diff --git a/package.json b/package.json
index 370e55b..1ff5a44 100644
--- a/package.json
+++ b/package.json
@@ -13,13 +13,16 @@
       "default": "./dist/main.cjs"
     }
   },
+  "imports": {
+    "@/*": "./src/*"
+  },
   "scripts": {
     "start": "tsx src/main.ts",
     "dev": "tsx watch src/main.ts",
     "test:coverage": "vitest run --coverage",
     "test": "vitest",
     "test:ci": "vitest run",
-    "build": "esbuild src/main.ts --bundle --platform=node --target=node16 --format=cjs --outfile=dist/main.cjs --minify",
+    "build": "tsc",
     "format": "prettier -w src",
     "lint": "tsc --noEmit && eslint ./src && prettier -c src",
     "lint:fix": "eslint --fix ./src && prettier -w src",
diff --git a/src/cache/index.ts b/src/cache/index.ts
index 77e55d4..0d13c97 100644
--- a/src/cache/index.ts
+++ b/src/cache/index.ts
@@ -1 +1 @@
-export * from './cache';
+export * from './cache.js';
diff --git a/src/database/config-rule.service.ts b/src/database/config-rule.service.ts
index 5704dcd..edfbce0 100644
--- a/src/database/config-rule.service.ts
+++ b/src/database/config-rule.service.ts
@@ -1,11 +1,11 @@
-import { logger } from '@/logger';
-import type { SpyConfigRuleEntityAzureTable } from '../entities/spy-config-rule.entity';
-import { AzureTable } from './azure-table';
+import { logger } from '@/logger/index.js';
+import type { SpyConfigRuleEntityAzureTable } from '../entities/spy-config-rule.entity.js';
+import { AzureTable } from './azure-table.js';
 import invariant from 'tiny-invariant';
 import { TableClient } from '@azure/data-tables';
-import { env } from '@/environment';
+import { env } from '@/environment/index.js';
 import { ODataExpression } from 'ts-odata-client';
-import { trimStartAndEndSlash } from '@/utils';
+import { trimStartAndEndSlash } from '@/utils/index.js';
 
 export class SpyConfigRuleService {
   private oDataExpresion = ODataExpression.forV4<SpyConfigRuleEntityAzureTable>();
diff --git a/src/database/index.ts b/src/database/index.ts
index 5fd0104..3ddabfb 100644
--- a/src/database/index.ts
+++ b/src/database/index.ts
@@ -1,2 +1,2 @@
-export * from './azure-table';
-export * from './config-rule.service';
+export * from './azure-table.js';
+export * from './config-rule.service.js';
diff --git a/src/entities/index.ts b/src/entities/index.ts
index 787e0bd..516b7d9 100644
--- a/src/entities/index.ts
+++ b/src/entities/index.ts
@@ -1 +1 @@
-export * from './spy-config-rule.entity';
+export * from './spy-config-rule.entity.js';
diff --git a/src/entities/spy-config-rule.entity.ts b/src/entities/spy-config-rule.entity.ts
index be710ab..1e321b2 100644
--- a/src/entities/spy-config-rule.entity.ts
+++ b/src/entities/spy-config-rule.entity.ts
@@ -1,4 +1,4 @@
-import type { AzureTableEntityBase } from '../database/azure-table';
+import type { AzureTableEntityBase } from '../database/azure-table.js';
 
 export interface SpyConfigRuleEntity {
   /**
diff --git a/src/environment/env.ts b/src/environment/env.ts
index 59b2f0e..a2ed987 100644
--- a/src/environment/env.ts
+++ b/src/environment/env.ts
@@ -1,6 +1,6 @@
 import 'dotenv/config';
-import { environmentSchema } from '../environment/env.schema';
-import { extractErorMessage } from '@/utils';
+import { environmentSchema } from '../environment/env.schema.js';
+import { extractErorMessage } from '@/utils/index.js';
 import { zodParser } from '@thaitype/record-parser/zod';
 /**
  * Get environment variables
diff --git a/src/environment/index.ts b/src/environment/index.ts
index c1532d6..7915515 100644
--- a/src/environment/index.ts
+++ b/src/environment/index.ts
@@ -1 +1 @@
-export * from './env';
+export * from './env.js';
diff --git a/src/logger/index.ts b/src/logger/index.ts
index 1ff09ef..3bb73ef 100644
--- a/src/logger/index.ts
+++ b/src/logger/index.ts
@@ -1 +1 @@
-export * from './logger';
+export * from './logger.js';
diff --git a/src/logger/logger.ts b/src/logger/logger.ts
index 097bdbc..23b0794 100644
--- a/src/logger/logger.ts
+++ b/src/logger/logger.ts
@@ -1,6 +1,6 @@
-import { env } from '@/environment';
-import pino from 'pino';
-import pinoHttp from 'pino-http';
+import { env } from '@/environment/index.js';
+import { pino } from 'pino';
+import { pinoHttp } from 'pino-http';
 import fs from 'fs';
 
