New Svelte NodeGui Allows Creating Native Desktop Applications with Qt and Svelte

New Svelte NodeGui Allows Creating Native Desktop Applications with Qt and Svelte. Jamie Birch recently announced Svelte NodeGui, a framework for developing desktop applications on Windows, Linux, and MacOS. A lighter alternative to Electron, Svelte NodeGui lets developers write their applications with the Svelte front-end framework and compiler.

Jamie Birch recently  announced Svelte NodeGui, a framework for developing desktop applications on Windows, Linux, and MacOS. A lighter alternative to Electron, Svelte NodeGui lets developers write their applications with the  Svelte front-end framework and compiler, the  Qt widget toolkit, and a subset of HTML and CSS.

Svelte NodeGui documentation presented the rationale and benefits behind the new framework as follows:

Svelte NodeGui is a Svelte renderer for  NodeGui, which is an efficient JavaScript binding to a cross-platform graphical user interface (GUI) library Qt. Qt is one of the most mature and efficient libraries for building desktop applications. This enabled Svelte NodeGui to be extremely memory and CPU efficient as compared to other popular Javascript Desktop GUI solutions. A hello world app built with Svelte NodeGui runs on less than 20Mb of memory.

Some developers have reported the size of a basic hello world Electron application to be  as high as 115 MB or  275 MB. Svelte NodeGui manages to compile smaller executables with a better memory consumption by not shipping the Chromium web browser together with the web application.

Conversely, Svelte NodeGui applications cannot leverage browser APIs nor the full extent of HTML and CSS. A Svelte NodeGui app is a Node.js app whose user interface is made of Qt widgets (e.g., QMainWindow, QCheckBox) that can be styled with the subset of CSS supported by  Qt’s stylesheet syntax and are laid out with  Flexbox — a web browser’s one-dimensional layout method. Qt widgets’ surface area may be lower than that of  HTML native elements, which effectively limits developers to using a Qt-supported subset of HTML. Svelte NodeGui ships with 13 tags or UI components, including buttons, image tags, editable text areas, progress bars, or native OS windows.

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