I am getting an error when importing files into my node js server file. I usually do it in this way and all the paths are correct so I'm not sure what the error is.

import express from 'express'
import mongoose from 'mongoose'

import data from '../data.js'
import Page from "../models/pageModel.js";

const app = express()
mongoose.connect(process.env.MONGODB_URL || 'mongodb://localhost/note-guard', {
  useNewUrlParser: true,
  useUnifiedTopology: true,
  useCreateIndex: true,
});

app.get('/', (req, res) => {
    res.send('Server is ready');
  });
app.use('/api/pages/:id', async (req, res) => {
  const createdPages = await Page.insertMany(data.pages);
  console.log(createdPages);
  res.send("test");
})

const port = process.env.PORT || 5002;
app.listen(port, () => {
  console.log(`Serve at http://localhost:${port}`);
});

This is the error I get:

internal/process/esm_loader.js:74
    internalBinding('errors').triggerUncaughtException(
                              ^

Error [ERR_MODULE_NOT_FOUND]: Cannot find module '/Users/charlielamb/Desktop/learnCode/note-guard/data.js' imported from /Users/charlielamb/Desktop/learnCode/note-guard/backend/server.js
    at finalizeResolution (internal/modules/esm/resolve.js:265:11)
    at moduleResolve (internal/modules/esm/resolve.js:699:10)
    at Loader.defaultResolve [as _resolve] (internal/modules/esm/resolve.js:810:11)
    at Loader.resolve (internal/modules/esm/loader.js:88:40)
    at Loader.getModuleJob (internal/modules/esm/loader.js:241:28)
    at ModuleWrap.<anonymous> (internal/modules/esm/module_job.js:56:40)
    at link (internal/modules/esm/module_job.js:55:36) {
  code: 'ERR_MODULE_NOT_FOUND'
}

Any help?

I am getting an error when importing files into my node js server file. I usually do it in this way and all the paths are correct so I'm not sure what the error is.

import express from 'express'
import mongoose from 'mongoose'

import data from '../data.js'
import Page from "../models/pageModel.js";

const app = express()
mongoose.connect(process.env.MONGODB_URL || 'mongodb://localhost/note-guard', {
  useNewUrlParser: true,
  useUnifiedTopology: true,
  useCreateIndex: true,
});

app.get('/', (req, res) => {
    res.send('Server is ready');
  });
app.use('/api/pages/:id', async (req, res) => {
  const createdPages = await Page.insertMany(data.pages);
  console.log(createdPages);
  res.send("test");
})

const port = process.env.PORT || 5002;
app.listen(port, () => {
  console.log(`Serve at http://localhost:${port}`);
});

This is the error I get:

internal/process/esm_loader.js:74
    internalBinding('errors').triggerUncaughtException(
                              ^

Error [ERR_MODULE_NOT_FOUND]: Cannot find module '/Users/charlielamb/Desktop/learnCode/note-guard/data.js' imported from /Users/charlielamb/Desktop/learnCode/note-guard/backend/server.js
    at finalizeResolution (internal/modules/esm/resolve.js:265:11)
    at moduleResolve (internal/modules/esm/resolve.js:699:10)
    at Loader.defaultResolve [as _resolve] (internal/modules/esm/resolve.js:810:11)
    at Loader.resolve (internal/modules/esm/loader.js:88:40)
    at Loader.getModuleJob (internal/modules/esm/loader.js:241:28)
    at ModuleWrap.<anonymous> (internal/modules/esm/module_job.js:56:40)
    at link (internal/modules/esm/module_job.js:55:36) {
  code: 'ERR_MODULE_NOT_FOUND'
}

Any help?

• javascript
• node.js
• mongodb
• express

Share Improve this question Follow edited Jul 3, 2021 at 14:54 user15388024 asked Jul 3, 2021 at 14:48 charlietlambcharlietlamb 13111 gold badge22 silver badges1010 bronze badges 3

• 2 Can you open a terminal and type ls -l /Users/charlielamb/Desktop/learnCode/note-guard/data.js? What's the output? – user15388024 Commented Jul 3, 2021 at 14:51
• charlielamb@Charlies-MacBook-Air note-guard % ls -l backend/data.js -rw-r--r-- 1 charlielamb staff 269 3 Jul 15:46 backend/data.js – charlietlamb Commented Jul 3, 2021 at 15:39
• Where does backend e from? That's the wrong path. The file should be in /Users/charlielamb/Desktop/learnCode/note-guard/data.js or you have to use different import paths. – user15388024 Commented Jul 3, 2021 at 18:16

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2 Answers 2

Sorted by: Reset to default 2

To be able to use import expression in nodejs you should add following line to your package.json file: "type": "module". it's after "main": "index.js" and before: "scripts" section. On the other hand you should use const express = require('express') type of expressions

Also you should have the right structure of your project for package.json to be able recognize all your files as "module"

right:

root - client
          - package.json for client
     - server
          - package.json for server

wrong:

root - client
          - package.json
     - server
     - package.json

In order to help you I made a video about this https://youtu.be/NAq3P_QCcOg

server.js, data.js and models are in the same path. Fix the import paths:

import express from 'express'
import mongoose from 'mongoose'

import data from './data.js'
import Page from "./models/pageModel.js";

const app = express()
mongoose.connect(process.env.MONGODB_URL || 'mongodb://localhost/note-guard', {
  useNewUrlParser: true,
  useUnifiedTopology: true,
  useCreateIndex: true,
});

app.get('/', (req, res) => {
    res.send('Server is ready');
  });
app.use('/api/pages/:id', async (req, res) => {
  const createdPages = await Page.insertMany(data.pages);
  console.log(createdPages);
  res.send("test");
})

const port = process.env.PORT || 5002;
app.listen(port, () => {
  console.log(`Serve at http://localhost:${port}`);
});