Type Alias Decrement<N>

Decrement: IsNegative<N> extends true
? never
: BuildTuple<N> extends [infer _, ...(infer Rest)] ? Rest["length"] : never

Utility type to decrement a number by 1

Type Parameters

N extends number
The positive number to decrement. If N is 0, it returns never. If N is a negative number, it returns never.

Returns

The decremented number, or never if N is negative or 0.