diff --git a/.sequelizerc b/.sequelizerc
index 915c148..382d2a5 100644
--- a/.sequelizerc
+++ b/.sequelizerc
@@ -1,6 +1,7 @@
-require("dotenv-flow").config();
+import dotenvFlow from "dotenv-flow";
+dotenvFlow.config();
 
-const path = require("path");
-module.exports = {
-  "config": path.resolve("config", "sequelize.js")
+import { resolve } from "path";
+export default {
+  "config": resolve("config", "sequelize.js")
 };
diff --git a/api/axios.js b/api/axios.js
index 63e46c0..0c87d97 100644
--- a/api/axios.js
+++ b/api/axios.js
@@ -1,10 +1,11 @@
-const axios = require("axios");
-const rateLimit = require("axios-rate-limit");
+import axios from "axios";
+import rateLimit from "axios-rate-limit";
 
-const { baseAPIURL, accountsAPIURL } = require("../constants");
-const logger = require("../utils/logger")(module);
+import { baseAPIURL, accountsAPIURL } from "../constants.js";
+import curriedLogger from "../utils/logger.js";
+const logger = curriedLogger(import.meta);
 
-const authInstance = axios.create({
+export const authInstance = axios.create({
   baseURL: accountsAPIURL,
   timeout: 20000,
   headers: {
@@ -21,7 +22,7 @@ const uncappedAxiosInstance = axios.create({
   },
 });
 
-const axiosInstance = rateLimit(uncappedAxiosInstance, {
+export const axiosInstance = rateLimit(uncappedAxiosInstance, {
   maxRequests: 10,
   perMilliseconds: 5000,
 });
@@ -50,8 +51,3 @@ axiosInstance.interceptors.response.use(
     return Promise.reject(error);
   }
 );
-
-module.exports = {
-  authInstance,
-  axiosInstance
-};
diff --git a/api/spotify.js b/api/spotify.js
index 7a3e8cc..920235a 100644
--- a/api/spotify.js
+++ b/api/spotify.js
@@ -1,9 +1,10 @@
 
-const logger = require("../utils/logger")(module);
+import curriedLogger from "../utils/logger.js";
+const logger = curriedLogger(import.meta);
 
-const typedefs = require("../typedefs");
+import * as typedefs from "../typedefs.js";
 
-const { axiosInstance } = require("./axios");
+import { axiosInstance } from "./axios.js";
 
 const logPrefix = "Spotify API: ";
 
@@ -17,7 +18,7 @@ const logPrefix = "Spotify API: ";
  * @param {any} data request body
  * @param {boolean} inlineData true if data is to be placed inside config
  */
-const singleRequest = async (req, res, method, path, config = {}, data = null, inlineData = false) => {
+export const singleRequest = async (req, res, method, path, config = {}, data = null, inlineData = false) => {
   let resp;
   config.headers = { ...config.headers, ...req.sessHeaders };
   try {
@@ -62,7 +63,7 @@ const singleRequest = async (req, res, method, path, config = {}, data = null, i
   };
 }
 
-const getUserProfile = async (req, res) => {
+export const getUserProfile = async (req, res) => {
   const response = await singleRequest(req, res,
     "GET", "/me",
     { headers: { Authorization: `Bearer ${req.session.accessToken}` } }
@@ -70,7 +71,7 @@ const getUserProfile = async (req, res) => {
   return res.headersSent ? null : response.data;
 }
 
-const getUserPlaylistsFirstPage = async (req, res) => {
+export const getUserPlaylistsFirstPage = async (req, res) => {
   const response = await singleRequest(req, res,
     "GET",
     `/users/${req.session.user.id}/playlists`,
@@ -83,13 +84,13 @@ const getUserPlaylistsFirstPage = async (req, res) => {
   return res.headersSent ? null : response.data;
 }
 
-const getUserPlaylistsNextPage = async (req, res, nextURL) => {
+export const getUserPlaylistsNextPage = async (req, res, nextURL) => {
   const response = await singleRequest(
     req, res, "GET", nextURL);
   return res.headersSent ? null : response.data;
 }
 
-const getPlaylistDetailsFirstPage = async (req, res, initialFields, playlistID) => {
+export const getPlaylistDetailsFirstPage = async (req, res, initialFields, playlistID) => {
   const response = await singleRequest(req, res,
     "GET",
     `/playlists/${playlistID}/`,
@@ -101,13 +102,13 @@ const getPlaylistDetailsFirstPage = async (req, res, initialFields, playlistID)
   return res.headersSent ? null : response.data;
 }
 
-const getPlaylistDetailsNextPage = async (req, res, nextURL) => {
+export const getPlaylistDetailsNextPage = async (req, res, nextURL) => {
   const response = await singleRequest(
     req, res, "GET", nextURL);
   return res.headersSent ? null : response.data;
 }
 
-const addItemsToPlaylist = async (req, res, nextBatch, playlistID) => {
+export const addItemsToPlaylist = async (req, res, nextBatch, playlistID) => {
   const response = await singleRequest(req, res,
     "POST",
     `/playlists/${playlistID}/tracks`,
@@ -117,7 +118,7 @@ const addItemsToPlaylist = async (req, res, nextBatch, playlistID) => {
   return res.headersSent ? null : response.data;
 }
 
-const removeItemsFromPlaylist = async (req, res, nextBatch, playlistID, snapshotID) => {
+export const removeItemsFromPlaylist = async (req, res, nextBatch, playlistID, snapshotID) => {
   // API doesn't document this kind of deletion via the 'positions' field
   // but see here: https://github.com/spotipy-dev/spotipy/issues/95#issuecomment-2263634801
   const response = await singleRequest(req, res,
@@ -130,7 +131,7 @@ const removeItemsFromPlaylist = async (req, res, nextBatch, playlistID, snapshot
   return res.headersSent ? null : response.data;
 }
 
