diff --git a/crates/ra_ide_api/src/imp.rs b/crates/ra_ide_api/src/diagnostics.rs
similarity index 80%
rename from crates/ra_ide_api/src/imp.rs
rename to crates/ra_ide_api/src/diagnostics.rs
index a351c93733..c6ca91af89 100644
--- a/crates/ra_ide_api/src/imp.rs
+++ b/crates/ra_ide_api/src/diagnostics.rs
@@ -1,13 +1,8 @@
-use hir::{
-    self, Problem, source_binder
-};
-use ra_ide_api_light::{self, LocalEdit, Severity};
+use hir::{Problem, source_binder};
+use ra_ide_api_light::Severity;
 use ra_db::SourceDatabase;
 
-use crate::{
-    db, Diagnostic, FileId, FilePosition, FileSystemEdit,
-    SourceChange, SourceFileEdit,
-};
+use crate::{db, Diagnostic, FileId, FileSystemEdit, SourceChange};
 
 impl db::RootDatabase {
     pub(crate) fn diagnostics(&self, file_id: FileId) -> Vec<Diagnostic> {
@@ -74,20 +69,3 @@ impl db::RootDatabase {
         res
     }
 }
-
-impl SourceChange {
-    pub(crate) fn from_local_edit(file_id: FileId, edit: LocalEdit) -> SourceChange {
-        let file_edit = SourceFileEdit {
-            file_id,
-            edit: edit.edit,
-        };
-        SourceChange {
-            label: edit.label,
-            source_file_edits: vec![file_edit],
-            file_system_edits: vec![],
-            cursor_position: edit
-                .cursor_position
-                .map(|offset| FilePosition { offset, file_id }),
-        }
-    }
-}
diff --git a/crates/ra_ide_api/src/lib.rs b/crates/ra_ide_api/src/lib.rs
index f5c1aa0369..312b11a826 100644
--- a/crates/ra_ide_api/src/lib.rs
+++ b/crates/ra_ide_api/src/lib.rs
@@ -14,7 +14,6 @@
 #![recursion_limit = "128"]
 
 mod db;
-mod imp;
 pub mod mock_analysis;
 mod symbol_index;
 mod navigation_target;
@@ -32,6 +31,7 @@ mod parent_module;
 mod references;
 mod impls;
 mod assists;
+mod diagnostics;
 
 #[cfg(test)]
 mod marks;
@@ -58,7 +58,7 @@ pub use crate::{
     change::{AnalysisChange, LibraryData},
 };
 pub use ra_ide_api_light::{
-    Fold, FoldKind, HighlightedRange, Severity, StructureNode,
+    Fold, FoldKind, HighlightedRange, Severity, StructureNode, LocalEdit,
     LineIndex, LineCol, translate_offset_with_edit,
 };
 pub use ra_db::{
@@ -399,6 +399,23 @@ impl Analysis {
     }
 }
 
+impl SourceChange {
+    pub(crate) fn from_local_edit(file_id: FileId, edit: LocalEdit) -> SourceChange {
+        let file_edit = SourceFileEdit {
+            file_id,
+            edit: edit.edit,
+        };
+        SourceChange {
+            label: edit.label,
+            source_file_edits: vec![file_edit],
+            file_system_edits: vec![],
+            cursor_position: edit
+                .cursor_position
+                .map(|offset| FilePosition { offset, file_id }),
+        }
+    }
+}
+
 #[test]
 fn analysis_is_send() {
     fn is_send<T: Send>() {}