diff --git a/package.json b/package.json
index 8fd8881..4ee0eab 100644
--- a/package.json
+++ b/package.json
@@ -4,7 +4,6 @@
   "description": "A slick application for manging personal finances",
   "license": "MIT",
   "author": "Alexander Ungar",
-  "type": "module",
   "main": "dist/src/index.js",
   "scripts": {
     "clean": "rimraf dist",
@@ -16,11 +15,6 @@
     "dev": "nodemon src/server.ts",
     "test": "nodemon --config ./spec/nodemon.json"
   },
-  "nodemonConfig": {
-    "execMap": {
-      "ts": "ts-node --esm"
-    }
-  },
   "dependencies": {
     "body-parser": "^1.20.2",
     "currency.js": "^2.0.4",
diff --git a/src/app.ts b/src/app.ts
index 8d0583c..cda44eb 100644
--- a/src/app.ts
+++ b/src/app.ts
@@ -1,15 +1,16 @@
 import express from "express";
 import helmet from "helmet";
-import environment from "./config/environment.js";
-import expressLogger from "./logging/expressLogger.js";
-import ApiRouter from "./routes/apiRouter.js";
-import BudgetService from "./usecase/budget/budgetService.js";
-import { errorHandler } from "./middleware/errorHandler.js";
-import BudgetMongoRepository from "./repository/budget/mongo/budgetMongoRepository.js";
-import BudgetSummaryMongoRepository from "./repository/budget/mongo/budgetSummaryMongoRepository.js";
-import TransactionService from "./usecase/transaction/transactionService.js";
-import TransactionMongoRepository from "./repository/transaction/mongo/TransactionMongoRepository.js";
-import OpenApiValidator from "express-openapi-validator";
+import environment from "./config/environment";
+import expressLogger from "./logging/expressLogger";
+import ApiRouter from "./routes/apiRouter";
+import BudgetService from "./usecase/budget/budgetService";
+import { errorHandler } from "./middleware/errorHandler";
+import BudgetMongoRepository from "./repository/budget/mongo/budgetMongoRepository";
+import BudgetSummaryMongoRepository from "./repository/budget/mongo/budgetSummaryMongoRepository";
+import TransactionService from "./usecase/transaction/transactionService";
+import TransactionMongoRepository from "./repository/transaction/mongo/TransactionMongoRepository";
+import * as OpenApiValidator from "express-openapi-validator";
+import * as path from "path";
 
 const app = express();
 
@@ -23,7 +24,7 @@ if (environment.isProd) {
 
 app.use(
   OpenApiValidator.middleware({
-    apiSpec: new URL(`../api/my-finance-pal.yml`, import.meta.url).pathname,
+    apiSpec: path.join(__dirname, "..", "api", "my-finance-pal.yml"),
     validateRequests: true,
     validateResponses: true,
   })
diff --git a/src/config/mongoDb.ts b/src/config/mongoDb.ts
index 0843703..77f718b 100644
--- a/src/config/mongoDb.ts
+++ b/src/config/mongoDb.ts
@@ -1,6 +1,6 @@
 import mongoose from "mongoose";
-import environment from "./environment.js";
-import logger from "../logging/logger.js";
+import environment from "./environment";
+import logger from "../logging/logger";
 import * as util from "util";
 
 export const connect = async (): Promise<void> => {
diff --git a/src/domain/budget.ts b/src/domain/budget.ts
index 3c25548..1c3ebaa 100644
--- a/src/domain/budget.ts
+++ b/src/domain/budget.ts
@@ -1,6 +1,6 @@
-import type UUID from "./uuid.js";
-import type Limit from "./limit.js";
-import { type Transaction } from "./transaction.js";
+import type UUID from "./uuid";
+import type Limit from "./limit";
+import { type Transaction } from "./transaction";
 
 export type BudgetId = UUID;
 
diff --git a/src/domain/limit.ts b/src/domain/limit.ts
index f8e0bdb..f3d94ea 100644
--- a/src/domain/limit.ts
+++ b/src/domain/limit.ts
@@ -1,4 +1,4 @@
-import { AppError } from "../middleware/errorHandler.js";
+import { AppError } from "../middleware/errorHandler";
 