-const checkPlaylistEditable = async (req, res, playlistID, userID) => {
+export const checkPlaylistEditable = async (req, res, playlistID, userID) => {
   let checkFields = ["collaborative", "owner(id)"];
 
   const checkFromData = await getPlaylistDetailsFirstPage(req, res, checkFields.join(), playlistID);
@@ -150,15 +151,3 @@ const checkPlaylistEditable = async (req, res, playlistID, userID) => {
     return true;
   }
 }
-
-module.exports = {
-  singleRequest,
-  getUserProfile,
-  getUserPlaylistsFirstPage,
-  getUserPlaylistsNextPage,
-  getPlaylistDetailsFirstPage,
-  getPlaylistDetailsNextPage,
-  addItemsToPlaylist,
-  removeItemsFromPlaylist,
-  checkPlaylistEditable,
-}
diff --git a/boilerplates/controller.js b/boilerplates/controller.js
index 9619ed6..540233c 100644
--- a/boilerplates/controller.js
+++ b/boilerplates/controller.js
@@ -1,12 +1,13 @@
-const logger = require("../utils/logger")(module);
+import curriedLogger from "../utils/logger.js";
+const logger = curriedLogger(import.meta);
 
-const typedefs = require("../typedefs");
+import * as typedefs from "../typedefs.js";
 
 /**
  * @param {typedefs.Req} req
  * @param {typedefs.Res} res
  */
-const __controller_func = async (req, res) => {
+export const __controller_func = async (req, res) => {
   try {
 
   } catch (error) {
@@ -15,7 +16,3 @@ const __controller_func = async (req, res) => {
     return;
   }
 }
-
-module.exports = {
-  __controller_func
-};
diff --git a/boilerplates/route.js b/boilerplates/route.js
index a4ef0a5..1dbb54f 100644
--- a/boilerplates/route.js
+++ b/boilerplates/route.js
@@ -1,6 +1,7 @@
-const router = require("express").Router();
+import { Router } from "express";
+const router = Router();
 
-const { validate } = require("../validators");
+import { validate } from "../validators/index.js";
 
 router.get(
 
@@ -10,4 +11,4 @@ router.post(
 
 );
 
-module.exports = router;
+export default router;
diff --git a/boilerplates/validator.js b/boilerplates/validator.js
index 75aa736..3537edc 100644
--- a/boilerplates/validator.js
+++ b/boilerplates/validator.js
@@ -1,13 +1,13 @@
-const { body, header, param, query } = require("express-validator");
+import { body, header, param, query } from "express-validator";
 
-const typedefs = require("../typedefs");
+import * as typedefs from "../typedefs.js";
 
 /**
  * @param {typedefs.Req} req
  * @param {typedefs.Res} res
  * @param {typedefs.Next} next
  */
-const __validator_func = async (req, res, next) => {
+export const __validator_func = async (req, res, next) => {
   await body("field_name")
     .notEmpty()
     .withMessage("field_name not defined in body")
@@ -15,7 +15,3 @@ const __validator_func = async (req, res, next) => {
 
   next();
 }
-
-module.exports = {
-  __validator_func
-}
diff --git a/config/dotenv.js b/config/dotenv.js
new file mode 100644
index 0000000..7e9843a
--- /dev/null
+++ b/config/dotenv.js
@@ -0,0 +1,3 @@
+// https://github.com/motdotla/dotenv/issues/133#issuecomment-255298822
+import DotenvFlow from "dotenv-flow";
+export default DotenvFlow.config();
diff --git a/config/sequelize.js b/config/sequelize.js
index 903e981..87a0ba0 100644
--- a/config/sequelize.js
+++ b/config/sequelize.js
@@ -1,4 +1,5 @@
-const logger = require("../utils/logger")(module);
+import curriedLogger from "../utils/logger.js";
+const logger = curriedLogger(import.meta);
 
 const connConfigs = {
   development: {
@@ -8,7 +9,7 @@ const connConfigs = {
     host: process.env.DB_HOST || "127.0.0.1",
     port: process.env.DB_PORT || 5432,
   },
-  staging: {
+  test: {
     use_env_variable: "DB_URL", // use connection string for non-dev env
   },
   production: {
@@ -25,4 +26,4 @@ for (const conf in connConfigs) {
   connConfigs[conf]["dialect"] = process.env.DB_DIALECT || "postgres";
 }
 
-module.exports = connConfigs;
+export default connConfigs;
diff --git a/constants.js b/constants.js
index ae6d41e..c1940ad 100644
--- a/constants.js
+++ b/constants.js
@@ -1,9 +1,9 @@
-const accountsAPIURL = "https://accounts.spotify.com";
-const baseAPIURL = "https://api.spotify.com/v1";
-const sessionName = "spotify-manager";
-const stateKey = "spotify_auth_state";
+export const accountsAPIURL = "https://accounts.spotify.com";
+export const baseAPIURL = "https://api.spotify.com/v1";
+export const sessionName = "spotify-manager";
+export const stateKey = "spotify_auth_state";
 
