tsx (typescript-execute) imports index.js instead of index.d.ts

Question

I'm trying to set up tsx (typescript-execute) in my project, my package.json is as follows:

{
  "name": "bb-tcg-backend",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "type": "module",
  "scripts": {
    "start": "node index.js",
    "dev": "npx tsx watch ./index.js",
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "prisma": {
    "seed": "node prisma/seed.js"
  },
  "devDependencies": {
    "nodemon": "^3.1.7",
    "prisma": "^6.2.1"
  },
  "dependencies": {
    "@prisma/client": "^6.2.1",
    "@types/express": "^5.0.0",
    "@types/node": "^22.10.7",
    "express": "^4.21.2",
    "express-openapi": "^12.1.3",
    "openapi-request-validator": "^12.1.3",
    "tsx": "^4.19.2",
    "typescript": "^5.7.3"
  }
}

and my tsconfig.json:

{
    "compilerOptions": {
        "moduleDetection": "force",
        "module": "ES2022",
        "moduleResolution": "node",
        "target": "ES2022",
        "resolveJsonModule": true,
        "allowJs": true,
        "esModuleInterop": true,
        "isolatedModules": true
    }
}

When I do npm run dev tsx fails to import the openapi-request-validator package. It imports its index.js instead of the correct index.d.ts which is set up differently and as a result my code breaks. I cant figure out why it cant find the correct file. What could be the problem?

EDIT: tsc can find it without issue

======== Module name 'openapi-request-validator' was successfully resolved to '/home/martinkupa/Documents/coding/intro-camejo/tp2/back/node_modules/openapi-request-validator/dist/index.d.ts' with Package ID 'openapi-request-validator/dist/[email protected]'. ========

EDIT 2: For SEO purposes, the problem when running under the old tsconfig.json was TypeError: OpenAPIRequestValidator is not a constructor.

Fullaccess · Accepted Answer · 2025-01-21 01:59:51Z

1

It seems that tsx doesnt yet support loading .d.ts files.

EDIT: It seems like this might be an issue with the package itself instead of my config. In any case, I managed to make it work both on tsc and tsx by removing all configuration related to ES6 modules from my tsconfig.json and changing the target to ES5

{
    "compilerOptions": {
        "moduleResolution": "node",
        "target": "ES5",
        "outDir": "dist/",
        "resolveJsonModule": true,
        "allowJs": true,
        "esModuleInterop": true,
        "isolatedModules": true,
    },
}

edited Jan 21 at 1:59

answered Jan 20 at 23:38

Fullaccess

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