diff --git a/automock/mock-generate/src/generate/generateExportFunction.ts b/automock/mock-generate/src/generate/generateExportFunction.ts
index 1975bd8..d198950 100644
--- a/automock/mock-generate/src/generate/generateExportFunction.ts
+++ b/automock/mock-generate/src/generate/generateExportFunction.ts
@@ -27,6 +27,9 @@ import { getCallbackStatement, getReturnStatement } from './generateCommonUtil';
  * @returns
  */
 export function generateExportFunction(functionEntity: FunctionEntity, sourceFile: SourceFile, mockApi: string): string {
+  if (functionEntity.functionName !== 'getContext') {
+    return '';
+  }
   let functionBody = '';
   functionBody = `global.${functionEntity.functionName} = function (...args) {`;
   functionBody += `console.warn('The ${functionEntity.functionName} interface in the Previewer is a mocked implementation and may behave differently than on a real device.');\n`;
diff --git a/automock/mock-generate/src/generate/generateInterfaceDeclaration.ts b/automock/mock-generate/src/generate/generateInterfaceDeclaration.ts
index 3403b36..a41c4e5 100644
--- a/automock/mock-generate/src/generate/generateInterfaceDeclaration.ts
+++ b/automock/mock-generate/src/generate/generateInterfaceDeclaration.ts
@@ -78,7 +78,11 @@ export function generateInterfaceDeclaration(rootName: string, interfaceEntity:
 
   interfaceBody += '}\n';
   if (interfaceEntity.exportModifiers.includes(SyntaxKind.DeclareKeyword)) {
-    interfaceBody += `global.${interfaceName} = ${interfaceName};\n`;
+    interfaceBody += `
+    if (!global.${interfaceName}) {
+      global.${interfaceName} = ${interfaceName};\n
+    }
+    `; 
   }
   return interfaceBody;
 }