 class Limit {
   constructor(public amount: number) {
diff --git a/src/domain/transaction.ts b/src/domain/transaction.ts
index e3f2a28..e316bc9 100644
--- a/src/domain/transaction.ts
+++ b/src/domain/transaction.ts
@@ -1,4 +1,4 @@
-import type UUID from "./uuid.js";
+import type UUID from "./uuid";
 
 export type TransactionId = UUID;
 
diff --git a/src/domain/uuid.ts b/src/domain/uuid.ts
index 69b7bc0..18bd4e9 100644
--- a/src/domain/uuid.ts
+++ b/src/domain/uuid.ts
@@ -1,5 +1,5 @@
 import { v4 as uuidv4, validate as validateUUID } from "uuid";
-import { AppError } from "../middleware/errorHandler.js";
+import { AppError } from "../middleware/errorHandler";
 
 class UUID {
   public value: string;
diff --git a/src/logging/expressLogger.ts b/src/logging/expressLogger.ts
index 9d471af..9e03419 100644
--- a/src/logging/expressLogger.ts
+++ b/src/logging/expressLogger.ts
@@ -1,6 +1,6 @@
 import expressWinston from "express-winston";
 import winston from "winston";
-import environment from "../config/environment.js";
+import environment from "../config/environment";
 
 const expressLogger = expressWinston.logger({
   level: environment.LOG_LEVEL,
diff --git a/src/logging/logger.ts b/src/logging/logger.ts
index a7a50b6..fe0b838 100644
--- a/src/logging/logger.ts
+++ b/src/logging/logger.ts
@@ -1,5 +1,5 @@
 import winston from "winston";
-import environment from "../config/environment.js";
+import environment from "../config/environment";
 
 const logger = winston.createLogger({
   level: environment.LOG_LEVEL,
diff --git a/src/middleware/errorHandler.ts b/src/middleware/errorHandler.ts
index 1ce19be..73e2f8d 100644
--- a/src/middleware/errorHandler.ts
+++ b/src/middleware/errorHandler.ts
@@ -1,5 +1,5 @@
 import type * as Http from "http";
-import logger from "../logging/logger.js";
+import logger from "../logging/logger";
 import * as util from "util";
 import { type NextFunction, type Request, type Response } from "express";
 
diff --git a/src/preStart.ts b/src/preStart.ts
index 628f361..edb3347 100644
--- a/src/preStart.ts
+++ b/src/preStart.ts
@@ -7,6 +7,7 @@
 // NOTE: DO NOT IMPORT ANY SOURCE CODE HERE
 import dotenv from "dotenv";
 import { parse } from "ts-command-line-args";
+import path from "path";
 
 // **** Types **** //
 
@@ -27,7 +28,7 @@ const args = parse<Args>({
 
 // Set the env file
 const dotenvConfig = dotenv.config({
-  path: new URL(`../env/${args.env}.env`, import.meta.url).pathname,
+  path: path.join(__dirname, "..", "env", `${args.env}.env`),
 });
 if (dotenvConfig.error != null) {
   throw dotenvConfig.error;
diff --git a/src/repository/budget/budgetRepository.ts b/src/repository/budget/budgetRepository.ts
index 75b6d58..1f5a05a 100644
--- a/src/repository/budget/budgetRepository.ts
+++ b/src/repository/budget/budgetRepository.ts
@@ -1,4 +1,4 @@
-import { type Budget } from "../../domain/budget.js";
+import { type Budget } from "../../domain/budget";
 
 interface BudgetRepository {
   findAll: () => Promise<Budget[]>;
diff --git a/src/repository/budget/budgetSummaryRepository.ts b/src/repository/budget/budgetSummaryRepository.ts
index dc50ded..a89fab2 100644
--- a/src/repository/budget/budgetSummaryRepository.ts
+++ b/src/repository/budget/budgetSummaryRepository.ts
@@ -1,4 +1,4 @@
-import { type BudgetId, type BudgetSummary } from "../../domain/budget.js";
+import { type BudgetId, type BudgetSummary } from "../../domain/budget";
 
