Infer mixed~array<mixed> | array<string> #4425
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VincentLanglet
commented
Oct 10, 2025
| if ($subtractedType instanceof NeverType) { | ||
| if ( | ||
| $subtractedType instanceof NeverType | ||
| || !$subtractedType->isSuperTypeOf($b)->no() |
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This case checks if we "didn't remove" enough
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Looks like it fixes phpstan/phpstan#12930 too |
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Thank you! |
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nice! |
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Closes phpstan/phpstan#13628
Closes phpstan/phpstan#12930
Original bug was
resolved into
mixed~non-empty-array.Same exists with something simpler like
Because it was converted to
mixed ~ (remove(array<mixed, mixed>, array<string>)While it's true that
remove(array<mixed, mixed>, array<string>is a non-empty-array,it's untrue that
array<string>|mixed~array<mixed, mixed>is mixed~non-empty-array.