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I have a file

const {ipcRenderer} = require('electron')

6, which is loaded on the client side. In that file I have code that calls functions from other JavaScript files. My attempt was to use

var m = require('./messages');

in order to load the contents of

const {ipcRenderer} = require('electron')

7 (just like I do on the server side) and later on call functions from that file. However,

const {ipcRenderer} = require('electron')

8 is not defined on the client side, and it throws an error of the form

const {ipcRenderer} = require('electron')

9.

These other JavaScript files are also loaded at runtime at the client, because I place the links at the header of the webpage. So the client knows all the functions that are exported from these other files.

How do I call these functions from these other JavaScript files (such as

const {ipcRenderer} = require('electron')

7. in the main

const {ipcRenderer} = require('electron')

6 file that opens the socket to the server?

asked Sep 27, 2013 at 20:31

5

This is because

function createAddItemWindow() {
    // Create a new window
    addItemWindown = new BrowserWindow({
        width: 300,
        height: 200,
        title: 'Add Item',
        // The lines below solved the issue
        webPreferences: {
            nodeIntegration: true,
            contextIsolation: false
        }
})}

2 does not exist in the browser/client-side JavaScript.

Now you're going to have to make some choices about your client-side JavaScript script management.

You have three options:

1. Use the

   function createAddItemWindow() {

   // Create a new window  
   addItemWindown = new BrowserWindow({  
       width: 300,  
       height: 200,  
       title: 'Add Item',  
       // The lines below solved the issue  
       webPreferences: {  
           nodeIntegration: true,  
           contextIsolation: false  
       }  
   

   })}
   3 tag.
2. Use a CommonJS implementation. It has synchronous dependencies like Node.js
3. Use an asynchronous module definition (AMD) implementation.

CommonJS client side-implementations include (most of them require a build step before you deploy):

1. Browserify - You can use most Node.js modules in the browser. This is my personal favorite.
2. Webpack - Does everything (bundles JavaScript code, CSS, etc.). It was made popular by the surge of React, but it is notorious for its difficult learning curve.
3. Rollup - a new contender. It leverages ES6 modules and includes tree-shaking abilities (removes unused code).

You can read more about my comparison of Browserify vs (deprecated) Component.

AMD implementations include:

1. RequireJS - Very popular amongst client-side JavaScript developers. It is not my taste because of its asynchronous nature.

Note, in your search for choosing which one to go with, you'll read about Bower. Bower is only for package dependencies and is unopinionated on module definitions like CommonJS and AMD.

answered Sep 27, 2013 at 20:48

JP RichardsonJP Richardson

38.9k36 gold badges120 silver badges151 bronze badges

14

I am coming from an Electron environment, where I need IPC communication between a renderer process and the main process. The renderer process sits in an HTML file between script tags and generates the same error.

The line

const {ipcRenderer} = require('electron')

throws the Uncaught ReferenceError: require is not defined

I was able to work around that by specifying Node.js integration as true when the browser window (where this HTML file is embedded) was originally created in the main process.

function createAddItemWindow() {
    // Create a new window
    addItemWindown = new BrowserWindow({
        width: 300,
        height: 200,
        title: 'Add Item',
        // The lines below solved the issue
        webPreferences: {
            nodeIntegration: true,
            contextIsolation: false
        }
})}

That solved the issue for me. The solution was proposed here.

David Burson

3,0378 gold badges33 silver badges57 bronze badges

answered May 28, 2019 at 12:54

6

ES6: In HTML, include the main JavaScript file using attribute

function createAddItemWindow() {
    // Create a new window
    addItemWindown = new BrowserWindow({
        width: 300,
        height: 200,
        title: 'Add Item',
        // The lines below solved the issue
        webPreferences: {
            nodeIntegration: true,
            contextIsolation: false
        }
})}

4 ():

And in the

function createAddItemWindow() {
    // Create a new window
    addItemWindown = new BrowserWindow({
        width: 300,
        height: 200,
        title: 'Add Item',
        // The lines below solved the issue
        webPreferences: {
            nodeIntegration: true,
            contextIsolation: false
        }
})}

5 file, include another file like this:

import { hello } from './module.js';
...
// alert(hello());

Inside the included file (

function createAddItemWindow() {
    // Create a new window
    addItemWindown = new BrowserWindow({
        width: 300,
        height: 200,
        title: 'Add Item',
        // The lines below solved the issue
        webPreferences: {
            nodeIntegration: true,
            contextIsolation: false
        }
})}

6), you must export the function/class that you will import:

export function hello() {
    return "Hello World";
}

A working example is here. More information is here.

answered Jul 2, 2018 at 9:03

Kamil KiełczewskiKamil Kiełczewski

87.6k31 gold badges376 silver badges351 bronze badges

3

Replace all

const {ipcRenderer} = require('electron')

8 statements with

function createAddItemWindow() {
    // Create a new window
    addItemWindown = new BrowserWindow({
        width: 300,
        height: 200,
        title: 'Add Item',
        // The lines below solved the issue
        webPreferences: {
            nodeIntegration: true,
            contextIsolation: false
        }
})}

8 statements. Example:

// Before:
const Web3 = require('web3');
// After:
import Web3 from 'web3';

It worked for me.

answered Jul 31, 2020 at 22:05

3

In my case I used another solution.

As the project doesn't require CommonJS and it must have ES3 compatibility (modules not supported) all you need is just remove all export and import statements from your code, because your tsconfig doesn't contain

"module": "commonjs"

But use import and export statements in your referenced files

import { Utils } from "./utils"
export interface Actions {}

Final generated code will always have(at least for TypeScript 3.0) such lines

"use strict";
exports.__esModule = true;
var utils_1 = require("./utils");
....
utils_1.Utils.doSomething();

answered Aug 3, 2018 at 10:42

ydanilaydanila

4351 gold badge5 silver badges11 bronze badges

2

This worked for me

1. Get the latest release from the RequireJS download page It is the file for RequestJS which is what we will use.
2. Load it into your HTML content like this:

   function createAddItemWindow() {

   // Create a new window  
   addItemWindown = new BrowserWindow({  
       width: 300,  
       height: 200,  
       title: 'Add Item',  
       // The lines below solved the issue  
       webPreferences: {  
           nodeIntegration: true,  
           contextIsolation: false  
       }  
   

   })}
   9

Notes!

Use

0 in

1, not

2

Use

3, not

4

Potherca

13.6k5 gold badges78 silver badges99 bronze badges

answered Sep 27, 2019 at 14:12

eaithyeaithy

2342 silver badges6 bronze badges

2

Even using this won't work. I think the best solution is Browserify:

const {ipcRenderer} = require('electron')

0

answered Aug 26, 2018 at 8:01

const {ipcRenderer} = require('electron')

1

double-beep

5,19317 gold badges35 silver badges42 bronze badges

answered Mar 29, 2021 at 12:37

3

I confirm. We must add:

const {ipcRenderer} = require('electron')

2

For example:

const {ipcRenderer} = require('electron')

3

For me, the problem has been resolved with that.

answered Oct 31, 2020 at 20:00

1

People are asking what is the script tag method. Here it is:

const {ipcRenderer} = require('electron')

4

Or from network:

const {ipcRenderer} = require('electron')

5

You need plugin the right url for your script.

answered Nov 13, 2021 at 4:28

us_davidus_david

4,58136 silver badges31 bronze badges

I was trying to build metronic using webpack. In my package.json I had to remove the "type": "module" section.