 interface BudgetSummaryRepository {
   insert: (summary: BudgetSummary) => Promise<BudgetSummary>;
diff --git a/src/repository/budget/entity/budgetSummaryEntity.ts b/src/repository/budget/entity/budgetSummaryEntity.ts
index d3f6a52..e8e558f 100644
--- a/src/repository/budget/entity/budgetSummaryEntity.ts
+++ b/src/repository/budget/entity/budgetSummaryEntity.ts
@@ -1,4 +1,4 @@
-import type TransactionEntity from "../../transaction/entity/transactionEntity.js";
+import type TransactionEntity from "../../transaction/entity/transactionEntity";
 
 interface BudgetSummaryEntity {
   id: string;
diff --git a/src/repository/budget/entity/converters.ts b/src/repository/budget/entity/converters.ts
index ec9494e..6f97016 100644
--- a/src/repository/budget/entity/converters.ts
+++ b/src/repository/budget/entity/converters.ts
@@ -1,9 +1,9 @@
-import { type Budget, type BudgetSummary } from "../../../domain/budget.js";
-import type BudgetSummaryEntity from "./budgetSummaryEntity.js";
-import UUID from "../../../domain/uuid.js";
-import Limit from "../../../domain/limit.js";
-import type BudgetEntity from "./budgetEntity.js";
-import { TransactionEntityConverter } from "../../transaction/entity/converters.js";
+import { type Budget, type BudgetSummary } from "../../../domain/budget";
+import type BudgetSummaryEntity from "./budgetSummaryEntity";
+import UUID from "../../../domain/uuid";
+import Limit from "../../../domain/limit";
+import type BudgetEntity from "./budgetEntity";
+import { TransactionEntityConverter } from "../../transaction/entity/converters";
 
 export const BudgetEntityConverter = {
   toDomain: (entity: BudgetEntity): Budget => ({
diff --git a/src/repository/budget/mongo/budgetMongoRepository.ts b/src/repository/budget/mongo/budgetMongoRepository.ts
index 452d464..7d54240 100644
--- a/src/repository/budget/mongo/budgetMongoRepository.ts
+++ b/src/repository/budget/mongo/budgetMongoRepository.ts
@@ -1,6 +1,6 @@
-import type BudgetRepository from "../budgetRepository.js";
-import { BudgetEntityConverter } from "../entity/converters.js";
-import { BudgetSummaryModel } from "./models.js";
+import type BudgetRepository from "../budgetRepository";
+import { BudgetEntityConverter } from "../entity/converters";
+import { BudgetSummaryModel } from "./models";
 
 export const findBudgets: BudgetRepository["findAll"] = async () => {
   const found = await BudgetSummaryModel.find().select("-transactions");
diff --git a/src/repository/budget/mongo/budgetSummaryMongoRepository.ts b/src/repository/budget/mongo/budgetSummaryMongoRepository.ts
index ad99c62..e7f12d3 100644
--- a/src/repository/budget/mongo/budgetSummaryMongoRepository.ts
+++ b/src/repository/budget/mongo/budgetSummaryMongoRepository.ts
@@ -1,7 +1,7 @@
-import type BudgetSummaryRepository from "../budgetSummaryRepository.js";
-import { BudgetSummaryEntityConverter } from "../entity/converters.js";
-import { type BudgetId } from "../../../domain/budget.js";
-import { BudgetSummaryModel } from "./models.js";
+import type BudgetSummaryRepository from "../budgetSummaryRepository";
+import { BudgetSummaryEntityConverter } from "../entity/converters";
+import { type BudgetId } from "../../../domain/budget";
+import { BudgetSummaryModel } from "./models";
 
