Create Sapper Electron App

The boilerplate code to get started creating Cross-platform Desktop Apps with Electron and Sapper as front-end technology.

✒️ Overview

The aim of this project is to provide Web Developers using sapper the power to create cross-platform desktop apps using electron.

🧐 What packages does the project use?

electron enables you to create desktop applications with pure JavaScript by providing a runtime with rich native (operating system) APIs. You could see it as a variant of the Node.js runtime that is focused on desktop applications instead of web servers.

electron-builder is used as a complete solution to package and build a ready for distribution (supports Numerous target formats) Electron app with "auto update" support out of the box.

electron-serve is used for Static file serving for Electron apps.

sapper is a framework for building web applications of all sizes, with a beautiful development experience and flexible filesystem-based routing. Unlike single-page apps, Sapper doesn't compromise on SEO, progressive enhancement or the initial load experience — but unlike traditional server-rendered apps, navigation is instantaneous for that app-like feel.

concurrently is used to run multiple commands concurrently.

wait-on is used as it can wait for sockets, and http(s) resources to become available.

🚀 Getting Started

Note: If you wish to use npm over yarn then modify package.json by replacing yarn with npm in electron-dev and preelectron-pack scripts. But I strongly recommend using yarn as it is a better choice when compared to npm.

🤓 Use this boilerplate

# Clone the Project

# Use degit scaffolding tool
$ npx degit soulehshaikh99/create-sapper-electron-app create-sapper-electron-app
# or GitHub CLI Users
$ gh repo clone https://github.com/soulehshaikh99/create-sapper-electron-app.git
# or Normal Git Users
$ git clone https://github.com/soulehshaikh99/create-sapper-electron-app.git

# Switch location to the cloned directory
$ cd create-sapper-electron-app

# Install dependencies
$ yarn # or npm install

# Run your app
$ yarn electron-dev # or npm run electron-dev

# Package Your App
$ yarn electron-pack # or npm run electron-pack

💫 Create this boilerplate from scratch (Manual Setup)

1) Use degit scaffolding tool to get started with sapper-template.

$ npx degit "sveltejs/sapper-template#webpack" create-sapper-electron-app

2) Switch to project directory

$ cd create-sapper-electron-app

3) Move all dependencies to devDependencies using IDE / Text Editor

# It should look something like this
"dependencies": {},
"devDependencies": {
  "compression": "^1.7.1",
  "npm-run-all": "^4.1.5",
  "polka": "next",
  "sapper": "^0.28.0",
  "sirv": "^1.0.0",
  "svelte": "^3.17.3",
  "svelte-loader": "^2.9.0",
  "webpack": "^4.7.0",
  "webpack-modules": "^1.0.0"
}

4) Install Dependencies

$ yarn # or npm install

5) Install Development Dependencies

$ yarn add --dev electron electron-builder wait-on concurrently
# npm i -D electron electron-builder wait-on concurrently

6) Install Production Dependency

$ yarn add electron-serve # or npm i electron-serve

7) Your dependencies should look something like this

"dependencies": {
  "electron-serve": "^1.0.0"
},
"devDependencies": {
  "compression": "^1.7.1",
  "concurrently": "^5.3.0",
  "electron": "^9.2.1",
  "electron-builder": "^22.8.0",
  "npm-run-all": "^4.1.5",
  "polka": "next",
  "sapper": "^0.28.0",
  "sirv": "^1.0.0",
  "svelte": "^3.17.3",
  "svelte-loader": "^2.9.0",
  "wait-on": "^5.2.0",
  "webpack": "^4.7.0",
  "webpack-modules": "^1.0.0"
}

8) Download the app icon

favicon.png | logo-192.png | logo-512.png and place it in the static directory, overwriting the original ones.