-const scopes = {
+export const scopes = {
   // ImageUpload: "ugc-image-upload",
   AccessPrivatePlaylists: "playlist-read-private",
   AccessCollaborativePlaylists: "playlist-read-collaborative",
@@ -15,11 +15,3 @@ const scopes = {
   AccessLibrary: "user-library-read",
   AccessUser: "user-read-private",
 };
-
-module.exports = {
-  accountsAPIURL,
-  baseAPIURL,
-  sessionName,
-  stateKey,
-  scopes
-};
diff --git a/controllers/auth.js b/controllers/auth.js
index 40e4d01..4420df5 100644
--- a/controllers/auth.js
+++ b/controllers/auth.js
@@ -1,18 +1,19 @@
-const { authInstance } = require("../api/axios");
+import { authInstance } from "../api/axios.js";
 
-const typedefs = require("../typedefs");
-const { scopes, stateKey, accountsAPIURL, sessionName } = require("../constants");
+import * as typedefs from "../typedefs.js";
+import { scopes, stateKey, accountsAPIURL, sessionName } from "../constants.js";
 
-const generateRandString = require("../utils/generateRandString");
-const { getUserProfile } = require("../api/spotify");
-const logger = require("../utils/logger")(module);
+import generateRandString from "../utils/generateRandString.js";
+import { getUserProfile } from "../api/spotify.js";
+import curriedLogger from "../utils/logger.js";
+const logger = curriedLogger(import.meta);
 
 /**
  * Stateful redirect to Spotify login with credentials
  * @param {typedefs.Req} req
  * @param {typedefs.Res} res
  */
-const login = (_req, res) => {
+export const login = (_req, res) => {
   try {
     const state = generateRandString(16);
     res.cookie(stateKey, state);
@@ -41,7 +42,7 @@ const login = (_req, res) => {
  * @param {typedefs.Req} req
  * @param {typedefs.Res} res
  */
-const callback = async (req, res) => {
+export const callback = async (req, res) => {
   try {
     const { code, state, error } = req.query;
     const storedState = req.cookies ? req.cookies[stateKey] : null;
@@ -104,7 +105,7 @@ const callback = async (req, res) => {
  * @param {typedefs.Req} req
  * @param {typedefs.Res} res
  */
-const refresh = async (req, res) => {
+export const refresh = async (req, res) => {
   try {
     const authForm = {
       refresh_token: req.session.refreshToken,
@@ -139,10 +140,10 @@ const refresh = async (req, res) => {
  * @param {typedefs.Req} req
  * @param {typedefs.Res} res
  */
-const logout = async (req, res) => {
+export const logout = async (req, res) => {
   try {
     const delSession = req.session.destroy((error) => {
-      if(Object.keys(error).length) {
+      if (Object.keys(error).length) {
         res.status(500).send({ message: "Internal Server Error" });
         logger.error("Error while logging out", { error });
         return;
@@ -160,10 +161,3 @@ const logout = async (req, res) => {
     return;
   }
 }
-
-module.exports = {
-  login,
-  callback,
-  refresh,
-  logout
-};
diff --git a/controllers/operations.js b/controllers/operations.js
index dd451fa..37b571a 100644
--- a/controllers/operations.js
+++ b/controllers/operations.js
@@ -1,25 +1,25 @@
-const typedefs = require("../typedefs");
-const logger = require("../utils/logger")(module);
+import * as typedefs from "../typedefs.js";
+import curriedLogger from "../utils/logger.js";
+const logger = curriedLogger(import.meta);
 
-const { getUserPlaylistsFirstPage, getUserPlaylistsNextPage, getPlaylistDetailsFirstPage, getPlaylistDetailsNextPage, addItemsToPlaylist, removeItemsFromPlaylist, checkPlaylistEditable } = require("../api/spotify");
+import { getUserPlaylistsFirstPage, getUserPlaylistsNextPage, getPlaylistDetailsFirstPage, getPlaylistDetailsNextPage, addItemsToPlaylist, removeItemsFromPlaylist, checkPlaylistEditable } from "../api/spotify.js";
 
-const { parseSpotifyLink } = require("../utils/spotifyURITransformer");
-const { randomBool, sleep } = require("../utils/flake");
-const myGraph = require("../utils/graph");
+import { parseSpotifyLink } from "../utils/spotifyURITransformer.js";
+import { randomBool, sleep } from "../utils/flake.js";
+import myGraph from "../utils/graph.js";
 
-const { Op } = require("sequelize");
-const { sequelize } = require("../models");
-/** @type {typedefs.Model} */
-const Playlists = require("../models").playlists;
-/** @type {typedefs.Model} */
-const Links = require("../models").links;
+import { Op } from "sequelize";
+
+import models, { sequelize } from "../models/index.js";
+const Playlists = models.playlists;
+const Links = models.links;
 
 /**
  * Sync user's Spotify data
  * @param {typedefs.Req} req
  * @param {typedefs.Res} res
  */
-const updateUser = async (req, res) => {
+export const updateUser = async (req, res) => {
   try {
     let currentPlaylists = [];
     const uID = req.session.user.id;
@@ -177,7 +177,7 @@ const updateUser = async (req, res) => {
  * @param {typedefs.Req} req
  * @param {typedefs.Res} res
  */
-const fetchUser = async (req, res) => {
+export const fetchUser = async (req, res) => {
   try {
     // if (randomBool(0.5)) {
     // 	res.status(404).send({ message: "Not Found" });
@@ -219,7 +219,7 @@ const fetchUser = async (req, res) => {
  * @param {typedefs.Req} req
  * @param {typedefs.Res} res
  */
-const createLink = async (req, res) => {
+export const createLink = async (req, res) => {
   try {
     // await sleep(1000);
     const uID = req.session.user.id;
@@ -310,7 +310,7 @@ const createLink = async (req, res) => {
  * @param {typedefs.Req} req
  * @param {typedefs.Res} res
 */
-const removeLink = async (req, res) => {
+export const removeLink = async (req, res) => {
   try {
     const uID = req.session.user.id;
 
