1 files changed, 12 insertions, 0 deletions
diff --git a/twitch_api/src/sync/waiter.rs b/twitch_api/src/sync/waiter.rs
new file mode 100644
index 0000000..1005e3d
--- /dev/null
+++ b/twitch_api/src/sync/waiter.rs
@@ -0,0 +1,12 @@
+use futures::Future;
+use futures::future::{Shared, SharedError};
+use crate::error::ConditionError;
+
+pub trait Waiter {
+    type Item: Default;
+    type Error: From<SharedError<ConditionError>>; 
+
+    fn blocked(&self) -> bool;
+    fn condition(&self) 
+        -> Shared<Box<Future<Item=(), Error=ConditionError> + Send>>;
+}