// renderer.js window.electron.ipcRenderer.on('download-progress', (event, progressObj) => { const progressBar = document.getElementById('update-progress-bar'); const progressText = document.getElementById('update-progress-text'); progressBar.value = progressObj.percent; progressText.innerText = `Downloading: ${Math.floor(progressObj.percent)}%`; }); Use code with caution. Common Pitfalls and Tips
: electron-updater is designed to work in packaged applications. It will often fail to trigger events like download-progress during development (using npm start ) because no update metadata (like app-update.yml ) is available.
The autoUpdater typically runs in the Main Process. You must listen for the event and then communicate that data to your renderer process (UI) via Inter-Process Communication (IPC) . javascript
In your frontend, you listen for the IPC message and update your DOM or state. javascript
: The completion percentage, typically as a float (e.g., 85.5 ). transferred : The total number of bytes downloaded so far. total : The total size of the update package in bytes. Basic Implementation in the Main Process
This event is emitted by the autoUpdater module while an update is being downloaded. It provides a real-time stream of data about the download's state, allowing you to update your UI with progress bars, speed indicators, or estimated time remaining. The Progress Object Structure
// renderer.js window.electron.ipcRenderer.on('download-progress', (event, progressObj) => { const progressBar = document.getElementById('update-progress-bar'); const progressText = document.getElementById('update-progress-text'); progressBar.value = progressObj.percent; progressText.innerText = `Downloading: ${Math.floor(progressObj.percent)}%`; }); Use code with caution. Common Pitfalls and Tips
: electron-updater is designed to work in packaged applications. It will often fail to trigger events like download-progress during development (using npm start ) because no update metadata (like app-update.yml ) is available. electron-updater download-progress
The autoUpdater typically runs in the Main Process. You must listen for the event and then communicate that data to your renderer process (UI) via Inter-Process Communication (IPC) . javascript // renderer
In your frontend, you listen for the IPC message and update your DOM or state. javascript The autoUpdater typically runs in the Main Process
: The completion percentage, typically as a float (e.g., 85.5 ). transferred : The total number of bytes downloaded so far. total : The total size of the update package in bytes. Basic Implementation in the Main Process
This event is emitted by the autoUpdater module while an update is being downloaded. It provides a real-time stream of data about the download's state, allowing you to update your UI with progress bars, speed indicators, or estimated time remaining. The Progress Object Structure