 const logDir = '.srp/logs';
diff --git a/src/main.ts b/src/main.ts
index 66906bf..07ca9f4 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -1,5 +1,5 @@
-import { server } from './server';
-import { extractErorMessage } from './utils/utils';
+import { server } from './server.js';
+import { extractErorMessage } from './utils/utils.js';
 
 server().catch(error => {
   console.error(extractErorMessage(error));
diff --git a/src/plugins/bootstrap.ts b/src/plugins/bootstrap.ts
index 663f091..ca9cb71 100644
--- a/src/plugins/bootstrap.ts
+++ b/src/plugins/bootstrap.ts
@@ -1,13 +1,13 @@
-import { initSampleRule, spyConfigRuleService } from '../database';
-import { env } from '../environment';
-import { httpLogger, logger, stringLogger } from '../logger';
+import { initSampleRule, spyConfigRuleService } from '../database/index.js';
+import { env } from '../environment/index.js';
+import { httpLogger, logger, stringLogger } from '../logger/index.js';
 import type express from 'express';
-import { spyMiddleware } from './spy-middleware';
-import type { SpyConfigRuleEntityAzureTable } from '@/entities';
-import { SpyRule } from './spy-rule';
-import { cache } from '@/cache';
-import type { RuleConfig } from './rule.schema';
-import { ruleConfigSchema } from './rule.schema';
+import { spyMiddleware } from './spy-middleware.js';
+import type { SpyConfigRuleEntityAzureTable } from '@/entities/index.js';
+import { SpyRule } from './spy-rule.js';
+import { cache } from '@/cache/index.js';
+import type { RuleConfig } from './rule.schema.js';
+import { ruleConfigSchema } from './rule.schema.js';
 import { DataViewer, DataContainer } from '@thaitype/data-viewer-server';
 
 export async function initRulePlugin() {
diff --git a/src/plugins/index.ts b/src/plugins/index.ts
index afd4fca..7226190 100644
--- a/src/plugins/index.ts
+++ b/src/plugins/index.ts
@@ -1,4 +1,4 @@
-export * from './response-transformer';
-export * from './spy-rule-plugin';
-export * from './rule-matcher';
-export * from './bootstrap';
+export * from './response-transformer/index.js';
+export * from './spy-rule-plugin.js';
+export * from './rule-matcher.js';
+export * from './bootstrap.js';
diff --git a/src/plugins/response-transformer/action-expressions/base-action-expression.ts b/src/plugins/response-transformer/action-expressions/base-action-expression.ts
index 8b15069..0a69b8f 100644
--- a/src/plugins/response-transformer/action-expressions/base-action-expression.ts
+++ b/src/plugins/response-transformer/action-expressions/base-action-expression.ts
@@ -1,6 +1,6 @@
-import type { HandleResponseParams } from '@/plugins';
-import type { ExpressionOptions, ExpressionValidateResult } from '../response-transformer-expression';
-import { logger } from '@/logger';
+import type { HandleResponseParams } from '@/plugins/index.js';
+import type { ExpressionOptions, ExpressionValidateResult } from '../response-transformer-expression.js';
+import { logger } from '@/logger/index.js';
 
 export abstract class BaseActionExpression {
   constructor(
diff --git a/src/plugins/response-transformer/action-expressions/index.ts b/src/plugins/response-transformer/action-expressions/index.ts
index 8361132..ce0b7df 100644
--- a/src/plugins/response-transformer/action-expressions/index.ts
+++ b/src/plugins/response-transformer/action-expressions/index.ts
@@ -1 +1 @@
-export * from './replace-status-code';
+export * from './replace-status-code.js';
diff --git a/src/plugins/response-transformer/action-expressions/replace-status-code.ts b/src/plugins/response-transformer/action-expressions/replace-status-code.ts
index 90646a4..837bdf4 100644
--- a/src/plugins/response-transformer/action-expressions/replace-status-code.ts
+++ b/src/plugins/response-transformer/action-expressions/replace-status-code.ts
@@ -1,5 +1,5 @@
-import type { ExpressionValidateResult } from '../response-transformer-expression';
-import { BaseActionExpression } from './base-action-expression';
+import type { ExpressionValidateResult } from '../response-transformer-expression.js';
+import { BaseActionExpression } from './base-action-expression.js';
 
