diff --git a/src/api/call_fn.rs b/src/api/call_fn.rs
index 06d8af04..335be57d 100644
--- a/src/api/call_fn.rs
+++ b/src/api/call_fn.rs
@@ -253,9 +253,7 @@ impl Engine {
         let orig_lib_len = global.lib.len();
 
         #[cfg(not(feature = "no_function"))]
-        if ast.has_functions() {
-            global.lib.push(ast.functions().clone());
-        }
+        global.lib.push(ast.shared_lib().clone());
 
         let mut no_this_ptr = Dynamic::NULL;
         let this_ptr = this_ptr.unwrap_or(&mut no_this_ptr);
diff --git a/src/api/eval.rs b/src/api/eval.rs
index 6e2601e4..2c5ffb70 100644
--- a/src/api/eval.rs
+++ b/src/api/eval.rs
@@ -212,9 +212,7 @@ impl Engine {
         let orig_lib_len = global.lib.len();
 
         #[cfg(not(feature = "no_function"))]
-        if ast.has_functions() {
-            global.lib.push(ast.functions().clone());
-        }
+        global.lib.push(ast.shared_lib().clone());
 
         #[cfg(not(feature = "no_module"))]
         let orig_embedded_module_resolver = mem::replace(
diff --git a/src/api/run.rs b/src/api/run.rs
index 3c4d823a..a83a3a73 100644
--- a/src/api/run.rs
+++ b/src/api/run.rs
@@ -116,9 +116,8 @@ impl Engine {
         global.source = ast.source_raw().cloned();
 
         #[cfg(not(feature = "no_function"))]
-        if ast.has_functions() {
-            global.lib.push(ast.functions().clone());
-        }
+        global.lib.push(ast.shared_lib().clone());
+
         #[cfg(not(feature = "no_module"))]
         {
             global.embedded_module_resolver = ast.resolver().cloned();
diff --git a/src/ast/ast.rs b/src/ast/ast.rs
index 26226f6e..71b07669 100644
--- a/src/ast/ast.rs
+++ b/src/ast/ast.rs
@@ -57,12 +57,11 @@ impl fmt::Debug for AST {
         fp.field("body", &self.body.as_slice());
 
         #[cfg(not(feature = "no_function"))]
-        if !self.lib.is_empty() {
-            for (.., fn_def) in self.lib.iter_script_fn() {
-                let sig = fn_def.to_string();
-                fp.field(&sig, &fn_def.body.as_slice());
-            }
+        for (.., fn_def) in self.lib.iter_script_fn() {
+            let sig = fn_def.to_string();
+            fp.field(&sig, &fn_def.body.as_slice());
         }
+
         fp.finish()
     }
 }
@@ -231,23 +230,6 @@ impl AST {
     pub(crate) fn set_doc(&mut self, doc: impl Into<crate::SmartString>) {
         self.doc = doc.into();
     }
-    /// Get the shared [module][crate::Module] containing script-defined functions.
-    #[cfg(not(feature = "no_function"))]
-    #[cfg(not(feature = "internals"))]
-    #[inline(always)]
-    #[must_use]
-    pub(crate) fn functions(&self) -> &crate::SharedModule {
-        &self.lib
-    }
-    /// _(internals)_ Get the shared [module][crate::Module] containing script-defined functions.
-    /// Exported under the `internals` feature only.
-    #[cfg(not(feature = "no_function"))]
-    #[cfg(feature = "internals")]
-    #[inline(always)]
-    #[must_use]
-    pub fn functions(&self) -> &crate::SharedModule {
-        &self.lib
-    }
     /// Get the statements.
     #[cfg(not(feature = "internals"))]
     #[inline(always)]
@@ -756,7 +738,7 @@ impl AST {
         &mut self,
         filter: impl Fn(FnNamespace, FnAccess, &str, usize) -> bool,
     ) -> &mut Self {
-        if !self.lib.is_empty() {
+        if self.has_functions() {
             crate::func::shared_make_mut(&mut self.lib).retain_script_functions(filter);
         }
         self
diff --git a/src/func/call.rs b/src/func/call.rs
index dff6e528..4dcc7ced 100644
--- a/src/func/call.rs
+++ b/src/func/call.rs
@@ -1445,7 +1445,7 @@ impl Engine {
 
         // If new functions are defined within the eval string, it is an error
         #[cfg(not(feature = "no_function"))]
-        if !ast.shared_lib().is_empty() {
+        if ast.has_functions() {
             return Err(crate::PERR::WrongFnDefinition.into());
         }
 
diff --git a/src/func/script.rs b/src/func/script.rs
index cc733691..55ba1361 100644
--- a/src/func/script.rs
+++ b/src/func/script.rs
@@ -118,9 +118,7 @@ impl Engine {
                 .cloned()
                 .for_each(|(n, m)| global.push_import(n, m));
 
-            if !lib.is_empty() {
-                global.lib.push(lib.clone());
-            }
+            global.lib.push(lib.clone());
 
             Some(mem::replace(&mut global.constants, constants.clone()))
         } else {
diff --git a/src/module/mod.rs b/src/module/mod.rs
index e468cfa0..91be1a53 100644
--- a/src/module/mod.rs
+++ b/src/module/mod.rs
@@ -543,14 +543,13 @@ impl Module {
     #[inline]
     #[must_use]
     pub fn is_empty(&self) -> bool {
-        self.indexed
-            && !self.contains_indexed_global_functions
+        !self.contains_indexed_global_functions
             && self.functions.is_empty()
-            && self.all_functions.as_ref().map_or(true, |m| m.is_empty())
             && self.variables.as_ref().map_or(true, |m| m.is_empty())
-            && self.all_variables.as_ref().map_or(true, |m| m.is_empty())
             && self.modules.as_ref().map_or(true, |m| m.is_empty())
             && self.type_iterators.as_ref().map_or(true, |t| t.is_empty())
+            && self.all_functions.as_ref().map_or(true, |m| m.is_empty())
+            && self.all_variables.as_ref().map_or(true, |m| m.is_empty())
             && self
                 .all_type_iterators
                 .as_ref()
diff --git a/src/types/fn_ptr.rs b/src/types/fn_ptr.rs
index c193749e..900b738b 100644
--- a/src/types/fn_ptr.rs
+++ b/src/types/fn_ptr.rs
@@ -154,9 +154,7 @@ impl FnPtr {
         let global = &mut GlobalRuntimeState::new(engine);
 
         #[cfg(not(feature = "no_function"))]
-        if _ast.has_functions() {
-            global.lib.push(_ast.functions().clone());
-        }
+        global.lib.push(_ast.shared_lib().clone());
 
         let ctx = (engine, self.fn_name(), None, &*global, Position::NONE).into();