Include `null` in return type of `Closure::bindTo()` and `Closure::bind()` dynamic return type extensions#5675

Merged

VincentLanglet merged 8 commits into

phpstan:2.2.xfrom

phpstan-bot:create-pull-request/patch-jnyy0bk

Jun 13, 2026

Commits on Jun 12, 2026

Include `null` in return type of `Closure::bindTo()` and `Closure::bind()` dynamic return type extensions

VincentLanglet
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staabm
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Use BenevolentUnionType for Closure::bindTo() and Closure::bind() return types

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staabm
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Exclude null from Closure::bindTo()/bind() return type when $newThis is null

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staabm
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Track static-ness of closures in ClosureType to exclude null from bindTo()/bind() return type

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staabm
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Update closure binding test expectations for static-closure null tracking

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staabm
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Restructure Closure::bind()/bindTo() return type: null when static closure binds to object

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staabm
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Return benevolent Closure|null when static-closure $newThis is maybe-null

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staabm
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Add NullCoalesce regression test for nullable Closure::bindTo() result

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staabm
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