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webstrand/gist:0a7be6a60c01c5e619b49fa430203aa6

Created February 12, 2019 16:37
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Typescript: An array of keys of some object extending some type.
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gistfile1.txt
type KeyofSubset<T, U> = Array<({ [P in keyof T]: T[P] extends U ? P : never })[keyof T]>;
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