@@ -475,7 +475,7 @@ const _populateSingleLinkCore = async (req, res, link) => {
  * @param {typedefs.Req} req
  * @param {typedefs.Res} res
  */
-const populateSingleLink = async (req, res) => {
+export const populateSingleLink = async (req, res) => {
   try {
     const uID = req.session.user.id;
     const link = { from: req.body.from, to: req.body.to };
@@ -591,7 +591,7 @@ const _pruneSingleLinkCore = async (req, res, link) => {
  * @param {typedefs.Req} req
  * @param {typedefs.Res} res
 */
-const pruneSingleLink = async (req, res) => {
+export const pruneSingleLink = async (req, res) => {
   try {
     const uID = req.session.user.id;
     const link = { from: req.body.from, to: req.body.to };
@@ -643,12 +643,3 @@ const pruneSingleLink = async (req, res) => {
     return;
   }
 }
-
-module.exports = {
-  updateUser,
-  fetchUser,
-  createLink,
-  removeLink,
-  populateSingleLink,
-  pruneSingleLink,
-};
diff --git a/controllers/playlists.js b/controllers/playlists.js
index 652176c..7efd048 100644
--- a/controllers/playlists.js
+++ b/controllers/playlists.js
@@ -1,15 +1,16 @@
-const logger = require("../utils/logger")(module);
+import curriedLogger from "../utils/logger.js";
+const logger = curriedLogger(import.meta);
 
-const typedefs = require("../typedefs");
-const { getUserPlaylistsFirstPage, getUserPlaylistsNextPage, getPlaylistDetailsFirstPage, getPlaylistDetailsNextPage } = require("../api/spotify");
-const { parseSpotifyLink } = require("../utils/spotifyURITransformer");
+import * as typedefs from "../typedefs.js";
+import { getUserPlaylistsFirstPage, getUserPlaylistsNextPage, getPlaylistDetailsFirstPage, getPlaylistDetailsNextPage } from "../api/spotify.js";
+import { parseSpotifyLink } from "../utils/spotifyURITransformer.js";
 
 /**
  * Retrieve list of all of user's playlists
  * @param {typedefs.Req} req
  * @param {typedefs.Res} res
  */
-const fetchUserPlaylists = async (req, res) => {
+export const fetchUserPlaylists = async (req, res) => {
   try {
     let userPlaylists = {};
 
@@ -65,7 +66,7 @@ const fetchUserPlaylists = async (req, res) => {
  * @param {typedefs.Req} req
  * @param {typedefs.Res} res
  */
-const fetchPlaylistDetails = async (req, res) => {
+export const fetchPlaylistDetails = async (req, res) => {
   try {
     let playlist = {};
     /** @type {typedefs.URIObject} */
@@ -152,8 +153,3 @@ const fetchPlaylistDetails = async (req, res) => {
     return;
   }
 }
-
-module.exports = {
-  fetchUserPlaylists,
-  fetchPlaylistDetails
-};
diff --git a/index.js b/index.js
index 9809886..a7b2dd7 100644
--- a/index.js
+++ b/index.js
@@ -1,23 +1,24 @@
-require("dotenv-flow").config();
+import _ from "./config/dotenv.js";
 
-const util = require("util");
-const express = require("express");
-const session = require("express-session");
+import { promisify } from "util";
+import express from "express";
+import session from "express-session";
 
-const cors = require("cors");
-const cookieParser = require("cookie-parser");
-const helmet = require("helmet");
+import cors from "cors";
+import cookieParser from "cookie-parser";
+import helmet from "helmet";
 
-const { createClient } = require('redis');
-const { RedisStore } = require("connect-redis");
+import { createClient } from 'redis';
+import { RedisStore } from "connect-redis";
 
-const { sessionName } = require("./constants");
-const db = require("./models");
+import { sessionName } from "./constants.js";
+import { sequelize } from "./models/index.js";
 
-const { isAuthenticated } = require("./middleware/authCheck");
-const { getUserProfile } = require("./api/spotify");
+import { isAuthenticated } from "./middleware/authCheck.js";
+import { getUserProfile } from "./api/spotify.js";
 
-const logger = require("./utils/logger")(module);
+import curriedLogger from "./utils/logger.js";
+const logger = curriedLogger(import.meta);
 
 const app = express();
 
@@ -73,7 +74,7 @@ app.use(express.json());
 app.use(express.urlencoded({ extended: true }));
 
 // Static
-app.use(express.static(__dirname + "/static"));
+app.use(express.static(import.meta.dirname + "/static"));
 
 // Healthcheck
 app.use("/health", (req, res) => {
@@ -92,11 +93,13 @@ app.use("/auth-health", isAuthenticated, async (req, res) => {
     return;
   }
 });
-
+import authRoutes from "./routes/auth.js";
+import playlistRoutes from "./routes/playlists.js";
+import operationRoutes from "./routes/operations.js";
 // Routes
-app.use("/api/auth/", require("./routes/auth"));
-app.use("/api/playlists", isAuthenticated, require("./routes/playlists"));
-app.use("/api/operations", isAuthenticated, require("./routes/operations"));
+app.use("/api/auth/", authRoutes);
+app.use("/api/playlists", isAuthenticated, playlistRoutes);
+app.use("/api/operations", isAuthenticated, operationRoutes);
 