 export const insertBudgetSummary: BudgetSummaryRepository["insert"] = async (
   summary
diff --git a/src/repository/budget/mongo/models.ts b/src/repository/budget/mongo/models.ts
index a8f6748..fd1b4e6 100644
--- a/src/repository/budget/mongo/models.ts
+++ b/src/repository/budget/mongo/models.ts
@@ -1,6 +1,6 @@
 import mongoose from "mongoose";
-import budgetSummarySchema from "./schema/budgetSummarySchema.js";
-import type BudgetSummaryEntity from "../entity/budgetSummaryEntity.js";
+import budgetSummarySchema from "./schema/budgetSummarySchema";
+import type BudgetSummaryEntity from "../entity/budgetSummaryEntity";
 
 export const BudgetSummaryModel = mongoose.model<BudgetSummaryEntity>(
   "BudgetSummary",
diff --git a/src/repository/budget/mongo/schema/budgetSummarySchema.ts b/src/repository/budget/mongo/schema/budgetSummarySchema.ts
index b8ec7ca..aec86fa 100644
--- a/src/repository/budget/mongo/schema/budgetSummarySchema.ts
+++ b/src/repository/budget/mongo/schema/budgetSummarySchema.ts
@@ -1,6 +1,6 @@
 import mongoose, { Schema } from "mongoose";
-import type BudgetSummaryEntity from "../../entity/budgetSummaryEntity.js";
-import transactionSchema from "../../../transaction/mongo/schema/transactionSchema.js";
+import type BudgetSummaryEntity from "../../entity/budgetSummaryEntity";
+import transactionSchema from "../../../transaction/mongo/schema/transactionSchema";
 
 const Types = Schema.Types;
 
diff --git a/src/repository/transaction/entity/converters.ts b/src/repository/transaction/entity/converters.ts
index 9d977fb..1867497 100644
--- a/src/repository/transaction/entity/converters.ts
+++ b/src/repository/transaction/entity/converters.ts
@@ -1,6 +1,6 @@
-import { type Transaction } from "../../../domain/transaction.js";
-import UUID from "../../../domain/uuid.js";
-import type TransactionEntity from "./transactionEntity.js";
+import { type Transaction } from "../../../domain/transaction";
+import UUID from "../../../domain/uuid";
+import type TransactionEntity from "./transactionEntity";
 
 export const TransactionEntityConverter = {
   toEntity: (domain: Transaction): TransactionEntity => ({
diff --git a/src/repository/transaction/mongo/TransactionMongoRepository.ts b/src/repository/transaction/mongo/TransactionMongoRepository.ts
index 13f915f..6b88cda 100644
--- a/src/repository/transaction/mongo/TransactionMongoRepository.ts
+++ b/src/repository/transaction/mongo/TransactionMongoRepository.ts
@@ -1,7 +1,7 @@
-import type TransactionRepository from "../transactionRepository.js";
-import { TransactionEntityConverter } from "../entity/converters.js";
-import { BudgetSummaryModel } from "../../budget/mongo/models.js";
-import type BudgetSummaryEntity from "../../budget/entity/budgetSummaryEntity.js";
+import type TransactionRepository from "../transactionRepository";
+import { TransactionEntityConverter } from "../entity/converters";
+import { BudgetSummaryModel } from "../../budget/mongo/models";
+import type BudgetSummaryEntity from "../../budget/entity/budgetSummaryEntity";
 
 export const findAllTransactionsForBudget: TransactionRepository["findAllForBudget"] =
   async (budgetId) => {
diff --git a/src/repository/transaction/mongo/schema/transactionSchema.ts b/src/repository/transaction/mongo/schema/transactionSchema.ts
index 444727b..272b733 100644
--- a/src/repository/transaction/mongo/schema/transactionSchema.ts
+++ b/src/repository/transaction/mongo/schema/transactionSchema.ts
@@ -1,5 +1,5 @@
 import mongoose, { Schema } from "mongoose";
-import type TransactionEntity from "../../entity/transactionEntity.js";
+import type TransactionEntity from "../../entity/transactionEntity";
 
 const Types = Schema.Types;
 
