Error [ERR_REQUIRE_ESM]: require() of ES Module

[carloswm85]

Hello, guys.

I've been struggling with this error for around one hour. Would you mind to help me with some guidance?

I know there are some compatibility issues, but I would have taught that trading-signals would work right away within TS.

I'm getting the following error:

C:\Users\cwm\source\repos\_ta\_ta-server-rest_api-02\node_modules\ts-node\dist\index.js:851
            return old(m, filename);
                   ^
Error [ERR_REQUIRE_ESM]: require() of ES Module C:\Users\cwm\source\repos\_ta\_ta-server-rest_api-02\node_modules\trading-signals\dist\index.js from C:\Users\cwm\source\repos\_ta\_ta-server-rest_api-02\src\services\BinanceService.ts not supported.
Instead change the require of index.js in C:\Users\cwm\source\repos\_ta\_ta-server-rest_api-02\src\services\BinanceService.ts to a dynamic import() which is available in all CommonJS modules.
    at require.extensions.<computed> [as .js] (C:\Users\cwm\source\repos\_ta\_ta-server-rest_api-02\node_modules\ts-node\dist\index.js:851:20)
    at Object.<anonymous> (C:\Users\cwm\source\repos\_ta\_ta-server-rest_api-02\src\services\BinanceService.ts:19:27)
    at m._compile (C:\Users\cwm\source\repos\_ta\_ta-server-rest_api-02\node_modules\ts-node\dist\index.js:857:29)
    at require.extensions.<computed> [as .ts] (C:\Users\cwm\source\repos\_ta\_ta-server-rest_api-02\node_modules\ts-node\dist\index.js:859:16)
    at Object.<anonymous> (C:\Users\cwm\source\repos\_ta\_ta-server-rest_api-02\src\api\binance.ts:24:26)
    at m._compile (C:\Users\cwm\source\repos\_ta\_ta-server-rest_api-02\node_modules\ts-node\dist\index.js:857:29)
    at require.extensions.<computed> [as .ts] (C:\Users\cwm\source\repos\_ta\_ta-server-rest_api-02\node_modules\ts-node\dist\index.js:859:16)
    at Object.<anonymous> (C:\Users\cwm\source\repos\_ta\_ta-server-rest_api-02\src\api\index.ts:8:35)
    at m._compile (C:\Users\cwm\source\repos\_ta\_ta-server-rest_api-02\node_modules\ts-node\dist\index.js:857:29)
    at require.extensions.<computed> [as .ts] (C:\Users\cwm\source\repos\_ta\_ta-server-rest_api-02\node_modules\ts-node\dist\index.js:859:16)
    at Object.<anonymous> (C:\Users\cwm\source\repos\_ta\_ta-server-rest_api-02\src\loaders\express.ts:7:31)
    at m._compile (C:\Users\cwm\source\repos\_ta\_ta-server-rest_api-02\node_modules\ts-node\dist\index.js:857:29)
    at require.extensions.<computed> [as .ts] (C:\Users\cwm\source\repos\_ta\_ta-server-rest_api-02\node_modules\ts-node\dist\index.js:859:16)
    at Object.<anonymous> (C:\Users\cwm\source\repos\_ta\_ta-server-rest_api-02\src\loaders\index.ts:15:35)
    at m._compile (C:\Users\cwm\source\repos\_ta\_ta-server-rest_api-02\node_modules\ts-node\dist\index.js:857:29)
    at require.extensions.<computed> [as .ts] (C:\Users\cwm\source\repos\_ta\_ta-server-rest_api-02\node_modules\ts-node\dist\index.js:859:16)
    at Object.<anonymous> (C:\Users\cwm\source\repos\_ta\_ta-server-rest_api-02\src\app.ts:17:35)
    at m._compile (C:\Users\cwm\source\repos\_ta\_ta-server-rest_api-02\node_modules\ts-node\dist\index.js:857:29)
    at require.extensions.<computed> [as .ts] (C:\Users\cwm\source\repos\_ta\_ta-server-rest_api-02\node_modules\ts-node\dist\index.js:859:16)
    at phase4 (C:\Users\cwm\source\repos\_ta\_ta-server-rest_api-02\node_modules\ts-node\dist\bin.js:466:20)
    at bootstrap (C:\Users\cwm\source\repos\_ta\_ta-server-rest_api-02\node_modules\ts-node\dist\bin.js:54:12)
    at main (C:\Users\cwm\source\repos\_ta\_ta-server-rest_api-02\node_modules\ts-node\dist\bin.js:33:12)
    at Object.<anonymous> (C:\Users\cwm\source\repos\_ta\_ta-server-rest_api-02\node_modules\ts-node\dist\bin.js:579:5) {
  code: 'ERR_REQUIRE_ESM'
}
[nodemon] app crashed - waiting for file changes before starting...

Here you can see my package.json file:

{
  "name": "ta-rest_api",
  "version": "1.0.0",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1",
    "start": "node dist/app.js",
    "dev": "nodemon src/app.ts",
    "build": "tsc"
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "description": "",
  "dependencies": {
    "@binance/connector-typescript": "^0.3.14",
    "agenda": "^5.0.0",
    "dotenv": "^16.4.7",
    "express": "^4.21.1",
    "mongoose": "^8.8.3",
    "swagger-jsdoc": "^6.2.8",
    "swagger-ui-express": "^5.0.1",
    "trading-signals": "^5.0.4",
    "winston": "^3.17.0"
  },
  "devDependencies": {
    "@types/express": "^5.0.0",
    "@types/node": "^22.10.1",
    "@types/swagger-jsdoc": "^6.0.4",
    "@types/swagger-ui-express": "^4.1.7",
    "@types/winston": "^2.4.4",
    "nodemon": "^3.1.7",
    "ts-node": "^10.9.2",
    "typescript": "^5.7.2"
  }
}

And my tsconfig.json file:

{
  "compilerOptions": {
    "target": "ES6",
    "module": "commonjs",
    "outDir": "./dist",
    "rootDir": "./src",
    "strict": true,
    "esModuleInterop": true,
    "forceConsistentCasingInFileNames": true
  },
  "include": [
    "src/**/*"
  ],
  "exclude": [
    "node_modules"
  ]
}

I've also tried some (70%), but not all, of this AI generated solutions: https://chatgpt.com/share/675e4c50-7fe0-800b-9426-1d1f34a8858f (I'll be covering all possible AI approaches next week).

Please, help me out with this if you have some work around.

[bennycode]

Hi @carloswm85, thanks for asking and trying to find a solution. Your main problem is that my code is written with ECMAScript Module syntax but your project uses CommonJS.

Here is how to fix it: #663 (comment)

Hope this helps!

Best,
Benny

[carloswm85]

Well, @bennycode, I was able to fix it, hopefully in the right way, but using a different solution (your previous answer led in the right direction in the long run, thank you for that).

Following these instructions https://www.npmjs.com/package/@tsconfig/node20 for MY node environment v20.9.0:

1. Install the following dependency:

npm install --save-dev @tsconfig/node20

2. Make the following changes to tsconfig.json:

{
    "$schema": "https://json.schemastore.org/tsconfig",
    "_version": "20.1.0",
  "compilerOptions": {
    "lib": [
      "es2022"
    ],
    "module": "node16",
    "target": "es2022",
    "strict": true,
    "esModuleInterop": true,
    "skipLibCheck": true,
    "moduleResolution": "node16",
    "forceConsistentCasingInFileNames": true
  },
  "include": [
    "src/**/*"
  ],
  "exclude": [
    "node_modules"
  ]
}

Look here https://github.com/tsconfig/bases#centralized-recommendations-for-tsconfig-bases for your specific environment.

3. Then, when using the code, use it as follows (in my case, inside a service):

// MY SERVICE
export class BinanceService {
  // SOME CODE...

  // This is a private method
  async getEmacData(arrayOfValues) {

    // ⚠️ The important lines for our current problem ⚠️
    const tradingSignals = await import('trading-signals');
    const { EMA } = tradingSignals;

    // MORE CODE

    const length = 9;
    const open = new EMA(length);
    open.updates(arrayOfValues);
    const result = open.getResult().toNumber();

    return result;
  }
}

So far, the results seem to be the right ones:

---

But I'm not happy with this solution. I'd rather prefer to import it like:

import { Interval, Spot } from "@binance/connector-typescript";

How can I achieve that? PS: I'm rather new to TypeScript development.

[bennycode]

@carloswm85 I have some great news for you! With trading-signals v6 you can import the package also as CJS module:

const {Big, SMA} = require('trading-signals');