 // Fallbacks
 app.use((req, res) => {
@@ -119,8 +122,8 @@ const cleanupFunc = (signal) => {
 
   Promise.allSettled([
     redisClient.disconnect,
-    db.sequelize.close(),
-    util.promisify(server.close),
+    sequelize.close(),
+    promisify(server.close),
   ]).then(() => {
     logger.info("Cleaned up, exiting.");
     process.exit(0);
diff --git a/middleware/authCheck.js b/middleware/authCheck.js
index 481ebe6..72c49e0 100644
--- a/middleware/authCheck.js
+++ b/middleware/authCheck.js
@@ -1,6 +1,7 @@
-const { sessionName } = require("../constants");
-const typedefs = require("../typedefs");
-const logger = require("../utils/logger")(module);
+import { sessionName } from "../constants.js";
+import * as typedefs from "../typedefs.js";
+import curriedLogger from "../utils/logger.js";
+const logger = curriedLogger(import.meta);
 
 /**
  * middleware to check if access token is present
@@ -8,7 +9,7 @@ const logger = require("../utils/logger")(module);
  * @param {typedefs.Res} res
  * @param {typedefs.Next} next
  */
-const isAuthenticated = (req, res, next) => {
+export const isAuthenticated = (req, res, next) => {
   if (req.session.accessToken) {
     req.sessHeaders = {
       "Authorization": `Bearer ${req.session.accessToken}`,
@@ -30,7 +31,3 @@ const isAuthenticated = (req, res, next) => {
     });
   }
 }
-
-module.exports = {
-  isAuthenticated,
-}
diff --git a/migrations/20240727162141-create-playlists.js b/migrations/20240727162141-create-playlists.js
index 372f380..875f096 100644
--- a/migrations/20240727162141-create-playlists.js
+++ b/migrations/20240727162141-create-playlists.js
@@ -1,7 +1,7 @@
 "use strict";
 /** @type {import("sequelize-cli").Migration} */
-module.exports = {
-  async up(queryInterface, Sequelize) {
+export default {
+  up: async function (queryInterface, Sequelize) {
     await queryInterface.createTable("playlists", {
       id: {
         allowNull: false,
@@ -28,7 +28,7 @@ module.exports = {
       }
     });
   },
-  async down(queryInterface, Sequelize) {
+  down: async function (queryInterface, Sequelize) {
     await queryInterface.dropTable("playlists");
   }
 };
diff --git a/migrations/20240730101615-create-links.js b/migrations/20240730101615-create-links.js
index 3c6823d..52aed92 100644
--- a/migrations/20240730101615-create-links.js
+++ b/migrations/20240730101615-create-links.js
@@ -1,7 +1,7 @@
 "use strict";
 /** @type {import("sequelize-cli").Migration} */
-module.exports = {
-  async up(queryInterface, Sequelize) {
+export default {
+  up: async function (queryInterface, Sequelize) {
     await queryInterface.createTable("links", {
       id: {
         allowNull: false,
@@ -28,7 +28,7 @@ module.exports = {
       }
     });
   },
-  async down(queryInterface, Sequelize) {
+  down: async function (queryInterface, Sequelize) {
     await queryInterface.dropTable("links");
   }
 };
diff --git a/models/index.js b/models/index.js
index cf8b61f..ec21585 100644
--- a/models/index.js
+++ b/models/index.js
@@ -1,11 +1,16 @@
 "use strict";
-const fs = require("fs");
-const path = require("path");
-const Sequelize = require("sequelize");
-const logger = require("../utils/logger")(module);
-const basename = path.basename(__filename);
+import { readdirSync } from "fs";
+import { basename as _basename } from "path";
+const basename = _basename(import.meta.filename);
+
+import Sequelize from "sequelize";
+
+import curriedLogger from "../utils/logger.js";
+const logger = curriedLogger(import.meta);
+
+import seqConfig from "../config/sequelize.js"
 const env = process.env.NODE_ENV || "development";
-const config = require(__dirname + "/../config/sequelize.js")[env];
+const config = seqConfig[env];
 const db = {};
 
 let sequelize;
@@ -26,15 +31,22 @@ if (config.use_env_variable) {
 })();
 
 // Read model definitions from folder
-fs
-  .readdirSync(__dirname)
-  .filter(file => {
-    return (file.indexOf(".") !== 0) && (file !== basename) && (file.slice(-3) === ".js");
-  })
-  .forEach(file => {
-    const model = require(path.join(__dirname, file))(sequelize, Sequelize.DataTypes);
-    db[model.name] = model;
-  });
+const modelFiles = readdirSync(import.meta.dirname)
+  .filter(
+    (file) => file.indexOf('.') !== 0
+      && file !== basename
+      && file.slice(-3) === '.js',
+  );
+
+await Promise.all(modelFiles.map(async file => {
+  const model = await import(`./${file}`);
+  if (!model.default) {
+    return;
+  }
+
+  const namedModel = model.default(sequelize, Sequelize.DataTypes);
+  db[namedModel.name] = namedModel;
+}))
 
 // Setup defined associations
 Object.keys(db).forEach(modelName => {
@@ -43,7 +55,9 @@ Object.keys(db).forEach(modelName => {
   }
 });
 
