Getting Error while deploying a nodejs + typescript application on render

[asarkar6589]

Hello, I am facing an issue while deploying my application on render which uses nodejs + typescript + mongodb.

First have a look into my files

Package.json file :
{
“name”: “backend”,
“version”: “1.0.0”,
“main”: “./dist/index.js”,
“type”: “module”,
“scripts”: {
“start”: “node dist/index.js”,
“watch”: “tsc -w”,
“build”: “tsc”,
“dev”: “npx tsx watch ./src/index.ts”
},
“author”: “”,
“license”: “ISC”,
“description”: “”,
“dependencies”: {
“bcryptjs”: “^2.4.3”,
“cookie-parser”: “^1.4.6”,
“cors”: “^2.8.5”,
“dotenv”: “^16.4.5”,
“express”: “^4.19.2”,
“firebase”: “^10.13.1”,
“jsonwebtoken”: “^9.0.2”,
“mongoose”: “^8.6.0”,
“multer”: “^1.4.5-lts.1”
},
“devDependencies”: {
“@types/bcryptjs”: “^2.4.6”,
“@types/cookie-parser”: “^1.4.7”,
“@types/cors”: “^2.8.17”,
“@types/express”: “^4.17.21”,
“@types/jsonwebtoken”: “^9.0.6”,
“@types/multer”: “^1.4.12”,
“tsx”: “^4.19.0”,
“typescript”: “^5.5.4”
}
}

tsconfig.json

{
“compilerOptions”: {
“target”: “ES2020”,
“module”: “NodeNext”,
“rootDir”: “src”,
“moduleResolution”: “NodeNext”,
“outDir”: “dist”,
“esModuleInterop”: true,
“forceConsistentCasingInFileNames”: true,
“strict”: true,
“skipLibCheck”: true,
“resolveJsonModule”: true,
“allowSyntheticDefaultImports”: true
},
“include”: [“src//*.ts", "src//*.d.ts”],
“exclude”: [“node_modules”, “dist”]
}

When I am trying to deploy my application, it fails. It gives me some error like this :

src/controllers/change.ts(1,49): error TS7016: Could not find a declaration file for module ‘express’. ‘/opt/render/project/src/node_modules/express/index.js’ implicitly has an ‘any’ type.
Sep 1 03:35:18 PM Try npm i --save-dev @types/express if it exists or add a new declaration (.d.ts) file containing declare module 'express';

Basically it is saying that there are no types present of the modules that i am using. But you can see in the package.json file that all the types are stored in the dev dependency. Please help me out. I have tried all things.

My build command on render is “npm install && npm run build”

Please help me. This is an assignment given to me post which i will have a offer. Please help me out.

Please please please !!!

[jeremy-render]

Hey,

I understand this is urgent for you, but we don’t provide code support, and there are limited ways we can troubleshoot this on our end since it’s not a Render-specific issue.

In many environments, running npm install by default only installs dependencies and not devDependencies. This is because devDependencies are usually for development tools that aren’t needed in production. For a TypeScript project, the @types packages are necessary to compile your code, and if they aren’t available, the build process will fail. To fix this, make sure your type definitions (@types packages) are installed during deployment by moving all @types packages from devDependencies to dependencies.

Jérémy.
Render Support, UTC+3