_AllExtend

type _AllExtend<TArray extends UnknownArray, Type, Options extends Required<AllExtendOptions>> = IfNotAnyOrNever<TArray, TArray extends readonly [infer First, ...infer Rest] ? IsNever<First> extends true ? Or<Or<IsNever<Type>, IsAny<Type>>, Not<Options['strictNever']>> extends true // If target `Type` is also `never`, or is `any`, or `strictNever` is disabled, recurse further. ? _AllExtend<Rest, Type, Options> : false : First extends Type ? _AllExtend<Rest, Type, Options> : false : true, false, false>

type _AllExtend<TArray extends UnknownArray, Type, Options extends Required<AllExtendOptions>> = IfNotAnyOrNever<TArray, TArray extends readonly [infer First, ...infer Rest] ? IsNever<First> extends true ? Or<Or<IsNever<Type>, IsAny<Type>>, Not<Options['strictNever']>> extends true // If target `Type` is also `never`, or is `any`, or `strictNever` is disabled, recurse further. ? _AllExtend<Rest, Type, Options> : false : First extends Type ? _AllExtend<Rest, Type, Options> : false : true, false, false>