chore: Refactor ts code

Author: msluszniak

packages/react-native-executorch/src/modules/computer_vision/ClassificationModule.ts

@@ -28,7 +28,7 @@ export class ClassificationModule extends BaseModule {
         model.modelSource
       );
 
-      if (paths === null || paths.length < 1 || paths[0] === undefined) {
+      if (!paths?.[0]) {
         throw new RnExecutorchError(
           RnExecutorchErrorCode.DownloadInterrupted,
           'The download has been interrupted. As a result, not every file was downloaded. Please retry the download.'

packages/react-native-executorch/src/modules/computer_vision/ImageEmbeddingsModule.ts

@@ -27,7 +27,7 @@ export class ImageEmbeddingsModule extends BaseModule {
         model.modelSource
       );
 
-      if (paths === null || paths.length < 1 || paths[0] === undefined) {
+      if (!paths?.[0]) {
         throw new RnExecutorchError(
           RnExecutorchErrorCode.DownloadInterrupted,
           'The download has been interrupted. As a result, not every file was downloaded. Please retry the download.'

packages/react-native-executorch/src/modules/computer_vision/ImageSegmentationModule.ts

@@ -29,7 +29,7 @@ export class ImageSegmentationModule extends BaseModule {
         model.modelSource
       );
 
-      if (paths === null || paths.length < 1 || paths[0] === undefined) {
+      if (!paths?.[0]) {
         throw new RnExecutorchError(
           RnExecutorchErrorCode.DownloadInterrupted,
           'The download has been interrupted. As a result, not every file was downloaded. Please retry the download.'

packages/react-native-executorch/src/modules/computer_vision/ObjectDetectionModule.ts

@@ -29,7 +29,7 @@ export class ObjectDetectionModule extends BaseModule {
         model.modelSource
       );
 
-      if (paths === null || paths.length < 1 || paths[0] === undefined) {
+      if (!paths?.[0]) {
         throw new RnExecutorchError(
           RnExecutorchErrorCode.DownloadInterrupted,
           'The download has been interrupted. As a result, not every file was downloaded. Please retry the download.'

packages/react-native-executorch/src/modules/computer_vision/StyleTransferModule.ts

@@ -28,7 +28,7 @@ export class StyleTransferModule extends BaseModule {
         model.modelSource
       );
 
-      if (paths === null || paths.length < 1 || paths[0] === undefined) {
+      if (!paths?.[0]) {
         throw new RnExecutorchError(
           RnExecutorchErrorCode.DownloadInterrupted,
           'The download has been interrupted. As a result, not every file was downloaded. Please retry the download.'

packages/react-native-executorch/src/modules/general/ExecutorchModule.ts

@@ -28,7 +28,7 @@ export class ExecutorchModule extends BaseModule {
         onDownloadProgressCallback,
         modelSource
       );
-      if (paths === null || paths.length < 1 || paths[0] === undefined) {
+      if (!paths?.[0]) {
         throw new RnExecutorchError(
           RnExecutorchErrorCode.DownloadInterrupted,
           'The download has been interrupted. As a result, not every file was downloaded. Please retry the download.'

packages/react-native-executorch/src/modules/natural_language_processing/VADModule.ts

@@ -28,7 +28,7 @@ export class VADModule extends BaseModule {
         onDownloadProgressCallback,
         model.modelSource
       );
-      if (paths === null || paths.length < 1 || paths[0] === undefined) {
+      if (!paths?.[0]) {
         throw new RnExecutorchError(
           RnExecutorchErrorCode.DownloadInterrupted,
           'The download has been interrupted. As a result, not every file was downloaded. Please retry the download.'