diff --git a/src/preprocessors/preprocessor.ts b/src/preprocessors/preprocessor.ts
index 14d276a..6c54fe9 100644
--- a/src/preprocessors/preprocessor.ts
+++ b/src/preprocessors/preprocessor.ts
@@ -26,7 +26,7 @@ export function preprocessor(code: string, options: PrettierOptions): string {
     traverse(ast, {
         ImportDeclaration(path: NodePath<ImportDeclaration>) {
             const tsModuleParent = path.findParent((p) =>
-                isTSModuleDeclaration(p),
+                isTSModuleDeclaration(p.node),
             );
             if (!tsModuleParent) {
                 allOriginalImportNodes.push(path.node);
diff --git a/src/utils/get-code-from-ast.ts b/src/utils/get-code-from-ast.ts
index bf27c77..bfc4f73 100644
--- a/src/utils/get-code-from-ast.ts
+++ b/src/utils/get-code-from-ast.ts
@@ -67,8 +67,10 @@ export const getCodeFromAst = ({
         start: 0,
         end: 0,
         loc: {
-            start: { line: 0, column: 0 },
-            end: { line: 0, column: 0 },
+            start: { line: 0, column: 0, index: 0 },
+            end: { line: 0, column: 0, index: 0 },
+            filename: '',
+            identifierName: '',
         },
     });
 
diff --git a/src/utils/get-comment-registry.ts b/src/utils/get-comment-registry.ts
index 33b9ac0..e85671e 100644
--- a/src/utils/get-comment-registry.ts
+++ b/src/utils/get-comment-registry.ts
@@ -429,6 +429,8 @@ export function attachCommentsToOutputNodes(
                     ...firstImport.loc?.end,
                     line: firstImport.loc?.end.line + commentHeight,
                 },
+                filename: '',
+                identifierName: ''
             };
 
             const moveDist =
@@ -536,8 +538,10 @@ function ensureEmptyStatementAtFront(outputNodes: ImportOrLine[]) {
     }
     const dummy = emptyStatement();
     dummy.loc = {
-        start: { line: 0, column: 0 },
-        end: { line: 0, column: 0 },
+        start: { line: 0, column: 0, index: 0 },
+        end: { line: 0, column: 0, index: 0 },
+        filename: '',
+        identifierName: '',
     };
     outputNodes.unshift(dummy);
 }
diff --git a/src/utils/get-import-nodes.ts b/src/utils/get-import-nodes.ts
index 4bcc0f6..9825382 100644
--- a/src/utils/get-import-nodes.ts
+++ b/src/utils/get-import-nodes.ts
@@ -15,7 +15,7 @@ export const getImportNodes = (
     traverse(ast, {
         ImportDeclaration(path: NodePath<ImportDeclaration>) {
             const tsModuleParent = path.findParent((p) =>
-                isTSModuleDeclaration(p),
+                isTSModuleDeclaration(p.node),
             );
             if (!tsModuleParent) {
                 importNodes.push(path.node);