Adds webpack-dev-server to houndd --dev

cmds/houndd/main.go

@@ -6,7 +6,9 @@ import (
 	"log"
 	"net/http"
 	"os"
+	"os/exec"
 	"os/signal"
+	"path/filepath"
 	"runtime"
 	"strings"
 	"syscall"
@@ -20,8 +22,10 @@ import (
 const gracefulShutdownSignal = syscall.SIGTERM
 
 var (
-	info_log  *log.Logger
-	error_log *log.Logger
+	info_log   *log.Logger
+	error_log  *log.Logger
+	_, b, _, _ = runtime.Caller(0)
+	basepath   = filepath.Dir(b)
 )
 
 func makeSearchers(cfg *config.Config) (map[string]*searcher.Searcher, bool, error) {
@@ -144,6 +148,18 @@ func main() {
 		host = "localhost" + host
 	}
 
+	if *flagDev {
+		info_log.Printf("[DEV] starting webpack-dev-server at localhost:8080...")
+		webpack := exec.Command("./node_modules/.bin/webpack-dev-server", "--mode", "development")
+		webpack.Dir = basepath + "/../../"
+		webpack.Stdout = os.Stdout
+		webpack.Stderr = os.Stderr
+		err = webpack.Start()
+		if err != nil {
+			error_log.Println(err)
+		}
+	}
+
 	info_log.Printf("running server at http://%s...\n", host)
 
 	if err := runHttp(*flagAddr, *flagDev, &cfg, idx); err != nil {