main: use wasm-fetch

go.mod

@@ -2,7 +2,10 @@ module example.com/game
 
 go 1.22.3
 
-require github.com/hajimehoshi/ebiten/v2 v2.7.4
+require (
+	github.com/hajimehoshi/ebiten/v2 v2.7.4
+	marwan.io/wasm-fetch v0.1.0
+)
 
 require (
 	github.com/ebitengine/gomobile v0.0.0-20240518074828-e86332849895 // indirect

go.sum

@@ -14,3 +14,5 @@ golang.org/x/sync v0.7.0 h1:YsImfSBoP9QPYL0xyKJPq0gcaJdG3rInoqxTWbfQu9M=
 golang.org/x/sync v0.7.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
 golang.org/x/sys v0.20.0 h1:Od9JTbYCk261bKm4M/mw7AklTlFYIa0bIp9BgSm1S8Y=
 golang.org/x/sys v0.20.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+marwan.io/wasm-fetch v0.1.0 h1:0kKeCsry7IQfPmxj78FUWtO6qwXIaQqMmZbzbZz2rkw=
+marwan.io/wasm-fetch v0.1.0/go.mod h1:PlaZmevjPJGIy/BaqMtVjUKvrA8CgrDh+aomnuhmTO8=

main.go

@@ -1,16 +1,18 @@
 package main
 
 import (
+	"bytes"
 	"fmt"
 	"image/color"
 	"io"
-	"net/http"
 	"os"
 	"path/filepath"
 	"runtime"
 
 	"github.com/hajimehoshi/ebiten/v2"
 	"github.com/hajimehoshi/ebiten/v2/ebitenutil"
+
+	fetch "marwan.io/wasm-fetch"
 )
 
 type game struct {
@@ -48,12 +50,11 @@ func main() {
 func open(name string) (io.ReadCloser, error) {
 	name = filepath.Clean(name)
 	if runtime.GOOS == "js" {
-		// TODO: use more lightweight method such as marwan-at-work/wasm-fetch
-		resp, err := http.Get(name)
+		resp, err := fetch.Fetch(name, &fetch.Opts{})
 		if err != nil {
 			return nil, err
 		}
-		return resp.Body, nil
+		return io.NopCloser(bytes.NewReader(resp.Body)), nil
 	}
 
 	return os.Open(name)