diff --git a/crates/frontend/src/lib.rs b/crates/frontend/src/lib.rs
index c4b2fb3..4a98168 100644
--- a/crates/frontend/src/lib.rs
+++ b/crates/frontend/src/lib.rs
@@ -26,6 +26,7 @@ use crate::{diagnostic::DynDiagnostic, workspace::Workspace};
 pub mod ast;
 pub mod diagnostic;
 pub mod editor;
+pub mod resolve;
 pub mod workspace;
 
 pub mod prelude {
diff --git a/crates/frontend/src/resolve.rs b/crates/frontend/src/resolve.rs
new file mode 100644
index 0000000..6cdcfdf
--- /dev/null
+++ b/crates/frontend/src/resolve.rs
@@ -0,0 +1,51 @@
+// Copyright (C) 2025-2026 Marceline Cramer
+// SPDX-License-Identifier: AGPL-3.0-or-later
+//
+// This file is part of Kerolox.
+//
+// Kerolox is free software: you can redistribute it and/or modify it under
+// the terms of the GNU Affero General Public License as published by the Free
+// Software Foundation, either version 3 of the License, or (at your option) any
+// later version.
+//
+// Kerolox is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+// FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for
+// more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with Kerolox. If not, see <https://www.gnu.org/licenses/>.
+
+use std::collections::BTreeMap;
+
+use salsa::Update;
+
+use crate::prelude::*;
+
+#[salsa::tracked]
+pub struct Namespace<'db> {
+    #[returns(ref)]
+    pub items: BTreeMap<String, NamespaceItem<'db>>,
+}
+
+#[derive(Clone, PartialEq, Eq, Hash, Update)]
+pub enum NamespaceItem<'db> {
+    File(workspace::File),
+    Namespace(Namespace<'db>),
+    Relation(ast::Relation<'db>),
+    TypeAlias(ast::TypeAlias<'db>),
+    Unknown,
+}
+
+impl<'db> NamespaceItem<'db> {
+    /// Returns a user-readable string identifier for what kind of item this is.
+    pub fn kind(&self) -> &'static str {
+        match self {
+            NamespaceItem::File(_) => "file",
+            NamespaceItem::Namespace(_) => "namespace",
+            NamespaceItem::Relation(_) => "relation",
+            NamespaceItem::TypeAlias(_) => "type alias",
+            NamespaceItem::Unknown => "unknown",
+        }
+    }
+}
diff --git a/crates/frontend/src/workspace.rs b/crates/frontend/src/workspace.rs
index 8797577..e6d732f 100644
--- a/crates/frontend/src/workspace.rs
+++ b/crates/frontend/src/workspace.rs
@@ -19,7 +19,7 @@
 // TODO: document module
 
 use std::{
-    collections::{BTreeMap, HashMap},
+    collections::HashMap,
     fmt::{Debug, Display},
     ops::Deref,
     str::FromStr,
@@ -40,34 +40,6 @@ pub struct Workspace {
     pub stdlib: HashMap<String, File>,
 }
 
-#[salsa::tracked]
-pub struct Namespace<'db> {
-    #[returns(ref)]
-    pub items: BTreeMap<String, NamespaceItem<'db>>,
-}
-
-#[derive(Clone, PartialEq, Eq, Hash, Update)]
-pub enum NamespaceItem<'db> {
-    File(File),
-    Namespace(Namespace<'db>),
-    Relation(ast::Relation<'db>),
-    TypeAlias(ast::TypeAlias<'db>),
-    Unknown,
-}
-
-impl<'db> NamespaceItem<'db> {
-    /// Returns a user-readable string identifier for what kind of item this is.
-    pub fn kind(&self) -> &'static str {
-        match self {
-            NamespaceItem::File(_) => "file",
-            NamespaceItem::Namespace(_) => "namespace",
-            NamespaceItem::Relation(_) => "relation",
-            NamespaceItem::TypeAlias(_) => "type alias",
-            NamespaceItem::Unknown => "unknown",
-        }
-    }
-}
-
 #[salsa::input]
 #[derive(Debug)]
 pub struct File {