[cli]: fix incorrect generated file name

- do not create import type from core package if no data
- fix error when value is not object for mergeObj
- use filename without extensions when creating exports for package.json

packages/cli/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@grpc.ts/cli",
-  "version": "1.2.0",
+  "version": "1.2.1",
   "license": "MIT",
   "directories": {
     "lib": "lib"

packages/cli/src/tasks/createContent/createImports.ts

@@ -21,6 +21,10 @@ export function createImports({
   messageDependentTypes,
   serviceDependentTypes,
 }: ICreateImportsParams) {
+  if (!hasService && !hasGrpcTimestamp && !hasService) {
+    return '';
+  }
+
   const corePackage = '@grpc.ts/core';
   const dependentTypes = mergeObj(messageDependentTypes, serviceDependentTypes);
 

packages/cli/src/tasks/createContent/index.ts

@@ -93,15 +93,23 @@ export async function createContent(
           };
         });
 
-        const fileName = combine(
+        const fileNameWithoutExt = combine(
           {
             joinWith: '.',
           },
           filePath.slice(
             filePath.lastIndexOf('/') + 1,
             filePath.length - '.proto'.length,
           ),
-          'interface.ts',
+          'interface',
+        );
+
+        const fileName = combine(
+          {
+            joinWith: '.',
+          },
+          fileNameWithoutExt,
+          'ts',
         );
 
         cachedPackageOutputs[packageName] = fileName;
@@ -112,7 +120,7 @@ export async function createContent(
 
         generatedFilenames.push({
           packageName,
-          filename: fileName,
+          filename: fileNameWithoutExt,
         });
 
         writeFile(interfaceFilename, await format(fileContent), {
@@ -146,7 +154,7 @@ export async function createContent(
           `./${filename}.${hasEngine ? 'js' : 'ts'}`;
 
         result.typesVersions[`${packageName}`] = [
-          `./${filename}.${hasEngine ? '.d.ts' : '.ts'}`,
+          `./${filename}.${hasEngine ? 'd.ts' : 'ts'}`,
         ];
 
         return result;

packages/cli/src/utils/objectUtils.ts

@@ -5,8 +5,10 @@ export function mergeObj(source: any, target: any): any {
     if (sourceVal) {
       if (Array.isArray(sourceVal) && Array.isArray(value)) {
         source[key].push(...value);
-      } else {
+      } else if (typeof sourceVal === 'object') {
         Object.assign(source[key], value);
+      } else {
+        source[key] = value;
       }
     } else {
       source[key] = value;