add a Tuple type helper

aniket091 · Apr 5, 2023 · 831d128 · 831d128
1 parent a04c79c
commit 831d128
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Showing 2 changed files with 4 additions and 12 deletions.
diff --git a/types/Base.d.ts b/types/Base.d.ts
@@ -2,6 +2,8 @@ import { ChatInputCommandInteraction, Message } from 'discord.js';
 
 // Helper type
 export type DeepRequired<T> = T extends object ? { [K in keyof T]-?: DeepRequired<T[K]> } : T;
+export type Tuple<N extends number, T> = N extends N ? (number extends N ? T[] : _TupleOf<T, N, []>) : never;
+type _TupleOf<T, N extends number, R extends unknown[]> = R['length'] extends N ? R : _TupleOf<T, N, [T, ...R]>;
 
 export type ButtonStyle = 'PRIMARY' | 'SECONDARY' | 'SUCCESS' | 'DANGER';
 

diff --git a/types/TicTacToe.d.ts b/types/TicTacToe.d.ts
@@ -8,7 +8,7 @@ import {
   User,
 } from 'discord.js';
 import { Approve, ApproveConstructorOptions } from './Approve';
-import { BaseConstructorOptions, ButtonStyle, DeepRequired, MessageType } from './Base';
+import { BaseConstructorOptions, ButtonStyle, DeepRequired, MessageType, Tuple } from './Base';
 
 export type TicTacToeGameCellState = 0 | 1 | 2;
 
@@ -40,17 +40,7 @@ export class TicTacToe<IsSlashGame extends boolean = false> extends Approve {
   options: DeepRequired<ApproveConstructorOptions & TicTacToeConstructorOptions<IsSlashGame>>;
   message: MessageType<IsSlashGame>;
   opponent: User;
-  gameBoard: [
-    TicTacToeGameCellState,
-    TicTacToeGameCellState,
-    TicTacToeGameCellState,
-    TicTacToeGameCellState,
-    TicTacToeGameCellState,
-    TicTacToeGameCellState,
-    TicTacToeGameCellState,
-    TicTacToeGameCellState,
-    TicTacToeGameCellState
-  ];
+  gameBoard: Tuple<9, TicTacToeGameCellState>;
   player1Turn: boolean;
 
   on(