+// clean ts up
 db.sequelize = sequelize;
 db.Sequelize = Sequelize;
-
-module.exports = db;
+export { sequelize as sequelize };
+export { Sequelize as Sequelize };
+export default db;
diff --git a/models/links.js b/models/links.js
index 4ac3b36..9e83b9e 100644
--- a/models/links.js
+++ b/models/links.js
@@ -1,8 +1,6 @@
 "use strict";
-const {
-  Model
-} = require("sequelize");
-module.exports = (sequelize, DataTypes) => {
+import { Model } from "sequelize";
+export default (sequelize, DataTypes) => {
   class links extends Model {
     /**
      * Helper method for defining associations.
@@ -22,4 +20,4 @@ module.exports = (sequelize, DataTypes) => {
     modelName: "links",
   });
   return links;
-};
\ No newline at end of file
+};
diff --git a/models/playlists.js b/models/playlists.js
index e696665..57fa253 100644
--- a/models/playlists.js
+++ b/models/playlists.js
@@ -1,8 +1,6 @@
 "use strict";
-const {
-  Model
-} = require("sequelize");
-module.exports = (sequelize, DataTypes) => {
+import { Model } from "sequelize";
+export default (sequelize, DataTypes) => {
   class playlists extends Model {
     /**
      * Helper method for defining associations.
@@ -22,4 +20,4 @@ module.exports = (sequelize, DataTypes) => {
     modelName: "playlists",
   });
   return playlists;
-};
\ No newline at end of file
+};
diff --git a/package.json b/package.json
index 7c096f7..f66eba5 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,8 @@
   "name": "spotify-manager",
   "version": "0",
   "description": "Personal Spotify playlist manager",
-  "main": "index.js",
+  "exports": "./index.js",
+  "type": "module",
   "scripts": {
     "dev": "cross-env NODE_ENV=development nodemon --delay 2 --exitcrash index.js",
     "test_setup": "npm i && cross-env NODE_ENV=test npx sequelize-cli db:migrate",
diff --git a/routes/auth.js b/routes/auth.js
index f3954ed..db2d4fd 100644
--- a/routes/auth.js
+++ b/routes/auth.js
@@ -1,8 +1,9 @@
-const router = require("express").Router();
+import { Router } from "express";
+const router = Router();
 
-const { login, callback, refresh, logout } = require("../controllers/auth");
-const { isAuthenticated } = require("../middleware/authCheck");
-const validator = require("../validators");
+import { login, callback, refresh, logout } from "../controllers/auth.js";
+import { isAuthenticated } from "../middleware/authCheck.js";
+import { validate } from "../validators/index.js";
 
 router.get(
   "/login",
@@ -25,4 +26,4 @@ router.get(
   logout
 );
 
-module.exports = router;
+export default router;
diff --git a/routes/operations.js b/routes/operations.js
index 3a0efab..bd4f95a 100644
--- a/routes/operations.js
+++ b/routes/operations.js
@@ -1,8 +1,10 @@
-const router = require("express").Router();
+import { Router } from "express";
+const router = Router();
 
-const { updateUser, fetchUser, createLink, removeLink, populateSingleLink, pruneSingleLink } = require("../controllers/operations");
-const { validate } = require("../validators");
-const { createLinkValidator, removeLinkValidator, populateSingleLinkValidator, pruneSingleLinkValidator } = require("../validators/operations");
+import { updateUser, fetchUser, createLink, removeLink, populateSingleLink, pruneSingleLink } from "../controllers/operations.js";
+import { createLinkValidator, removeLinkValidator, populateSingleLinkValidator, pruneSingleLinkValidator } from "../validators/operations.js";
+
+import { validate } from "../validators/index.js";
 
 router.put(
   "/update",
@@ -42,4 +44,4 @@ router.put(
   pruneSingleLink
 );
 
-module.exports = router;
+export default router;
diff --git a/routes/playlists.js b/routes/playlists.js
index e386dea..5e19e48 100644
--- a/routes/playlists.js
+++ b/routes/playlists.js
@@ -1,8 +1,10 @@
-const router = require("express").Router();
+import { Router } from "express";
+const router = Router();
 
-const { fetchUserPlaylists, fetchPlaylistDetails } = require("../controllers/playlists");
-const { getPlaylistDetailsValidator } = require("../validators/playlists");
-const { validate } = require("../validators");
+import { fetchUserPlaylists, fetchPlaylistDetails } from "../controllers/playlists.js";
+import { getPlaylistDetailsValidator } from "../validators/playlists.js";
+
+import { validate } from "../validators/index.js";
 
 router.get(
   "/me",
@@ -16,4 +18,4 @@ router.get(
   fetchPlaylistDetails
 );
 
-module.exports = router;
+export default router;
diff --git a/typedefs.js b/typedefs.js
index 29f1495..0b4c01f 100644
--- a/typedefs.js
+++ b/typedefs.js
@@ -1,10 +1,10 @@
 /**
  * @typedef {import("module")} Module
- * 
+ *
  * @typedef {import("express").Request} Req
  * @typedef {import("express").Response} Res
  * @typedef {import("express").NextFunction} Next
- * 
+ *
  * @typedef {{
  * type: string,
  * is_local: boolean,
@@ -14,25 +14,25 @@
  * title?: string,
  * duration?: number
  * }} URIObject
- * 
+ *
  * @typedef {{
  * username: string,
  * uri: string
  * }} User
- * 
+ *
  * @typedef {{
  * name: string,
  * uri: string,
  * }} SimplifiedPlaylist
- * 
+ *
  * @typedef	{{
  * name: string
  * }} Album
- * 
+ *
  * @typedef	{{
  * name: string
  * }} Artist
- * 
+ *
  * @typedef {{
  * uri: string,
  * name: string,
@@ -40,18 +40,18 @@
  * album: Album,
  * is_local: boolean,
  * }} Track
- * 
+ *
  * @typedef {{
  * added_at: string,
  * track: Track,
  * }} PlaylistTrack
- * 
+ *
  * @typedef {{
  * url: string,
  * height: number,
  * width: number
  * }} ImageObject
- * 
+ *
  * @typedef {{
  * uri: string,
  * name: string,
@@ -64,4 +64,4 @@
  * }} PlaylistDetails
  */
 