 export class ReplaceStatusCodeActionExpression extends BaseActionExpression {
   validate(): ExpressionValidateResult {
diff --git a/src/plugins/response-transformer/index.ts b/src/plugins/response-transformer/index.ts
index 009222f..8b1214f 100644
--- a/src/plugins/response-transformer/index.ts
+++ b/src/plugins/response-transformer/index.ts
@@ -1 +1 @@
-export * from './response-transformer';
+export * from './response-transformer.js';
diff --git a/src/plugins/response-transformer/response-transformer-expression.ts b/src/plugins/response-transformer/response-transformer-expression.ts
index cb90e81..95f9b1c 100644
--- a/src/plugins/response-transformer/response-transformer-expression.ts
+++ b/src/plugins/response-transformer/response-transformer-expression.ts
@@ -1,6 +1,6 @@
-import type { Rule } from '../rule.schema';
-import type { HandleResponseParams } from '../spy-rule-plugin';
-import { ReplaceStatusCodeActionExpression } from './action-expressions';
+import type { Rule } from '../rule.schema.js';
+import type { HandleResponseParams } from '../spy-rule-plugin.js';
+import { ReplaceStatusCodeActionExpression } from './action-expressions/index.js';
 
 export type ExpressionValidateResult =
   | {
diff --git a/src/plugins/response-transformer/response-transformer.ts b/src/plugins/response-transformer/response-transformer.ts
index f8f892a..7ffbae5 100644
--- a/src/plugins/response-transformer/response-transformer.ts
+++ b/src/plugins/response-transformer/response-transformer.ts
@@ -1,7 +1,7 @@
-import { logger } from '@/logger';
-import type { HandleResponseParams } from '../spy-rule-plugin';
-import { ResponseTransformerExpression } from './response-transformer-expression';
-import type { Rule } from '../rule.schema';
+import { logger } from '@/logger/index.js';
+import type { HandleResponseParams } from '../spy-rule-plugin.js';
+import { ResponseTransformerExpression } from './response-transformer-expression.js';
+import type { Rule } from '../rule.schema.js';
 
 export class ResponseTransformerPlugin {
   static name = 'response-transformer';
diff --git a/src/plugins/rule-matcher.test.ts b/src/plugins/rule-matcher.test.ts
index 7fbca9c..a539ddc 100644
--- a/src/plugins/rule-matcher.test.ts
+++ b/src/plugins/rule-matcher.test.ts
@@ -1,5 +1,5 @@
 import { describe, expect, test } from 'vitest';
-import { isMatchedRule } from './rule-matcher';
+import { isMatchedRule } from './rule-matcher.js';
 import httpMocks from 'node-mocks-http';
 
 const sharedRule = {
diff --git a/src/plugins/rule-matcher.ts b/src/plugins/rule-matcher.ts
index 3fb9178..2f6a2e7 100644
--- a/src/plugins/rule-matcher.ts
+++ b/src/plugins/rule-matcher.ts
@@ -1,5 +1,5 @@
 import type { IncomingMessage } from 'node:http';
-import { trimStartAndEndSlash } from '@/utils';
+import { trimStartAndEndSlash } from '@/utils/index.js';
 
 export function isMatchedRule(
   rule: {
diff --git a/src/plugins/spy-middleware.ts b/src/plugins/spy-middleware.ts
index e9baae3..790309f 100644
--- a/src/plugins/spy-middleware.ts
+++ b/src/plugins/spy-middleware.ts
@@ -1,8 +1,8 @@
 import type { Options as HttpProxyMiddlewareOptions } from 'http-proxy-middleware';
 import { createProxyMiddleware, responseInterceptor } from 'http-proxy-middleware';
-import { env } from '@/environment';
-import { stringLogger } from '@/logger';
-import { SpyRulePlugin } from './spy-rule-plugin';
+import { env } from '@/environment/env.js';
+import { stringLogger } from '@/logger/logger.js';
+import { SpyRulePlugin } from './spy-rule-plugin.js';
 /**
  * Configure proxy middleware
  */
diff --git a/src/plugins/spy-rule-plugin.ts b/src/plugins/spy-rule-plugin.ts
index d9aaeec..5860344 100644
--- a/src/plugins/spy-rule-plugin.ts
+++ b/src/plugins/spy-rule-plugin.ts
@@ -1,8 +1,9 @@
-import { logger } from '@/logger';
+import { logger } from '@/logger/logger.js';
 import type { IncomingMessage, ServerResponse } from 'node:http';
-import { ResponseTransformerPlugin } from './response-transformer';
-import { getSpyConfig } from './bootstrap';
-import { isMatchedRule } from './rule-matcher';
+import { ResponseTransformerPlugin } from './response-transformer/response-transformer.js';
+import { getSpyConfig } from './bootstrap.js';
+import { isMatchedRule } from './rule-matcher.js';
+import type { RuleConfig } from './rule.schema.js';
 
