Convert a string literal to a number, which behaves like Number.parseInt.
/* _____________ Your Code Here _____________ */
type ToNumber<S extends string, ACC extends unknown[] = []> = S extends `${number}`
? S extends `${ACC['length']}`
? ACC['length']
: ToNumber<S, [...ACC, unknown]>
: never
/* _____________ Test Cases _____________ */
import type { Equal, Expect } from '@type-challenges/utils'
type cases = [
Expect<Equal<ToNumber<'0'>, 0>>,
Expect<Equal<ToNumber<'5'>, 5>>,
Expect<Equal<ToNumber<'12'>, 12>>,
Expect<Equal<ToNumber<'27'>, 27>>,
Expect<Equal<ToNumber<'18@7_$%'>, never>>,
]标签：ACC,Typescript,_____________,Number,number,Expect,102,type From： https://www.cnblogs.com/Answer1215/p/16891093.html