diff --git a/examples/benchmark.rs b/examples/benchmark.rs
index 4d45b4f..2a73e05 100644
--- a/examples/benchmark.rs
+++ b/examples/benchmark.rs
@@ -1,7 +1,7 @@
-use std::{sync::mpsc, sync::Arc, thread};
-
 use osui::prelude::*;
 
+use std::{sync::mpsc, thread};
+
 pub fn main() {
     let engine = Arc::new(Benchmark::new(Console::new()));
 
diff --git a/examples/hello_world.rs b/examples/hello_world.rs
index 0a9850d..ecef5bc 100644
--- a/examples/hello_world.rs
+++ b/examples/hello_world.rs
@@ -1,5 +1,3 @@
-use std::sync::Arc;
-
 use osui::prelude::*;
 
 pub fn main() {
diff --git a/examples/simple_benchmark.rs b/examples/simple_benchmark.rs
index e902b10..1472f44 100644
--- a/examples/simple_benchmark.rs
+++ b/examples/simple_benchmark.rs
@@ -1,5 +1,3 @@
-use std::sync::Arc;
-
 use osui::prelude::*;
 
 pub fn main() {
diff --git a/examples/simple_example.rs b/examples/simple_example.rs
index 20dc025..dd3c5fc 100644
--- a/examples/simple_example.rs
+++ b/examples/simple_example.rs
@@ -1,5 +1,3 @@
-use std::sync::Arc;
-
 use osui::prelude::*;
 
 pub fn main() {
diff --git a/src/engine/mod.rs b/src/engine/mod.rs
index b55f187..2ee53e5 100644
--- a/src/engine/mod.rs
+++ b/src/engine/mod.rs
@@ -15,7 +15,7 @@ pub trait Engine<Output = ()> {
     fn init<C: ComponentImpl + 'static>(&self, component: C) -> Arc<Context>;
     fn render(&self, cx: &Arc<Context>);
     fn render_delay(&self) {
-        std::thread::sleep(std::time::Duration::from_millis(16))
+        crate::sleep(16);
     }
 
     fn render_view(&self, area: &Area, view: &View) -> DrawContext;
diff --git a/src/lib.rs b/src/lib.rs
index 93448c1..0bb0a1d 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -14,8 +14,9 @@ pub mod prelude {
     pub use crate::frontend::*;
     pub use crate::render::*;
     pub use crate::state::*;
-    pub use crate::View;
+    pub use crate::{sleep, Error, Result, View, ViewWrapper};
     pub use osui_macros::{component, rsx};
+    pub use std::sync::{Arc, Mutex};
 }
 
 pub type View = Arc<dyn Fn(&mut DrawContext) + Send + Sync>;
@@ -32,3 +33,7 @@ impl From<std::sync::PoisonError<std::sync::MutexGuard<'_, bool>>> for Error {
         Error::PoisonError
     }
 }
+
+pub fn sleep(delay_ms: u64) {
+    std::thread::sleep(std::time::Duration::from_millis(delay_ms));
+}