RFC: Negation types #29
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aatxe
reviewed
May 8, 2024
aatxe
reviewed
May 8, 2024
aatxe
reviewed
May 8, 2024
Co-authored-by: aaron <aaronweiss@roblox.com>
Co-authored-by: aaron <aaronweiss@roblox.com>
aatxe
reviewed
May 8, 2024
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| We can use type families to have this guarantee. Add a `negate<T>` type family which would be internal to the type inference engine, and have the syntax `~T` produce that type family, not a `NegationType`. | ||
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| As for the type error, we can just consider `negate<{ p: P }>` to be an uninhabited type family, and resolve that as an error type. |
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I think this is very sensible, and aligned with where future proposals will go too (e.g. type indexing syntax like SomeTableType.SomeProperty will probably want to resolve to index<SomeTableType, SomeProperty>). Seems like the right call to me.
alexmccord
commented
Oct 28, 2024
Co-authored-by: Alexander McCord <11488393+alexmccord@users.noreply.github.com>
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