Autocompletion support for useSelect (via jsDoc annotations)#41596
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Autocompletion support for useSelect (via jsDoc annotations)#41596
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Edit: This was a super long comment exploring different ways to infer argument types in jsDoc. Turns out I was sent down the wrong path, so I moved it all to a gist. My IDE picked up the DefinitelyTyped types from the following directory and refused to cooperate:
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I ironed out all the kinks in this PR:
It's ready for a review! |
This was referenced Jun 10, 2022
dmsnell
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Jun 14, 2022
| ...args: infer P | ||
| ) => infer R | ||
| ? ( ...args: P ) => R | ||
| : F; |
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what was the issue with this inference? is it that we lose the generic type parameters through this inference? so if we had const get<T> = (state, id): T => state[id]; that it widens to any?
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More or less:
type BadlyInferredSignature = CurriedState<
<K extends string | number>(
state: any,
kind: K,
key: K extends string ? 'one value' : false
) => K
>
// BadlyInferredSignature evaluates to:
// (kind: string number, key: false | "one value") => string number
The only solution I found is quite convoluted so I went for shipping the simple Curry type in this PR. We can always ship an updated version in a follow-up PR.
dmsnell
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Jun 14, 2022
| _Returns_ | ||
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| - `Function`: A custom react hook. | ||
| - `UseSelectReturn<T>`: A custom react hook. |
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unfortunately until we get hyperlinked or better-resolved types I feel like this is just as useless as Function before it. not a knock against this PR - nothing I think we can do about it now. maybe it's a little better since you can search for UseSelectReturn in the code…
dmsnell
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Jun 14, 2022
dmsnell
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Jun 14, 2022
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@dmsnell I just addressed your feedback! @sarayourfriend would you also like to take a look at this one? |
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Hi Adam, sorry for the delay. I've been traveling and have been overwhelmed with other work. I am taking a look at this today. |
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Added the Needs Dev Note label in case this needs a dev note (either individual or as part of a "misc" dev note) for WP 6.1 release. |
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What?
This PR adds TypeScript type definitions to
useSelectvia jsDoc annotations. Effectively, it give us autocompletion support:CleanShot.2022-06-09.at.16.36.16.mp4
It's a step towards #39081, only it focuses just on
useSelectImporting caveat
Using the annotations in the same file where they're defined works flawlessly. However, after importing useSelect in another file, autocompletion doesn't work correctly. I believe it's because DefinitelyTyped definition get in the way. Once I removed (from
~/Library/Caches/typescript/4.8/node_modules/@types/wordpress__data/index.d.ts), the return value ofcreateReduxStorebecame simplyany:To confirm that hypothesis, I set up a separate repository with clean slate and no Lerna packages. Suddenly, all the annotations worked flawlessly when imported. I would like to make it work across Gutenberg packages but let's explore that in follow-up PR.
Test plan
Open the
test_jsdoc.jsfile shipped with this PR and confirm autocompletion behaves like on the screencast above. Of course, this file needs to be removed before this PR is merged.IDE tests:
✅ I tried it in VisualStudio code, where it worked perfectly
✅
I then tried it in PHPStorm, and it didn't work at allAfter updating PHPStorm and its configuration, everything worked perfectly just like in VSCode.Other considerations
I went through the following resources which I'm documenting here for posterity:
CC @dmsnell @sarayourfriend @sirreal @jsnajdr