-exports.unused = {};
\ No newline at end of file
+export default {};
diff --git a/utils/flake.js b/utils/flake.js
index e229209..15cb218 100644
--- a/utils/flake.js
+++ b/utils/flake.js
@@ -1,7 +1,3 @@
-const sleep = (ms) => new Promise((resolve) => setTimeout(resolve, ms));
+export const sleep = (ms) => new Promise((resolve) => setTimeout(resolve, ms));
 
-const randomBool = (chance_of_failure = 0.25) => Math.random() < chance_of_failure;
-
-module.exports = {
-  sleep, randomBool
-};
+export const randomBool = (chance_of_failure = 0.25) => Math.random() < chance_of_failure;
diff --git a/utils/generateRandString.js b/utils/generateRandString.js
index 119aa17..8322637 100644
--- a/utils/generateRandString.js
+++ b/utils/generateRandString.js
@@ -3,7 +3,7 @@
  * @param  {number} length The length of the string
  * @return {string} The generated string
  */
-module.exports = (length) => {
+export default (length) => {
   const possible = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
   let text = "";
 
diff --git a/utils/graph.js b/utils/graph.js
index 8dcceea..9276245 100644
--- a/utils/graph.js
+++ b/utils/graph.js
@@ -1,6 +1,7 @@
-const logger = require("./logger")(module);
+import curriedLogger from "./logger.js";
+const logger = curriedLogger(import.meta);
 
-const typedefs = require("../typedefs");
+import * as typedefs from "../typedefs.js";
 
