move game state and head interfaces into shared file

src/interfaces.ts

@@ -2,3 +2,27 @@ export interface IPosition {
 	ply: number;
 	fen: string;
 }
+
+export interface IHeader {
+	event: string;
+	site: string;
+	date: string;
+	round: string;
+	white: string;
+	black: string;
+	result: string;
+	eco: string;
+	whiteElo: string;
+	blackElo: string;
+	plyCount: string;
+	eventDate: string;
+	source: string;
+	[key: string]: string;
+}
+
+export interface IGameState {
+	pgn: string;
+	headers: IHeader;
+	diagrams: IPosition[];
+	diagramClock: boolean;
+}

src/reducers/gameReducer.ts

@@ -1,28 +1,4 @@
-import type { IPosition } from "#/interfaces.ts";
-
-export interface IHeader {
-	event: string;
-	site: string;
-	date: string;
-	round: string;
-	white: string;
-	black: string;
-	result: string;
-	eco: string;
-	whiteElo: string;
-	blackElo: string;
-	plyCount: string;
-	eventDate: string;
-	source: string;
-	[key: string]: string;
-}
-
-export interface IGameState {
-	pgn: string;
-	headers: IHeader;
-	diagrams: IPosition[];
-	diagramClock: boolean;
-}
+import type { IGameState, IHeader, IPosition } from "#/interfaces.ts";
 
 type GameAction =
 	| { type: "SET_GAME"; payload: { pgn: string; headers: IHeader } }

src/utils/pgnUtils.ts

@@ -1,4 +1,4 @@
-import type { IGameState } from "#/reducers/gameReducer.ts";
+import type { IGameState } from "#/interfaces.ts";
 
 export const getHeaders = (pgn: string) => {
 	const pgnHeader = pgn.split(/\n\n/g)[0];