-obfuscator": "4.0.2"

## Reference
I have taken a look at these issues, but either they are outdated or not work
- https://github.com/javascript-obfuscator/javascript-obfuscator/issues/687
- https://github.com/javascript-obfuscator/webpack-obfuscator/issues/138
- https://github.com/javascript-obfuscator/webpack-obfuscator/issues/82#issue-667058896

cc: @sanex3339 since you found a bug in [loader](https://github.com/javascript-obfuscator/javascript-obfuscator/issues/687#issuecomment-665271638) ( but it was 3 years ago )

Comienza con las dependencias de package.json y la configuración de despliegue de Firebase Functions utilizada por la reproducción; compara la ruta funcional de firebase emulators:start con firebase deploy. Verifica que los paquetes del ofuscador estén disponibles en la función desplegada, usando el error reportado Cannot find module como comprobación de finalización.

Escrito por el modelo de indexación a partir del texto del issue.