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Add roles declarations to forbid unsafe coercions #120

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Merged
merged 1 commit into from
Dec 12, 2020
Merged

Add roles declarations to forbid unsafe coercions #120

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2 changes: 2 additions & 0 deletions src/CSS/Property.purs
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Original file line number Diff line number Diff line change
Expand Up @@ -40,6 +40,8 @@ quote s = "\"" <> s <> "\""
newtype Key :: Type -> Type
newtype Key a = Key Prefixed

type role Key representational

derive instance eqKey :: (Eq a) => Eq (Key a)
derive instance ordKey :: (Ord a) => Ord (Key a)

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4 changes: 4 additions & 0 deletions src/CSS/Size.purs
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Expand Up @@ -9,6 +9,8 @@ import CSS.String (class IsString, fromString)
newtype Size :: Type -> Type
newtype Size a = Size Value

type role Size nominal

derive instance eqSize :: Eq a => Eq (Size a)
derive instance ordSize :: Ord a => Ord (Size a)

Expand Down Expand Up @@ -81,6 +83,8 @@ data Rad
newtype Angle :: Type -> Type
newtype Angle a = Angle Value

type role Angle nominal

derive instance eqAngle :: Eq a => Eq (Angle a)
derive instance ordAngle :: Ord a => Ord (Angle a)

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