feat(cloud_firestore): Create a cloud_firestore_types package that can be used in dart-only contexts

[Rexios80]

Description

I am working on Dart code that gets transpiled to javascript. I'm having issues compiling because my model classes use these types, and thus transitively depend on Flutter.

Prequel to #13216

Related Issues

#13214

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[Rexios80]

Meh I'm not sure this actually improves the state of things

[Rexios80]

Actually I think having these available would help with json serialization

[milyes]

Description

Je travaille sur du code Dart qui est transposé en javascript. J'ai des problèmes de compilation car mes classes de modèle utilisent ces types et dépendent donc de manière transitive de Flutter.

Préquelle de #13216

Questions connexes

#13214

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Changement radical

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[Rexios80]

I would like to include DocumentReference in this package as well since that can be in model classes, but that class seems to be more complex. Would making a base class maybe work?

[Lyokone]

Hello @Rexios80, I'm not sure it will be used by other people and thus might not be useful to include it directly in the main FlutterFire repository. Would using a fork directly on your side be easier?

[Rexios80]

@Lyokone If cloud_firestore doesn't use the types from this package then it might as well not exist. I plan on using these in my own published packages, so it needs to be published as well. I'm working on firebase_js_interop which allows you to write Firebase Cloud Functions in Dart. I hope that would be a popular enough use-case to warrant this change. This isn't the first time I've run into this issue, but last time I found a workaround. Having a cloud_firestore_types package would allow me to remove the workaround package firebase_rules_convert.

I need to be able to create json converters from the cloud_firestore types to the js_interop types, but I can't do that since cloud_firestore depends on flutter.

[Rexios80]

@Lyokone Do you need anything from me on this?