Add deprecation warnings for v7 flags in v6

[brophdawg11]

• Add deprecation warnings for v7 future flags in v6
• Add @deprecated annotations to json/defer

[changeset-bot]

🦋 Changeset detected

Latest commit: 3bcaf77

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 5 packages

Name	Type
react-router-dom	Minor
react-router	Minor
@remix-run/router	Minor
react-router-dom-v5-compat	Minor
react-router-native	Minor

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[github-actions]

🤖 Hello there,

We just published version 6.28.0-pre.0 which includes this pull request. If you'd like to take it for a test run please try it out and let us know what you think!

Thanks!

[github-actions]

🤖 Hello there,

We just published version 6.28.0 which includes this pull request. If you'd like to take it for a test run please try it out and let us know what you think!

Thanks!

[li-jia-nan]

How do I turn off these warnings ?

[pterblgh]

Hey team, our CI is full of these log lines. What's the recommended approach to disable them? Most packages usually give package consumers and environment variable to turn off logging.

These lines are logged 498 times for our repo, probably unnecessarily:

What is your recommendation?

[jkakar]

How should code like return json({ error: "some error" }, { status: 400 }); be handled in the new world?

[adriandmitroca]

Shouldn't these deprecation warnings happen only in non-production environment?

[github-actions]

🤖 Hello there,

We just published version 7.0.0 which includes this pull request. If you'd like to take it for a test run please try it out and let us know what you think!

Thanks!

[brophdawg11]

We're going to allow you to disable these warnings by setting the flags to false in a 6.28.1 release soon: #12441

[github-actions]

🤖 Hello there,

We just published version 6.28.1-pre.0 which includes this pull request. If you'd like to take it for a test run please try it out and let us know what you think!

Thanks!

[github-actions]

🤖 Hello there,

We just published version 6.28.1 which includes this pull request. If you'd like to take it for a test run please try it out and let us know what you think!

Thanks!

[github-actions]

🤖 Hello there,

We just published version 6.28.2-pre.0 which includes this pull request. If you'd like to take it for a test run please try it out and let us know what you think!

Thanks!