Initial code

src/store/index.ts

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+export * from "./store.js";
+export * from "./types.js";

src/store/store.ts

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+import config from "../config.json" with { type: "json" };
+
+import { existsSync, readFileSync, writeFileSync } from "fs";
+
+import type { IState } from "./types.js";
+
+let state: IState = {
+    users: [],
+};
+
+const load = () => {
+    if (!existsSync(config.storePath)) {
+        return;
+    }
+
+    const json = readFileSync(config.storePath).toString();
+    state = JSON.parse(json) as IState;
+};
+
+const save = () => {
+    const json = JSON.stringify(state);
+    writeFileSync(config.storePath, json);
+};
+
+export { state, load, save };

src/store/types.ts

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+interface IState {
+    users: IUser[];
+}
+
+interface IUser {
+    id: string;
+    role: TRole;
+    experience: number;
+    lastMessageTimestamp: number;
+}
+
+type TRole = "NONE" | "USER" | "MODERATOR" | "ADMIN";
+
+export { type IState, type IUser, type TRole };