go-pwa

README

go-pwa

Notice: this is a fork of maxence-charriere/go-app.

go-pwa is a package for building progressive web apps (PWA) with the Go programming language (Golang) and WebAssembly (Wasm).

Shaping a UI is done by using a declarative syntax that creates and compose HTML elements only by using the Go programing language.

It uses Go HTTP standard model.

An app created with go-pwa can out of the box runs in its own window, supports offline mode, and is SEO friendly.

Install

go-pwa requirements:

• Go 1.18 or newer
• Go module

go mod init
go get -u github.com/carmel/go-pwa

Declarative syntax

go-pwa uses a declarative syntax so you can write reusable component-based UI elements just by using the Go programming language.

Here is a Hello World component that takes an input and displays its value in its title:

type hello struct {
	app.Compo

	name string
}

func (h *hello) Render() app.UI {
	return app.Div().Body(
		app.H1().Body(
			app.Text("Hello, "),
			app.If(h.name != "",
				app.Text(h.name),
			).Else(
				app.Text("World!"),
			),
		),
		app.P().Body(
			app.Input().
				Type("text").
				Value(h.name).
				Placeholder("What is your name?").
				AutoFocus(true).
				OnChange(h.ValueTo(&h.name)),
		),
	)
}

Standard HTTP

Apps created with go-pwa complies with Go standard HTTP package interfaces.

func main() {
	// Components routing:
	app.Route("/", &hello{})
	app.Route("/hello", &hello{})
	app.RunWhenOnBrowser()

	// HTTP routing:
	http.Handle("/", &app.Handler{
		Name:        "Hello",
		Description: "An Hello World! example",
	})

	if err := http.ListenAndServe(":8000", nil); err != nil {
		log.Fatal(err)
	}
}

Sample

• Lofimusic.app
• Murlok.io
• liwasc
• go-pwa Docs