muon/README.md

---

Muon is a lightweight alternative to Electron written in Golang in about ~300 LoC, using Ultralight instead of Chromium. Ultralight is a corss-platform WebKit rewrite using the GPU to target embeded desktop applications that resulted in a fast, lightweight, and low-memory HTML UI solution that blends the power of Chromium with the small footprint of Native UI.

Features

• Full JS to Go interop
• GPU based rendering
• Cross-platform
• Hot-reloading
• Superior disk size + memory & cpu usage

	Muon	Electron
CPU	0.0%	1.2%
MEM	26.0 MB	201.7 MB
SIZE	42 MB	136 MB

Example

From examples/create-react-app/main.go:

package main

import (
	"github.com/ImVexed/muon"

	"cra-go/webfiles"
	"net/http"
)

func main() {
    // Any static asset packer of your liking (ex. fileb0x)
	fileHandler := http.FileServer(webfiles.HTTP)

	cfg := &muon.Config{
		Title:  "Hello, World!",
		Height: 500,
		Width:  500,
		Hint:   2 | 4,
	}

	m := muon.New(cfg, fileHandler)

    // Expose our `add` function to the JS runtime
	m.Bind("add", add)

    // Show the Window and start the Runtime
	if err := m.Start(); err != nil {
		panic(err)
	}
}

// Muon automatically handles interop to and from the JS runtime
func add(a float64, b float64) float64 {
	return a + b
}

FAQ

Q: How are JS types translated to Go types?

• JS: Boolean Go: bool
• JS: Number Go: float64
• JS: String Go: string
• JS: Object Go: struct via JSON

Q: I get exit status 3221225781 when I try to run my program

• Your program likely can't find the Ultralight libraries. Ensure they're either installed on the system, or, in the same folder as your program.