fredrare
/ NumberRange.ts
Created
December 6, 2024 21:34
Small and simple generic number range implementation in TypeScript
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| type NextDigit = [1, 2, 3, 4, 5, 6, 7, 8, 9] | |
| type Split<Str> = Str extends `${infer Head extends number}${infer Tail}` ? [Head, ...Split<Tail>] : [] | |
| type Increase<X extends number[]> = X extends [...infer Rest extends number[], infer Last extends number] ? | |
| Last extends 9 ? [...Increase<Rest>, 0] : [...Rest, NextDigit[Last]] | |
| : [1] | |
| type TupleToString<T extends number[]> = | |
| T extends [infer First extends number, ...infer Rest extends number[]] |