extract normalization logic into helper function

Author: Tamar Weisskopf

src/vuln_analysis/utils/functions_parsers/javascript_functions_parser.py

@@ -236,6 +236,10 @@ def _split_into_statements(text: str) -> list[str]:
         - Function/class declarations (including multiline parameter lists)
         - Braces { and }
         """
+        def normalize(line: str) -> str:
+            """Normalize whitespace: collapse multiple spaces/newlines into single space and strip."""
+            return re.sub(r'\s+', ' ', line).strip()
+        
         parts = []
         current = ''
         in_string = False
@@ -281,42 +285,40 @@ def _split_into_statements(text: str) -> list[str]:
             current += char
 
             if just_closed_block_comment and char == '/':
-                normalized = re.sub(r'\s+', ' ', current).strip()
+                normalized = normalize(current)
                 if normalized.startswith('/*') and normalized.endswith('*/'):
                     parts.append(normalized)
                     current = ''
                 just_closed_block_comment = False
 
             if char == '\n' and in_line_comment:
                 in_line_comment = False
-                current = re.sub(r'\s+', ' ', current).strip()
-                parts.append(current)
+                parts.append(normalize(current))
                 current = ''
 
             elif char == ';' and not in_string and not in_block_comment and not in_line_comment:
-                current = re.sub(r'\s+', ' ', current).strip()
-                parts.append(current)
+                parts.append(normalize(current))
                 current = ''
 
             # Split on opening brace { for function/method body
             elif char == '{' and not in_string and not in_block_comment and not in_line_comment:
-                normalized = re.sub(r'\s+', ' ', current).strip()
+                normalized = normalize(current)
                 if just_closed_paren or any(normalized.startswith(kw) for kw in ['class ', 'export class ']):
                     if normalized:
                         parts.append(normalized)
                         current = ''
                     just_closed_paren = False
 
             elif char == '\n' and not in_string and not in_block_comment:
-                normalized = re.sub(r'\s+', ' ', current).strip()
+                normalized = normalize(current)
                 if normalized:
                     if normalized == '}':
                         parts.append(normalized)
                         current = ''
 
         # Add remaining content
         if current:
-            normalized = re.sub(r'\s+', ' ', current).strip()
+            normalized = normalize(current)
             if normalized:
                 parts.append(normalized)