diff --git a/ets2panda/driver/build_system/src/build/base_mode.ts b/ets2panda/driver/build_system/src/build/base_mode.ts
index c208585be1336a5715ff9c94976c59c4610408a4..91bbb70b32cfec201e412de5a2e3a2c7a75d205f 100644
--- a/ets2panda/driver/build_system/src/build/base_mode.ts
+++ b/ets2panda/driver/build_system/src/build/base_mode.ts
@@ -235,6 +235,7 @@ export abstract class BaseMode {
 
     if (this.isDebug) {
       ets2pandaCmd.push('--debug-info');
+      ets2pandaCmd.push('--opt-level=0');
     }
     ets2pandaCmd.push(fileInfo.filePath);
     this.logger.printInfo('ets2pandaCmd: ' + ets2pandaCmd.join(' '));
@@ -270,7 +271,7 @@ export abstract class BaseMode {
       if (this.hasMainModule && (this.byteCodeHar || this.moduleType === OHOS_MODULE_TYPE.SHARED)) {
         let filePathFromModuleRoot: string = path.relative(this.moduleRootPath, fileInfo.filePath);
         let declEtsOutputPath: string = changeFileExtension(
-          path.join(this.declgenV2OutPath as string, this.packageName, filePathFromModuleRoot),
+          path.join(this.declgenV2OutPath as string, filePathFromModuleRoot),
           DECL_ETS_SUFFIX
         );
         ensurePathExists(declEtsOutputPath);
@@ -325,6 +326,7 @@ export abstract class BaseMode {
     ensurePathExists(intermediateFilePath);
     if (this.isDebug) {
       ets2pandaCmd.push('--debug-info');
+      ets2pandaCmd.push('--opt-level=0');
     }
     ets2pandaCmd.push(this.buildConfig.compileFiles[0]);
     this.logger.printInfo('ets2pandaCmd: ' + ets2pandaCmd.join(' '));
@@ -1381,6 +1383,7 @@ export abstract class BaseMode {
 
       if (this.isDebug) {
         ets2pandaCmd.push('--debug-info');
+        ets2pandaCmd.push('--opt-level=0');
       }
       ets2pandaCmd.push(fileInfo.filePath);
 
diff --git a/ets2panda/driver/build_system/src/build/compile_thread_worker.ts b/ets2panda/driver/build_system/src/build/compile_thread_worker.ts
index 49644a1a6db1d0c9e2c79a468765f33728b6982d..ab98fac0c5d670bfd9c6c71e6474745e7e00e192 100644
--- a/ets2panda/driver/build_system/src/build/compile_thread_worker.ts
+++ b/ets2panda/driver/build_system/src/build/compile_thread_worker.ts
@@ -62,6 +62,7 @@ function compileAbc(jobInfo: JobInfo): void {
 
     if (isDebug) {
       ets2pandaCmd.push('--debug-info');
+      ets2pandaCmd.push('--opt-level=0');
     }
     ets2pandaCmd.push(fileInfo.filePath);
 
@@ -134,6 +135,7 @@ function compileExternalProgram(jobInfo: JobInfo): void {
 
     if (isDebug) {
       ets2pandaCmd.push('--debug-info');
+      ets2pandaCmd.push('--opt-level=0');
     }
     ets2pandaCmd.push(fileInfo.filePath);
 
diff --git a/ets2panda/driver/build_system/src/build/compile_worker.ts b/ets2panda/driver/build_system/src/build/compile_worker.ts
index d9f719d3eb8b8abf84170b9983cfe4667b82f497..1ae817d7d03b710f5eedc669d1713972c75c6aa8 100644
--- a/ets2panda/driver/build_system/src/build/compile_worker.ts
+++ b/ets2panda/driver/build_system/src/build/compile_worker.ts
@@ -62,6 +62,7 @@ process.on('message', (message: {
       ];
       if (isDebug) {
         ets2pandaCmd.push('--debug-info');
+        ets2pandaCmd.push('--opt-level=0');
       }
       ets2pandaCmd.push(fileInfo.filePath);
 
@@ -86,7 +87,7 @@ process.on('message', (message: {
       if (buildConfig.hasMainModule && (buildConfig.byteCodeHar || buildConfig.moduleType === OHOS_MODULE_TYPE.SHARED)) {
         let filePathFromModuleRoot: string = path.relative(buildConfig.moduleRootPath, fileInfo.filePath);
         let declEtsOutputPath: string = changeFileExtension(
-          path.join(buildConfig.declgenV2OutPath as string, buildConfig.packageName, filePathFromModuleRoot),
+          path.join(buildConfig.declgenV2OutPath as string, filePathFromModuleRoot),
           DECL_ETS_SUFFIX
         );
         ensurePathExists(declEtsOutputPath);
diff --git a/ets2panda/util/importPathManager.cpp b/ets2panda/util/importPathManager.cpp
index cd665c12da6a7f6e995c6f16c202b332674c4035..9b64cc0f4be8977b0141df578c5881374dad3050 100644
--- a/ets2panda/util/importPathManager.cpp
+++ b/ets2panda/util/importPathManager.cpp
@@ -44,7 +44,7 @@ namespace fs = std::experimental::filesystem;
 #endif
 namespace ark::es2panda::util {
 
-constexpr size_t SUPPORTED_INDEX_FILES_SIZE = 3;
+constexpr size_t SUPPORTED_INDEX_FILES_SIZE = 4;
 constexpr size_t SUPPORTED_EXTENSIONS_SIZE = 6;
 constexpr size_t ALLOWED_EXTENSIONS_SIZE = 8;
 
@@ -366,7 +366,8 @@ std::string ImportPathManager::TryMatchDependencies(std::string_view fixedPath)
 std::string_view ImportPathManager::DirOrDirWithIndexFile(StringView dir) const
 {
     // Supported index files: keep this checking order
-    std::array<std::string, SUPPORTED_INDEX_FILES_SIZE> supportedIndexFiles = {"index.ets", "index.sts", "index.ts"};
+    std::array<std::string, SUPPORTED_INDEX_FILES_SIZE> supportedIndexFiles = {"index.ets", "index.sts", "index.ts",
+                                                                               "index.d.ets"};
     for (const auto &indexFile : supportedIndexFiles) {
         std::string indexFilePath = dir.Mutf8() + ark::os::file::File::GetPathDelim().at(0) + indexFile;
         if (ark::os::file::File::IsRegularFile(indexFilePath)) {