 export interface HandleResponseParams {
   responseBuffer: Buffer;
@@ -20,7 +21,7 @@ export class SpyRulePlugin {
     res.setHeader('Powered-by', 'thaitype/spy-reverse-proxy');
 
     const rule = await getSpyConfig();
-    for (const value of Object.values(rule.rules)) {
+    for (const value of Object.values<RuleConfig['rules'][number]>(rule.rules)) {
       if (isMatchedRule(value, req)) {
         if (value.plugin === ResponseTransformerPlugin.name) {
           const plugin = new ResponseTransformerPlugin(value);
diff --git a/src/plugins/spy-rule.test.ts b/src/plugins/spy-rule.test.ts
index e16ec8d..1d32ffc 100644
--- a/src/plugins/spy-rule.test.ts
+++ b/src/plugins/spy-rule.test.ts
@@ -1,6 +1,6 @@
 import { describe, expect, test } from 'vitest';
-import { SpyRule } from './spy-rule';
-import { RuleConfig } from './rule.schema';
+import { SpyRule } from './spy-rule.js';
+import { RuleConfig } from './rule.schema.js';
 
 const sharedRule = {
   plugin: 'plugin',
diff --git a/src/plugins/spy-rule.ts b/src/plugins/spy-rule.ts
index 3b56df2..9667657 100644
--- a/src/plugins/spy-rule.ts
+++ b/src/plugins/spy-rule.ts
@@ -1,8 +1,8 @@
-import type { SpyConfigRuleEntity } from '@/entities';
-import type { Rule, RuleConfig } from './rule.schema';
-import { trimStartAndEndSlash } from '@/utils';
-import { ResponseTransformerPlugin } from '.';
-import { ResponseTransformerExpression } from './response-transformer/response-transformer-expression';
+import type { SpyConfigRuleEntity } from '@/entities/spy-config-rule.entity.js';
+import type { Rule, RuleConfig } from './rule.schema.js';
+import { trimStartAndEndSlash } from '@/utils/index.js';
+import { ResponseTransformerExpression } from './response-transformer/response-transformer-expression.js';
+import { ResponseTransformerPlugin } from './response-transformer/response-transformer.js';
 
 /**
  * TODO: Hard coded allowed plugins
diff --git a/src/server.ts b/src/server.ts
index c8629ff..850f30d 100644
--- a/src/server.ts
+++ b/src/server.ts
@@ -1,7 +1,7 @@
 import express from 'express';
-import { env } from '@/environment';
-import { logger } from '@/logger';
-import { registerSpyPlugin } from './plugins';
+import { env } from '@/environment/env.js';
+import { logger } from '@/logger/logger.js';
+import { registerSpyPlugin } from './plugins/index.js';
 
 export async function server() {
   const app = express();
diff --git a/src/utils/index.ts b/src/utils/index.ts
index 04bca77..9be8099 100644
--- a/src/utils/index.ts
+++ b/src/utils/index.ts
@@ -1 +1 @@
-export * from './utils';
+export * from './utils.js';
diff --git a/tsconfig.json b/tsconfig.json
index 47d7457..fcb5303 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -12,9 +12,9 @@
       "strict": true,
       "noUncheckedIndexedAccess": true,
     //   /* If transpiling with TypeScript: */
-      // "moduleResolution": "NodeNext",
-      // "module": "NodeNext",
-      // "outDir": "dist",
+      "moduleResolution": "NodeNext",
+      "module": "NodeNext",
+      "outDir": "dist",
     //   "sourceMap": true,
     //   /* AND if you're building for a library: */
     //   "declaration": true,
@@ -22,9 +22,9 @@
     //   "composite": true,
     //   "declarationMap": true,
       /* If NOT transpiling with TypeScript: */
-      "moduleResolution": "Bundler",
-      "module": "ESNext",
-      "noEmit": true,
+      // "moduleResolution": "Bundler",
+      // "module": "ESNext",
+      // "noEmit": true,
     //   /* If your code runs in the DOM: */
       "lib": ["es2022", "dom", "dom.iterable"],
       /* If your code doesn't run in the DOM: */