isaacscript-common/dist/types/Increment.d.ts

Helper functions and features for IsaacScript mods.

/**
 * Helper type to add one to a number type.
 *
 * From: https://stackoverflow.com/questions/54243431/typescript-increment-number-type
 */
export type Increment<N extends number> = [...Arr<N>, unknown]["length"] & number;
type Arr<N extends number, T extends unknown[] = []> = T["length"] extends N ? T : Arr<N, [...T, unknown]>;
export {};
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