diff --git a/src/repository/transaction/transactionRepository.ts b/src/repository/transaction/transactionRepository.ts
index e2b13ec..3f14fdc 100644
--- a/src/repository/transaction/transactionRepository.ts
+++ b/src/repository/transaction/transactionRepository.ts
@@ -1,5 +1,5 @@
-import { type Transaction } from "../../domain/transaction.js";
-import { type BudgetId } from "../../domain/budget.js";
+import { type Transaction } from "../../domain/transaction";
+import { type BudgetId } from "../../domain/budget";
 
 interface TransactionRepository {
   findAllForBudget: (budgetId: BudgetId) => Promise<Transaction[] | undefined>;
diff --git a/src/routes/apiPaths.ts b/src/routes/apiPaths.ts
index a26bb43..980bd7d 100644
--- a/src/routes/apiPaths.ts
+++ b/src/routes/apiPaths.ts
@@ -1,4 +1,4 @@
-import { type operations, type paths } from "../../generated/api.js";
+import { type operations, type paths } from "../../generated/api";
 
 const apiPaths: Record<keyof operations, keyof paths> = {
   createBudget: "/budgets",
diff --git a/src/routes/apiRouter.ts b/src/routes/apiRouter.ts
index e03b16d..57bef47 100644
--- a/src/routes/apiRouter.ts
+++ b/src/routes/apiRouter.ts
@@ -1,8 +1,8 @@
 import { Router } from "express";
-import BudgetRouter from "./budget/budgetRouter.js";
-import type BudgetUseCases from "../usecase/budget/budgetUseCases.js";
-import TransactionRouter from "./transaction/transactionRouter.js";
-import type TransactionUseCases from "../usecase/transaction/transactionUseCases.js";
+import BudgetRouter from "./budget/budgetRouter";
+import type BudgetUseCases from "../usecase/budget/budgetUseCases";
+import TransactionRouter from "./transaction/transactionRouter";
+import type TransactionUseCases from "../usecase/transaction/transactionUseCases";
 
 const ApiRouter = (
   budgetUseCases: BudgetUseCases,
diff --git a/src/routes/budget/budgetRouter.ts b/src/routes/budget/budgetRouter.ts
index fa73bd6..844be4e 100644
--- a/src/routes/budget/budgetRouter.ts
+++ b/src/routes/budget/budgetRouter.ts
@@ -1,16 +1,16 @@
 import { type Request, type Response, Router } from "express";
-import type BudgetUseCases from "../../usecase/budget/budgetUseCases.js";
+import type BudgetUseCases from "../../usecase/budget/budgetUseCases";
 import asyncHandler from "express-async-handler";
-import { type NewBudgetDto } from "./dto/budget.js";
+import { type NewBudgetDto } from "./dto/budget";
 import { StatusCodes } from "http-status-codes";
 import {
   BudgetDtoConverter,
   BudgetSummaryDtoConverter,
   NewBudgetDtoConverter,
-} from "./dto/converters.js";
-import toExpressPath from "../toExpressPath.js";
-import UUID from "../../domain/uuid.js";
-import apiPaths from "../apiPaths.js";
+} from "./dto/converters";
+import toExpressPath from "../toExpressPath";
+import UUID from "../../domain/uuid";
+import apiPaths from "../apiPaths";
 
 export const createBudget =
   (createBudget: BudgetUseCases["createBudget"]) =>
diff --git a/src/routes/budget/dto/budget.ts b/src/routes/budget/dto/budget.ts
index 9b44fb7..0069a80 100644
--- a/src/routes/budget/dto/budget.ts
+++ b/src/routes/budget/dto/budget.ts
@@ -1,4 +1,4 @@
-import { type components } from "../../../../generated/api.js";
+import { type components } from "../../../../generated/api";
 
