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TypeScript branded types
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Mike Austin
Feb 13, 2025, 3:24:51 PMFeb 13
to PiLuD
type uuid = string & { __type: "uuid"; };
function uuid(value: string): uuid {
if (!(...).test(value)) {
throw Error("Not a valid UUID");
}
return value as uuid;
}
if (!(...).test(value)) {
throw Error("Not a valid UUID");
}
return value as uuid;
}
Now strings are not compatible with uuids. I had a feeling TypeScript could do it.
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