isaacscript-common
Version:
Helper functions and features for IsaacScript mods.
9 lines • 409 B
TypeScript
/**
* Helper type to subtract one from a number type.
*
* From: https://stackoverflow.com/questions/54243431/typescript-increment-number-type
*/
export type Decrement<N extends number> = Arr<N> extends [unknown, ...infer U] ? U["length"] : never;
type Arr<N extends number, T extends unknown[] = []> = T["length"] extends N ? T : Arr<N, [...T, unknown]>;
export {};
//# sourceMappingURL=Decrement.d.ts.map