Typescript handy types
type ExtractArg<T> = T extends (arg: infer U) => any ? U : T;
type MapTuple<Tuple extends [...any[]]> = {
[Index in keyof Tuple]: ExtractArg<Tuple[Index]>;
};type ExtractArg<T> = T extends (arg: infer U) => any ? U : T;
type MapTuple<Tuple extends [...any[]]> = {
[Index in keyof Tuple]: ExtractArg<Tuple[Index]>;
};
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