 export type BudgetDto = components["schemas"]["Budget"];
 export type BudgetSummaryDto = components["schemas"]["BudgetSummary"];
diff --git a/src/routes/budget/dto/converters.ts b/src/routes/budget/dto/converters.ts
index 06a9274..1f5a70a 100644
--- a/src/routes/budget/dto/converters.ts
+++ b/src/routes/budget/dto/converters.ts
@@ -2,15 +2,15 @@ import {
   type Budget,
   type BudgetSummary,
   type NewBudget,
-} from "../../../domain/budget.js";
-import Limit from "../../../domain/limit.js";
-import { toDate, toIsoDate } from "../../../util/date.js";
+} from "../../../domain/budget";
+import Limit from "../../../domain/limit";
+import { toDate, toIsoDate } from "../../../util/date";
 import {
   type BudgetDto,
   type BudgetSummaryDto,
   type NewBudgetDto,
-} from "./budget.js";
-import { TransactionDtoConverter } from "../../transaction/dto/converters.js";
+} from "./budget";
+import { TransactionDtoConverter } from "../../transaction/dto/converters";
 
 export const NewBudgetDtoConverter = {
   toDomain: (dto: NewBudgetDto): NewBudget => ({
diff --git a/src/routes/transaction/dto/converters.ts b/src/routes/transaction/dto/converters.ts
index 9350747..1e87da5 100644
--- a/src/routes/transaction/dto/converters.ts
+++ b/src/routes/transaction/dto/converters.ts
@@ -1,8 +1,8 @@
-import { type NewTransactionDto, type TransactionDto } from "./transaction.js";
+import { type NewTransactionDto, type TransactionDto } from "./transaction";
 import {
   type NewTransaction,
   type Transaction,
-} from "../../../domain/transaction.js";
+} from "../../../domain/transaction";
 
 export const NewTransactionDtoConverter = {
   toDomain: (dto: NewTransactionDto): NewTransaction => ({
diff --git a/src/routes/transaction/dto/transaction.ts b/src/routes/transaction/dto/transaction.ts
index 56e5197..ee22801 100644
--- a/src/routes/transaction/dto/transaction.ts
+++ b/src/routes/transaction/dto/transaction.ts
@@ -1,4 +1,4 @@
-import { type components } from "../../../../generated/api.js";
+import { type components } from "../../../../generated/api";
 
 export type NewTransactionDto = components["schemas"]["NewTransaction"];
 export type TransactionDto = components["schemas"]["Transaction"];
diff --git a/src/routes/transaction/transactionRouter.ts b/src/routes/transaction/transactionRouter.ts
index 02d186f..a496c6c 100644
--- a/src/routes/transaction/transactionRouter.ts
+++ b/src/routes/transaction/transactionRouter.ts
@@ -1,13 +1,13 @@
-import type TransactionUseCases from "../../usecase/transaction/transactionUseCases.js";
+import type TransactionUseCases from "../../usecase/transaction/transactionUseCases";
 import { type Request, type Response, Router } from "express";
 import {
   NewTransactionDtoConverter,
   TransactionDtoConverter,
-} from "./dto/converters.js";
-import UUID from "../../domain/uuid.js";
+} from "./dto/converters";
+import UUID from "../../domain/uuid";
 import { StatusCodes } from "http-status-codes";
-import toExpressPath from "../toExpressPath.js";
-import apiPaths from "../apiPaths.js";
+import toExpressPath from "../toExpressPath";
+import apiPaths from "../apiPaths";
 import asyncHandler from "express-async-handler";
 
 export const createTransaction =
diff --git a/src/server.ts b/src/server.ts
index 73b2d3b..b2bd5eb 100644
--- a/src/server.ts
+++ b/src/server.ts
@@ -1,12 +1,14 @@
-import "./preStart.js";
+import "./preStart";
 import * as http from "http";
-import app from "./app.js";
-import { listenToErrorEvents } from "./middleware/errorHandler.js";
-import logger from "./logging/logger.js";
-import environment from "./config/environment.js";
-import mongoDb from "./config/mongoDb.js";
+import app from "./app";
+import { listenToErrorEvents } from "./middleware/errorHandler";
+import logger from "./logging/logger";
+import environment from "./config/environment";
+import mongoDb from "./config/mongoDb";
 
