chore: add `copyright_checker` tool and add the missing copyright (#17285)

1 files changed, 4 insertions, 2 deletions

diff --git a/ext/broadcast_channel/in_memory_broadcast_channel.rs b/ext/broadcast_channel/in_memory_broadcast_channel.rs
index 595a7cc13..7c9c68ae0 100644
--- a/ext/broadcast_channel/in_memory_broadcast_channel.rs
+++ b/ext/broadcast_channel/in_memory_broadcast_channel.rs
@@ -1,14 +1,16 @@
 // Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
 
-use crate::BroadcastChannel;
+use std::sync::Arc;
+
 use async_trait::async_trait;
 use deno_core::error::AnyError;
 use deno_core::parking_lot::Mutex;
-use std::sync::Arc;
 use tokio::sync::broadcast;
 use tokio::sync::mpsc;
 use uuid::Uuid;
 
+use crate::BroadcastChannel;
+
 #[derive(Clone)]
 pub struct InMemoryBroadcastChannel(Arc<Mutex<broadcast::Sender<Message>>>);