remove isServerSide from engine and dispatcher

pkg/app/component.go

@@ -298,12 +298,12 @@ func (c *Compo) mount(d Dispatcher) error {
 	root.setParent(c.this)
 	c.root = root
 
-	if mounter, ok := c.self().(Mounter); !c.getDispatcher().isServerSide() && ok {
+	if mounter, ok := c.self().(Mounter); IsClient && ok {
 		c.dispatch(mounter.OnMount)
 		return nil
 	}
 
-	if preRenderer, ok := c.self().(PreRenderer); c.getDispatcher().isServerSide() && ok {
+	if preRenderer, ok := c.self().(PreRenderer); IsServer && ok {
 		c.dispatch(preRenderer.OnPreRender)
 		return nil
 	}

pkg/app/component_test.go

@@ -379,6 +379,12 @@ func TestPreRenderer(t *testing.T) {
 	defer d.Close()
 
 	d.Consume()
+	if IsClient {
+		require.False(t, h.preRenderer)
+		require.Empty(t, d.getCurrentPage().Title())
+		return
+	}
+
 	require.True(t, h.preRenderer)
 	require.Equal(t, "world", d.getCurrentPage().Title())
 }
@@ -390,6 +396,12 @@ func TestNestedPreRenderer(t *testing.T) {
 	defer d.Close()
 
 	d.Consume()
+
+	if IsClient {
+		require.False(t, h.preRenderer)
+		require.Empty(t, d.getCurrentPage().Title())
+		return
+	}
 	require.True(t, h.preRenderer)
 	require.Equal(t, "world", d.getCurrentPage().Title())
 }
@@ -400,6 +412,11 @@ func TestNestedInComponentPreRenderer(t *testing.T) {
 	defer d.Close()
 
 	d.Consume()
+
+	if IsClient {
+		require.Empty(t, d.getCurrentPage().Title())
+		return
+	}
 	require.Equal(t, "bar", d.getCurrentPage().Title())
 }
 

pkg/app/dispatcher.go

@@ -61,7 +61,6 @@ type Dispatcher interface {
 	getCurrentPage() Page
 	getLocalStorage() BrowserStorage
 	getSessionStorage() BrowserStorage
-	isServerSide() bool
 	resolveStaticResource(string) string
 	removeComponentUpdate(Composer)
 	preventComponentUpdate(Composer)
@@ -138,7 +137,6 @@ type ServerDispatcher interface {
 // client environment.
 func NewServerTester(n UI) ServerDispatcher {
 	e := &engine{
-		IsServerSide:   true,
 		ActionHandlers: actionHandlers,
 	}
 	e.init()

pkg/app/engine.go

@@ -17,9 +17,6 @@ type engine struct {
 	// The page.
 	Page Page
 
-	// Reports whether the engine runs on server-side.
-	IsServerSide bool
-
 	// The storage use as local storage.
 	LocalStorage BrowserStorage
 
@@ -286,10 +283,6 @@ func (e *engine) getSessionStorage() BrowserStorage {
 	return e.SessionStorage
 }
 
-func (e *engine) isServerSide() bool {
-	return e.IsServerSide
-}
-
 func (e *engine) resolveStaticResource(path string) string {
 	return e.StaticResourceResolver(path)
 }

pkg/app/http.go

@@ -718,7 +718,6 @@ func (h *Handler) servePage(w http.ResponseWriter, r *http.Request) {
 
 	disp := engine{
 		Page:                   &page,
-		IsServerSide:           true,
 		StaticResourceResolver: h.resolveStaticPath,
 		ActionHandlers:         actionHandlers,
 	}
@@ -740,7 +739,6 @@ func (h *Handler) servePage(w http.ResponseWriter, r *http.Request) {
 	)
 	if err := mount(&disp, body); err != nil {
 		panic(errors.New("mounting pre-rendering container failed").
-			WithTag("server-side", disp.isServerSide()).
 			WithTag("body-type", reflect.TypeOf(disp.Body)).
 			Wrap(err))
 	}