Pull Request(Backend): Migrate to Typescript

.gitignore

@@ -1,15 +1,16 @@
 # See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
 
 # dependencies
-node_modules
+node_modules/
 /.pnp
 .pnp.js
 
 # testing
-/coverage
+coverage/
 
 # production
-/build
+dist/
+build/
 
 # misc
 .DS_Store

backend/jest.config.js

@@ -0,0 +1,13 @@
+/** @type {import('ts-jest/dist/types').InitialOptionsTsJest} */
+module.exports = {
+  roots: ['<rootDir>/src'],
+  preset: 'ts-jest',
+  testEnvironment: 'node',
+  verbose: true,
+  collectCoverage: true,
+  coverageDirectory: 'coverage',
+  testPathIgnorePatterns: [
+    "/node_modules/",
+    "/routes/"
+  ]
+};

backend/package.json

@@ -4,10 +4,19 @@
     "express": "^4.17.1"
   },
   "scripts": {
-    "start": "node src/index.js",
-    "dev": "nodemon src/index.js"
+    "postinstall": "npm run build",
+    "start": "node dist/index.js",
+    "dev": "nodemon dist/index.js",
+    "test": "jest",
+    "build": "tsc -p tsconfig.json"
   },
   "devDependencies": {
-    "nodemon": "^2.0.15"
+    "@types/express": "^4.17.13",
+    "@types/jest": "^27.0.3",
+    "@types/node": "^16.11.11",
+    "jest": "^27.4.3",
+    "nodemon": "^2.0.15",
+    "ts-jest": "^27.0.7",
+    "typescript": "^4.5.2"
   }
 }

backend/src/client-consumer.ts

@@ -0,0 +1,7 @@
+import Client from "./structures/client";
+import dotenv from 'dotenv';
+
+dotenv.config();
+const client = new Client(process.env.CATALOG_DIRECTORY!);
+
+export default client;

backend/src/index.ts

@@ -0,0 +1,16 @@
+import express from "express";
+import dotenv from "dotenv";
+import { channelsRouter, messagesRouter, wordsRouter  } from "./routes";
+
+dotenv.config();
+
+const app = express();
+
+app.use(express.json());
+
+app.use('/', messagesRouter);
+app.use('/', channelsRouter);
+app.use('/', wordsRouter);
+
+const port = parseInt(process.env.PORT || "3000");
+app.listen(port, () => console.log(`Backend server listening on port ${port}`));

backend/src/routes/channels.ts

@@ -0,0 +1,8 @@
+import express from "express";
+import client from "../client-consumer";
+
+export const channelsRouter = express.Router();
+
+channelsRouter.get('/user/channels/rankedByMessages', (req, res) => {
+  res.send(client.channelsByYourSentMessages.slice(0, 10));
+});

backend/src/routes/index.ts

@@ -0,0 +1,3 @@
+export * from "./channels";
+export * from "./messages";
+export * from "./words";