9) Create main.js file (serves as entry point for Electron App's Main Process)

# Windows Users
$ fsutil file createnew main.js 0
# notepad main.js 

# Linux and macOS Users
$ touch main.js

10) Paste the below code in main.js file

// Modules to control application life and create native browser window
const { app, BrowserWindow, dialog } = require('electron');
const path = require('path');
const serve = require('electron-serve');
const loadURL = serve({ directory: '__sapper__/export' });

// Keep a global reference of the window object, if you don't, the window will
// be closed automatically when the JavaScript object is garbage collected.
let mainWindow;

function isDev() {
    return !app.isPackaged;
}

function createWindow() {
    // Create the browser window.
    mainWindow = new BrowserWindow({
        width: 800,
        height: 600,
        webPreferences: {
            nodeIntegration: true
        },
        // Use this in development mode.
        icon: isDev() ? path.join(process.cwd(), 'static/logo-512.png') : path.join(__dirname, '__sapper__/export/logo-512.png'),
        // Use this in production mode.
        // icon: path.join(__dirname, '__sapper__/export/logo-512.png'),
        show: false
    });

    // This block of code is intended for development purpose only.
    // Delete this entire block of code when you are ready to package the application.
    if (isDev()) {
        mainWindow.loadURL('http://localhost:3000/');
    } else {
        loadURL(mainWindow);
    }
    
    // Uncomment the following line of code when app is ready to be packaged.
    // loadURL(mainWindow);

    // Open the DevTools and also disable Electron Security Warning.
    // process.env['ELECTRON_DISABLE_SECURITY_WARNINGS'] = true;
    // mainWindow.webContents.openDevTools();

    // Emitted when the window is closed.
    mainWindow.on('closed', function () {
        // Dereference the window object, usually you would store windows
        // in an array if your app supports multi windows, this is the time
        // when you should delete the corresponding element.
        mainWindow = null
    });

    // Emitted when the window is ready to be shown
    // This helps in showing the window gracefully.
    mainWindow.once('ready-to-show', () => {
        mainWindow.show()
    });
}

// This method will be called when Electron has finished
// initialization and is ready to create browser windows.
// Some APIs can only be used after this event occurs.
app.on('ready', createWindow);

// Quit when all windows are closed.
app.on('window-all-closed', function () {
    // On macOS it is common for applications and their menu bar
    // to stay active until the user quits explicitly with Cmd + Q
    if (process.platform !== 'darwin') app.quit()
});

app.on('activate', function () {
    // On macOS it's common to re-create a window in the app when the
    // dock icon is clicked and there are no other windows open.
    if (mainWindow === null) createWindow()
});
// In this file you can include the rest of your app's specific main process
// code. You can also put them in separate files and require them here.

11) Update the script section of package.json

# Add this scripts
"electron": "wait-on http://localhost:3000 && electron .",
"electron-dev": "concurrently \"yarn run dev\" \"yarn run electron\"",
"preelectron-pack": "yarn run export",
"electron-pack": "electron-builder"

# You should end up with something similar
"scripts": {
  "dev": "sapper dev",
  "build": "sapper build",
  "export": "sapper export",
  "start": "node __sapper__/build",
  "cy:run": "cypress run",
  "cy:open": "cypress open",
  "test": "run-p --race dev cy:run",
  "electron": "wait-on http://localhost:3000 && electron .",
  "electron-dev": "concurrently \"yarn run dev\" \"yarn run electron\"",
  "preelectron-pack": "yarn run export",
  "electron-pack": "electron-builder"
}

12) Add the following configuration in package.json

Note: build configuration is used by electron-builder, modify it if you wish to add more packaging and native distribution options for different OS Platforms.

"name": "create-sapper-electron-app",   # By default it is TODO
"main": "main.js",  # Application Entry Point, please verify entry point is set to main.js 
"build": {
  "icon": "static/logo-512.png",
  "productName": "Sapper and Electron App",
  "files": [
    "__sapper__/export/**/*",
    "main.js"
  ],
  "win": {},  # Windows Specific Configuration
  "linux": {},  # Linux Specific Configuration
  "mac": {}  # MacOs Specific Configuration
}

14) Test drive your app

# Run your app
$ yarn electron-dev # or npm run electron-dev

# Package Your App
$ yarn electron-pack # or npm run electron-pack

💯 Result

😍 Made with ❤️ from Souleh

📋 License:

Licensed under the MIT License.