-await mongoDb.connect();
+void (async () => {
+  await mongoDb.connect();
+})();
 
 const onListening = (server: http.Server) => (): void => {
   const addr = server.address();
diff --git a/src/usecase/budget/budgetService.ts b/src/usecase/budget/budgetService.ts
index 3dfedb0..c59e403 100644
--- a/src/usecase/budget/budgetService.ts
+++ b/src/usecase/budget/budgetService.ts
@@ -1,8 +1,8 @@
-import { type BudgetSummary } from "../../domain/budget.js";
-import type BudgetSummaryRepository from "../../repository/budget/budgetSummaryRepository.js";
-import type BudgetUseCases from "./budgetUseCases.js";
-import UUID from "../../domain/uuid.js";
-import type BudgetRepository from "../../repository/budget/budgetRepository.js";
+import { type BudgetSummary } from "../../domain/budget";
+import type BudgetSummaryRepository from "../../repository/budget/budgetSummaryRepository";
+import type BudgetUseCases from "./budgetUseCases";
+import UUID from "../../domain/uuid";
+import type BudgetRepository from "../../repository/budget/budgetRepository";
 
 export const createBudget: (
   insertBudget: BudgetSummaryRepository["insert"]
diff --git a/src/usecase/budget/budgetUseCases.ts b/src/usecase/budget/budgetUseCases.ts
index 5a534f1..18ea1bc 100644
--- a/src/usecase/budget/budgetUseCases.ts
+++ b/src/usecase/budget/budgetUseCases.ts
@@ -3,7 +3,7 @@ import {
   type BudgetId,
   type BudgetSummary,
   type NewBudget,
-} from "../../domain/budget.js";
+} from "../../domain/budget";
 
 interface BudgetUseCases {
   createBudget: (newBudget: NewBudget) => Promise<Budget>;
diff --git a/src/usecase/transaction/transactionService.ts b/src/usecase/transaction/transactionService.ts
index 804c6ec..2deb9eb 100644
--- a/src/usecase/transaction/transactionService.ts
+++ b/src/usecase/transaction/transactionService.ts
@@ -1,7 +1,7 @@
-import type TransactionRepository from "../../repository/transaction/transactionRepository.js";
-import type TransactionUseCases from "./transactionUseCases.js";
-import { type Transaction } from "../../domain/transaction.js";
-import UUID from "../../domain/uuid.js";
+import type TransactionRepository from "../../repository/transaction/transactionRepository";
+import type TransactionUseCases from "./transactionUseCases";
+import { type Transaction } from "../../domain/transaction";
+import UUID from "../../domain/uuid";
 import currency from "currency.js";
 
 const addNewTransactionToBudget: (
diff --git a/src/usecase/transaction/transactionUseCases.ts b/src/usecase/transaction/transactionUseCases.ts
index 40b2635..7bb1f9c 100644
--- a/src/usecase/transaction/transactionUseCases.ts
+++ b/src/usecase/transaction/transactionUseCases.ts
@@ -1,8 +1,8 @@
-import { type BudgetId } from "../../domain/budget.js";
+import { type BudgetId } from "../../domain/budget";
 import {
   type NewTransaction,
   type Transaction,
-} from "../../domain/transaction.js";
+} from "../../domain/transaction";
 
 interface TransactionUseCases {
   addNewTransactionToBudget: (
diff --git a/tsconfig.json b/tsconfig.json
index 1922493..acb2875 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -4,9 +4,9 @@
 
     /* Basic Options */
     // "incremental": true,                   /* Enable incremental compilation */
-    "target": "ESNext",
+    "target": "ES2022",
     /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */
-    "module": "NodeNext",
+    "module": "CommonJS",
     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */
     // "lib": [],                             /* Specify library files to be included in the compilation. */
     // "allowJs": true,                       /* Allow javascript files to be compiled. */
@@ -45,7 +45,7 @@
     // "noFallthroughCasesInSwitch": true,    /* Report errors for fallthrough cases in switch statement. */
 
     /* Module Resolution Options */
-    "moduleResolution": "NodeNext",
+    "moduleResolution": "Node",
     /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */
     "baseUrl": "./",
     /* Base directory to resolve non-absolute module names. */