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651 - Length of String 2 #24448

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NeylonR opened this issue Mar 3, 2023 · 0 comments

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NeylonR commented Mar 3, 2023

type LengthOfString<S extends string, Acc extends string[] = []> = S extends `${infer First}${infer Rest}`
? LengthOfString<Rest, [...Acc, First]>
: Acc['length']

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