This module is declared with using 'export =', and can only be used with a default import when using the 'esModuleInterop' flag

Question

I'm trying to make a simple API using typescript and NodeJS but when I run my code I get this error

"This module is declared with using 'export =', and can only be used with a default import when using the 'esModuleInterop' flag."

This is my code: package.json

    {   "name": "API-Proyecto",   "version": "1.0.0",   "description": "",   "main": "index.js",   "scripts": {     "test": "echo \"Error: no test specified\" && exit 1"   },   "keywords": [],   "author": "",   "license": "ISC",   "dependencies": {     "cors": "^2.8.5",     "express": "^4.17.1",     "jsonwebtoken": "^8.5.1"   },   "devDependencies": {     "@types/cors": "^2.8.6",     "@types/express": "^4.17.6",     "nodemon": "^2.0.4"   } } 

Index.ts

    import express from 'express'; import { Request, Response }  from 'express'; import cors from 'cors';  const app = express();  app.use(express.urlencoded({extended: true})); app.use(express.json); app.use(cors({origin: true, credentials: true}));  app.get('/api/auth/testing', (req: Request, res: Response) =>{     res.status(200).json({         ok : true,         msg : 'hi from my method'     }); });  app.listen(3000, () => {console.log('Server running on 3000' )}); 

tsconfig.json

    {   "compilerOptions": {     "target": "es6",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */     "module": "commonjs",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */     "outDir": "./dist",                        /* Redirect output structure to the directory. */     "esModuleInterop": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */   } } 

Answer 1

Your code is perfectly fine.

Fix

When you make changes to tsconfig, sometimes you need to restart your IDE or Code Editor 🌹