Migrate to null safety

[Schwusch]

We will have to support null safety at some point, and this ticket is for tracking that work.

[Schwusch]

At the time of writing, shared_aws_api is listed as the 7:th most blocking package, blocking null safety migration:
https://github.com/dart-lang/sdk/wiki/Null-safety-migration-status

[Schwusch]

As it stands, we have 3 dependencies that are not migrated:

• package:crypto - Publish null-safe version? dart-lang/core#232
• package:http - Migration to null safety dart-lang/http#501
• package:build_runner - Add support for nullsafety dart-lang/build#2920

It seems package:http is close to a migrated release, and package:crypto seems to be migrated but no release.
I don't think package:build_runner needs to be migrated though, since it only runs when generating code?

[IchordeDionysos]

@Schwusch looks like you are now unblocked and should be able to migrate to null safety :)
Also you are now the 2nd most blocking package after dio

[pshichenko]

Any way I can help with this?

[Schwusch]

@pshichenko There is a branch, null_safety, that you are welcome to fork and work on.
I currently have migrated the shared package, and there is some attempts to generate null safe code in the generator.
First step is to try to run the generator and observe the changes.
Feel free to ask questions on Gitter at dart-lang/server if you need quick answers.

[xvrh]

Hi Jonathan, if you are not working on it right now, I may give it a try starting from you branch.

[Schwusch]

I guess we can close this now as the null safe services has been published as 1.0.0 in #324
Better late than never 🦥 🏃
Thanks everyone who helped, @xvrh in particular ❤️