chore(eslintrc.cjs): add ESLint configuration file to the project

fix(rooms.ts): remove unused import and type declaration
fix(mock.ts): change variable declaration from 'let' to 'const' for loop variable
fix(startup.ts): change variable declaration from 'let' to 'const' for userCount
fix(utils.ts): change parameter type from 'BigInt' to 'bigint' in findGroupById function
fix(verifier.ts): remove unused import statement for poseidon1 function

.eslintrc.cjs

@@ -0,0 +1,18 @@
+/* eslint-env node */
+module.exports = {
+  parser: '@typescript-eslint/parser',
+  plugins: ["@typescript-eslint"],
+  overrides: [
+    {
+      files: ['*.ts', '*.tsx'],
+      extends: [
+        'plugin:@typescript-eslint/recommended',
+        'plugin:@typescript-eslint/recommended-requiring-type-checking',
+      ],
+
+      parserOptions: {
+        project: ['./tsconfig.json'], // Specify it only for TypeScript files
+      },
+    },
+  ],
+}

src/config/rooms.ts

@@ -1,4 +1,4 @@
-import type { MembershipI, RoomGroupI, ServerI } from 'discreetly-interfaces';
+import type { RoomGroupI, ServerI } from 'discreetly-interfaces';
 import { genId } from 'discreetly-interfaces';
 import 'dotenv/config';
 

src/mock.ts

@@ -11,7 +11,7 @@ export default function Mock(io: SocketIOServer) {
       this.weightSums = [];
       let sum = 0;
 
-      for (let weight of weights) {
+      for (const weight of weights) {
         sum += weight;
         this.weightSums.push(sum);
       }
@@ -19,7 +19,7 @@ export default function Mock(io: SocketIOServer) {
 
     pick() {
       const rand = Math.random() * this.weightSums[this.weightSums.length - 1];
-      let index = this.weightSums.findIndex((sum) => rand < sum);
+      const index = this.weightSums.findIndex((sum) => rand < sum);
       return this.values[index]();
     }
   }

src/startup.ts

@@ -49,7 +49,7 @@ export async function initRedisVariables(redisClient: RedisClientType): Promise<
 }
 
 export function initSockets(io: SocketIOServer, loadedRooms: RoomGroupI[]) {
-  let userCount: userCountI = {};
+  const userCount: userCountI = {};
   io.on('connection', (socket: Socket) => {
     pp('SocketIO: a user connected', 'debug');
 

src/utils.ts

@@ -22,7 +22,7 @@ export function findRoomById(
   return undefined;
 }
 
-export function findGroupById(roomGroups: RoomGroupI[], groupId: BigInt): RoomGroupI {
+export function findGroupById(roomGroups: RoomGroupI[], groupId: bigint): RoomGroupI {
   const group = roomGroups.find((group) => group.id === groupId);
   console.log(roomGroups, groupId);
   if (!group) {
@@ -36,7 +36,7 @@ export function addIdentityToRoom(
   roomID: bigint,
   identityCommitment: bigint,
   roomGroups: RoomGroupI[]
-): { status: Boolean; roomGroups: RoomGroupI[] } {
+): { status: boolean; roomGroups: RoomGroupI[] } {
   let added = false;
   const r = findRoomById(roomGroups, roomID);
 

src/verifier.ts

@@ -2,7 +2,6 @@ import type { MessageI, RoomGroupI } from 'discreetly-interfaces';
 import { str2BigInt } from 'discreetly-interfaces';
 import { RLNVerifier } from 'rlnjs';
 import vkey from './verification_key.js';
-import { poseidon1 } from 'poseidon-lite/poseidon1';
 import { findRoomById } from './utils.js';
 import { Group } from '@semaphore-protocol/group';