 /**
  * Directed graph, may or may not be connected.
@@ -21,7 +22,7 @@ const typedefs = require("../typedefs");
  * console.log(g.detectCycle()); // true
  * ```
 */
-class myGraph {
+export class myGraph {
   /**
    * @param {string[]} nodes Graph nodes IDs
    * @param {{ from: string, to: string }[]} edges Graph edges b/w nodes
@@ -156,4 +157,4 @@ class myGraph {
   }
 }
 
-module.exports = myGraph;
+export default myGraph;
diff --git a/utils/jsonTransformer.js b/utils/jsonTransformer.js
index 33444c9..54bbda3 100644
--- a/utils/jsonTransformer.js
+++ b/utils/jsonTransformer.js
@@ -5,7 +5,7 @@
  * @param {string} delimiter Delimiter of final string
  * @returns {string}
  */
-const getNestedValuesString = (obj, delimiter = ", ") => {
+export const getNestedValuesString = (obj, delimiter = ", ") => {
   let values = [];
   for (key in obj) {
     if (typeof obj[key] !== "object") {
@@ -17,7 +17,3 @@ const getNestedValuesString = (obj, delimiter = ", ") => {
 
   return values.join(delimiter);
 }
-
-module.exports = {
-  getNestedValuesString
-}
diff --git a/utils/logger.js b/utils/logger.js
index 96f4412..d96b546 100644
--- a/utils/logger.js
+++ b/utils/logger.js
@@ -1,10 +1,10 @@
-const path = require("path");
+import path from "path";
+
+import { createLogger, transports, config, format } from "winston";
+import * as typedefs from "../typedefs.js";
 
-const { createLogger, transports, config, format } = require("winston");
 const { combine, label, timestamp, printf, errors } = format;
 
-const typedefs = require("../typedefs");
-
 const getLabel = (callingModule) => {
   if (!callingModule.filename) return "repl";
   const parts = callingModule.filename?.split(path.sep);
@@ -35,9 +35,9 @@ const logFormat = printf(({ level, message, label, timestamp, ...meta }) => {
 
 /**
  * Creates a curried function, and call it with the module in use to get logs with filename
- * @param {typedefs.Module} callingModule The module from which the logger is called
+ * @param {typedefs.Module} callingModule The module from which the logger is called (ESM - import.meta)
  */
-const curriedLogger = (callingModule) => {
+export const curriedLogger = (callingModule) => {
   let winstonLogger = createLogger({
     levels: config.npm.levels,
     format: combine(
@@ -49,12 +49,12 @@ const curriedLogger = (callingModule) => {
     transports: [
       new transports.Console({ level: "info" }),
       new transports.File({
-        filename: __dirname + "/../logs/debug.log",
+        filename: import.meta.dirname + "/../logs/debug.log",
         level: "debug",
         maxsize: 10485760,
       }),
       new transports.File({
-        filename: __dirname + "/../logs/error.log",
+        filename: import.meta.dirname + "/../logs/error.log",
         level: "error",
         maxsize: 1048576,
       }),
@@ -64,4 +64,4 @@ const curriedLogger = (callingModule) => {
   return winstonLogger;
 }
 
-module.exports = curriedLogger;
+export default curriedLogger;
diff --git a/utils/spotifyUriTransformer.js b/utils/spotifyUriTransformer.js
index 9611607..7c76bd9 100644
--- a/utils/spotifyUriTransformer.js
+++ b/utils/spotifyUriTransformer.js
@@ -1,4 +1,4 @@
-const typedefs = require("../typedefs");
+import * as typedefs from "../typedefs.js";
 
 /** @type {RegExp} */
 const base62Pattern = /^[A-Za-z0-9]+$/;
@@ -10,7 +10,7 @@ const base62Pattern = /^[A-Za-z0-9]+$/;
  * @returns {typedefs.URIObject}
  * @throws {TypeError} If the input is not a valid Spotify URI
  */
-const parseSpotifyURI = (uri) => {
+export const parseSpotifyURI = (uri) => {
   const parts = uri.split(":");
 
   if (parts[0] !== "spotify") {
@@ -59,7 +59,7 @@ const parseSpotifyURI = (uri) => {
  * @returns {typedefs.URIObject}
  * @throws {TypeError} If the input is not a valid Spotify link
  */
-const parseSpotifyLink = (link) => {
+export const parseSpotifyLink = (link) => {
   const localPattern = /^https:\/\/open\.spotify\.com\/local\/([^\/]*)\/([^\/]*)\/([^\/]+)\/(\d+)$/;
   const standardPattern = /^https:\/\/open\.spotify\.com\/([^\/]+)\/([^\/?]+)/;
 
@@ -106,7 +106,7 @@ const parseSpotifyLink = (link) => {
  * @param {typedefs.URIObject} uriObj
  * @returns {string}
  */
-const buildSpotifyURI = (uriObj) => {
+export const buildSpotifyURI = (uriObj) => {
   if (uriObj.is_local) {
     const artist = encodeURIComponent(uriObj.artist ?? "");
     const album = encodeURIComponent(uriObj.album ?? "");
@@ -122,7 +122,7 @@ const buildSpotifyURI = (uriObj) => {
  * @param {typedefs.URIObject} uriObj
  * @returns {string}
  */
-const buildSpotifyLink = (uriObj) => {
+export const buildSpotifyLink = (uriObj) => {
   if (uriObj.is_local) {
     const artist = encodeURIComponent(uriObj.artist ?? "");
     const album = encodeURIComponent(uriObj.album ?? "");
@@ -132,10 +132,3 @@ const buildSpotifyLink = (uriObj) => {
   }
   return `https://open.spotify.com/${uriObj.type}/${uriObj.id}`
 }
-
-module.exports = {
-  parseSpotifyURI,
-  parseSpotifyLink,
-  buildSpotifyURI,
-  buildSpotifyLink
-}
diff --git a/validators/index.js b/validators/index.js
index c0ff66e..75f09f6 100644
--- a/validators/index.js
+++ b/validators/index.js
@@ -1,9 +1,9 @@
-const { validationResult } = require("express-validator");
+import { validationResult } from "express-validator";
 
-const { getNestedValuesString } = require("../utils/jsonTransformer");
-const logger = require("../utils/logger")(module);
-
-const typedefs = require("../typedefs");
+import * as typedefs from "../typedefs.js";
+import { getNestedValuesString } from "../utils/jsonTransformer.js";
+import curriedLogger from "../utils/logger.js";
+const logger = curriedLogger(import.meta);
 
 /**
  * Refer: https://stackoverflow.com/questions/58848625/access-messages-in-express-validator
@@ -12,7 +12,7 @@ const typedefs = require("../typedefs");
  * @param {typedefs.Res} res
  * @param {typedefs.Next} next
  */
-const validate = (req, res, next) => {
+export const validate = (req, res, next) => {
   const errors = validationResult(req);
   if (errors.isEmpty()) {
     return next();
@@ -40,7 +40,3 @@ const validate = (req, res, next) => {
   logger.warn("invalid request", { extractedErrors });
   return;
 }
-
-module.exports = {
-  validate
-};
diff --git a/validators/operations.js b/validators/operations.js
index 82e5111..e0b7041 100644
--- a/validators/operations.js
+++ b/validators/operations.js
@@ -1,13 +1,12 @@
-const { body, header, param, query } = require("express-validator");
-
-const typedefs = require("../typedefs");
+import { body, header, param, query } from "express-validator";
+import * as typedefs from "../typedefs.js";
 
 /**
  * @param {typedefs.Req} req
  * @param {typedefs.Res} res
  * @param {typedefs.Next} next
  */
-const createLinkValidator = async (req, res, next) => {
+export const createLinkValidator = async (req, res, next) => {
   await body("from")
     .notEmpty()
     .withMessage("from not defined in body")
@@ -23,9 +22,6 @@ const createLinkValidator = async (req, res, next) => {
   next();
 }
 
-module.exports = {
-  createLinkValidator,
-  removeLinkValidator: createLinkValidator,
-  populateSingleLinkValidator: createLinkValidator,
-  pruneSingleLinkValidator: createLinkValidator,
-}
+export { createLinkValidator as removeLinkValidator };
+export { createLinkValidator as populateSingleLinkValidator };
+export { createLinkValidator as pruneSingleLinkValidator };
diff --git a/validators/playlists.js b/validators/playlists.js
index c9cbad4..07a1100 100644
--- a/validators/playlists.js
+++ b/validators/playlists.js
@@ -1,13 +1,12 @@
-const { body, header, param, query } = require("express-validator");
-
-const typedefs = require("../typedefs");
+import { body, header, param, query } from "express-validator";
+import * as typedefs from "../typedefs.js";
 
 /**
  * @param {typedefs.Req} req
  * @param {typedefs.Res} res
  * @param {typedefs.Next} next
  */
-const getPlaylistDetailsValidator = async (req, res, next) => {
+export const getPlaylistDetailsValidator = async (req, res, next) => {
   await query("playlist_link")
     .notEmpty()
     .withMessage("playlist_link not defined in query")
@@ -16,7 +15,3 @@ const getPlaylistDetailsValidator = async (req, res, next) => {
     .run(req);
   next();
 }
-
-module.exports = {
-  getPlaylistDetailsValidator
-}