I liked elms approach where records types meant "has at least these fields with these types"
So for example { x: 1, y: "a string" } can be passed to functions expecting { x: Int }, { y: String }, and { x: Int, y: String }
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So for example { x: 1, y: "a string" } can be passed to functions expecting { x: Int }, { y: String }, and { x: Int, y: String }