Is there a syntax to merge multiple two array in the PHPdoc

[VincentLanglet]

I was looking for something like https://phpstan.org/r/70a19ee1-f8f7-49e5-a0c5-638b27aee363
Does PHPStan have a syntax to handle a type declaration like this ?

The idea would be to refactor different custom types when they have a lot in common.

[ondrejmirtes]

There isn't, but you can build it for yourself: https://phpstan.org/developing-extensions/custom-phpdoc-types

[VincentLanglet]

Thanks.

Do you think the syntax array{...Foo, otherKey: string} is possible or I should go for something similar to Pick like

Merge<Foo, array{otherKey: string}>

[ondrejmirtes]

It's not possible because it'd be a phpdoc-parser parse error. I'd recommend to us something with -, like merge-arrays<Foo, array{otherKey: string}>, to avoid conflict with class Merge {}.

[KevinArtus]

@VincentLanglet Did you solved your problem ?
If yes, could you share your solution please ?

[lipemat]

I created a \Union custom type a while back which you may find useful.
https://github.com/lipemat/phpstan-wordpress/blob/master/src/Services/TypeNodeResolver/Union.php

Documentation is here.
https://github.com/lipemat/phpstan-wordpress/tree/45487b81e3d841208618e6cef84bd208695839b2?tab=readme-ov-file#uniont-u-x
Once ported to your project, you'll need to add the service to your .neon file like so.

services:
 - class: \Lipe\Lib\Phpstan\Services\TypeNodeResolver\Union
    tags:
      - phpstan.phpDoc.typeNodeResolverExtension

You can see how it was done here.
https://github.com/lipemat/phpstan-wordpress/blob/45487b81e3d841208618e6cef84bd208695839b2/extension.neon#L23-L25