muon/README.md

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----

`Muon` is a lightweight alternative to Electron written in Golang in about ~300 LoC, using Ultralight instead of Chromium. [Ultralight](https://ultralig.ht/) 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`:
```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](https://ultralig.ht/) libraries. Ensure they're either installed on the system, or, in the same folder as your program.