Fix encapsulated environment in module functions.

src/lib.rs

@@ -259,6 +259,11 @@ pub use ast::{
     AST_OPTION_FLAGS::*,
 };
 
+#[cfg(feature = "internals")]
+#[cfg(not(feature = "no_module"))]
+#[cfg(not(feature = "no_function"))]
+pub use ast::EncapsulatedEnviron;
+
 #[cfg(feature = "internals")]
 #[cfg(not(feature = "no_float"))]
 pub use ast::FloatWrapper;