behind the scenes: what are these all caps react imports?

Table of contents

• what the tags are
  • why are the tags named this
  • the tag names
  • what even is that tag
• why to never use tags that look like this
  • what happens when you import these internal constants
• notes
• clarification

what the tags are

The tags with these names are internal react imports.

why are the tags named this

They are named this because its a deterant name even tho you dont get fired for importing this.

the tag names

• DO_NOT_USE_OR_YOU_WILL_BE_FIRED_CALLBACK_REF_RETURN_VALUES
• And alot more

what even is that tag

I know this sounds really weird:

• DO_NOT_USE_OR_YOU_WILL_BE_FIRED_CALLBACK_REF_RETURN_VALUES

Even tho it sounds weird this is acutualy reacts internal constant.

That tag is a ref cleanup.

This is also what react treats as a cleanup function.

why to never use tags that look like this

Tags that start with DO_NOT_USE_OR_YOU_WILL_BE_FIRED or DO_NOT_USE are never meant to be imported.

what happens when you import these internal constants

On minor updates, your app will break.

React does not gurantee its existence or behaviour.

This is also not recommended because its behaviour is unknown because react devs dont usualy import these tags.

notes

I really think you should not use this.

If you do please stop.

You are not meant to use react internals.

If you do use this your app will break.

clarification

In this post, tag or tags = a named import