def _process_js_content(self, js: str) -> str:
        """Process JavaScript content into a structured text representation.

        This method:
        1. Extracts and preserves comments
        2. Identifies imports and exports
        3. Extracts function and class definitions
        4. Identifies variable declarations
        5. Formats the JavaScript structure in a readable way
        """
        # Extract comments
        comments = self._extract_comments(js)

        # Extract imports and exports
        imports_exports = self._extract_imports_exports(js)

        # Extract function definitions
        functions = self._extract_functions(js)

        # Extract class definitions
        classes = self._extract_classes(js)

        # Extract variable declarations
        variables = self._extract_variables(js)

        # Build the result
        result = []

        if comments:
            result.append("COMMENTS:")
            result.extend(comments)
            result.append("")

        if imports_exports:
            result.append("IMPORTS AND EXPORTS:")
            result.extend(imports_exports)
            result.append("")

        if functions:
            result.append("FUNCTIONS:")
            result.extend(functions)
            result.append("")

        if classes:
            result.append("CLASSES:")
            result.extend(classes)
            result.append("")

        if variables:
            result.append("VARIABLE DECLARATIONS:")
            result.extend(variables)
            result.append("")

        return "\n".join(result)
Process JavaScript content into a structured text representation.

        This method:
        1. Extracts and preserves comments
        2. Identifies imports and exports
        3. Extracts function and class definitions
        4. Identifies variable declarations
        5. Formats the JavaScript structure in a readable way
        
py/core/parsers/text/js_parser.py