Check whether json2ts exited without any errors before processing the generated ts file (phillipdupuis#14)

* When a generated ts file already exists but json2ts fails to write a new file due to whatever reason 'remove_master_model_from_output' is still called, this results in a confusing error message. Instead check exit code of json2ts and output it to log.

Author: qwyt

pydantic2ts/cli/script.py

@@ -210,11 +210,17 @@ def generate_typescript_defs(
 
     logger.info("Converting JSON schema to typescript definitions...")
 
-    os.system(f'{json2ts_cmd} -i {schema_file_path} -o {output} --bannerComment ""')
-    shutil.rmtree(schema_dir)
-    remove_master_model_from_output(output)
+    json2ts_exit_code = os.system(
+        f'{json2ts_cmd} -i {schema_file_path} -o {output} --bannerComment ""'
+    )
 
-    logger.info(f"Saved typescript definitions to {output}.")
+    if json2ts_exit_code == 0:
+        remove_master_model_from_output(output)
+        logger.info(f"Saved typescript definitions to {output}.")
+    else:
+        logger.error(f"{json2ts_cmd} failed with exit code {json2ts_exit_code}.")
+
+    shutil.rmtree(schema_dir)
 
 
 def parse_cli_args(args: List[str] = None) -> argparse.Namespace: