feat: added deref impl for backend types

src/backend/crossterm.rs

@@ -5,7 +5,10 @@
 //! [`Backend`]: trait.Backend.html
 //! [`CrosstermBackend`]: struct.CrosstermBackend.html
 
-use std::io::{self, Write};
+use std::{
+    io::{self, Write},
+    ops::{Deref, DerefMut},
+};
 
 use crossterm::{
     cursor::{Hide, MoveTo, Show},
@@ -71,6 +74,20 @@ where
     }
 }
 
+impl<W: Write> Deref for CrosstermBackend<W> {
+    type Target = W;
+
+    fn deref(&self) -> &Self::Target {
+        &self.buffer
+    }
+}
+
+impl<W: Write> DerefMut for CrosstermBackend<W> {
+    fn deref_mut(&mut self) -> &mut Self::Target {
+        &mut self.buffer
+    }
+}
+
 impl<W> Backend for CrosstermBackend<W>
 where
     W: Write,

src/backend/termion.rs

@@ -7,6 +7,7 @@
 use std::{
     fmt,
     io::{self, Write},
+    ops::{Deref, DerefMut},
 };
 
 use crate::{
@@ -61,6 +62,20 @@ where
     }
 }
 
+impl<W: Write> Deref for TermionBackend<W> {
+    type Target = W;
+
+    fn deref(&self) -> &Self::Target {
+        &self.stdout
+    }
+}
+
+impl<W: Write> DerefMut for TermionBackend<W> {
+    fn deref_mut(&mut self) -> &mut Self::Target {
+        &mut self.stdout
+    }
+}
+
 impl<W> Backend for TermionBackend<W>
 where
     W: Write,