fix: resolve eslint warnings (#7)

* chore: disable `no-non-null-assertion` rule

* chore: add missing return types

* chore: remove unused vars

* chore: remove unused imports

.eslintrc.json

@@ -22,6 +22,7 @@
     // examples, and because it is not a recommended rule, you should either
     // disable it, or understand what it enforces.
     // https://typescript-eslint.io/rules/explicit-function-return-type/
+    "@typescript-eslint/no-non-null-assertion": "off",
     "@typescript-eslint/explicit-function-return-type": "warn"
   }
 }

functions/src/scheduled/daily_runner.ts

@@ -4,7 +4,7 @@ import * as BotRunner from '../../../src/runner';
 const dailyRunner = functions.pubsub
   .schedule('0,10,30 10,11,15 * * *') // Run every day, At minute 0, 10, and 30 past hour 10, 11, 12, and 15
   .timeZone('Asia/Riyadh')
-  .onRun(async (_) => {
+  .onRun(async () => {
     BotRunner.runner();
   });
 

src/runner.ts

@@ -4,7 +4,7 @@ import { TwitterHelper } from './utils/twitter_helper';
 import { TweetHelper } from './utils/tweet_helper';
 import { SetupHelper } from './utils/setup_helper';
 
-export async function runner() {
+export async function runner(): Promise<void> {
   try {
     console.log('Starting runner 💡\n');
 

src/simulator.ts

@@ -16,7 +16,7 @@ export class Simulator {
   /**
    * It loops through all days in the semester and generates a tweet for each day
    */
-  public async startSimulation() {
+  public async startSimulation(): Promise<void> {
     try {
       await SetupHelper.setupAll();
 
@@ -62,7 +62,7 @@ export class Simulator {
     }
   }
 
-  public static async start() {
+  public static async start(): Promise<void> {
     const calender = await CalenderHelper.getCurrentSemesterCalender();
 
     const simulator = new Simulator(calender!);

src/utils/date_helper.ts

@@ -1,7 +1,7 @@
 import { DateTime, Settings } from 'luxon';
 
 export class DateHelper {
-  public static setup() {
+  public static setup(): void {
     Settings.defaultZone = 'Asia/Riyadh';
   }
 

src/utils/progress_bar_helper.ts

@@ -1,6 +1,5 @@
 import console from 'console';
 import { ProgressBar } from '../classes/progress_bar';
-import { Calendar } from '../types/calendar';
 import { CalenderHelper } from './calender_helper';
 
 export class ProgressBarHelper {

src/utils/setup_helper.ts

@@ -2,7 +2,7 @@ import { DateHelper } from './date_helper';
 import * as dotenv from 'dotenv';
 
 export class SetupHelper {
-  public static async setupAll() {
+  public static async setupAll() : Promise<void> {
     DateHelper.setup();
     dotenv.config();
   }

src/utils/twitter_helper.ts

@@ -11,7 +11,7 @@ export class TwitterHelper {
    * It takes a string as an argument, and then uses the Twitter API to post that string as a tweet
    * @param {string} tweet - string - The tweet you want to post.
    */
-  public async newTweet(tweet: string) {
+  public async newTweet(tweet: string): Promise<void> {
     try {
       await this.twitterClient.v1.tweet(tweet);