Fix Plugin type issue

[mrmckeb]

This is a quick fix to an issue where the types for PluginsConfig don't match those used in plugins like @tailwindcss/container-queries.

This was caught by TypeScript with exactOptionalPropertyTypes enabled, where TypeScript checks if undefined can be supplied as a value for optional types.

I felt that it made more sense to fix this here, as it makes the core types more flexible, as opposed to each plugin needing to fix this when/if they hit it.

[philipp-spiess]

@mrmckeb Thanks for the PR! This change looks reasonable but I’m not sure I understand what current issue this is fixing. I was looking at the @tailwindcss/container-queries plugin you referenced but I don't see it using a config: undefined somewhere 🤔

I’m asking mostly because I see we have a bunch of other optional properties in the types for v3 and I wonder if they all need to be updated or if maybe it's fine the way it is right now.

[mrmckeb]

Hi @philipp-spiess,

No problem, I can add more detail :)

The types for the plugin, as per the DTS file, are:

declare const _default: {
    handler: import("tailwindcss/types/config").PluginCreator;
    config?: Partial<import("tailwindcss/types/config").Config> | undefined;
};
export = _default;

So in this stricter mode of TypeScript, this is flagged as an issue.

I'm not 100% sure where the undefined comes from, but it seems to be from an older version of Tailwind (insiders, from 10+ months ago), but I feel this is a probably still a good fix given that other plugins may have the same types.

[mrmckeb]

Hi @philipp-spiess, any more feedback on this one?

[philipp-spiess]

@mrmckeb Hey! sorry for not getting back earlier. Do you mind adding a changelog entry, something along those lines?

- Ensure the TypeScript types for `PluginsConfig` allow `undefined` values ([#14668](https://github.com/tailwindlabs/tailwindcss/pull/14668))

I'm having some issues pushing to your branch directly 🙈

[mrmckeb]

Sorry @philipp-spiess - I was a little sick last week and this dropped off of my plate.

I've updated the branch and added that entry in.

You do have permission to write to this branch, so I'm not sure why you couldn't sorry!

[philipp-spiess]

@mrmckeb Thanks a ton! Will merge this in but given our current focus on v4, it might take a while before we do a new v3 release unless something urgent needs fixing.