Code Craft Question - Implement a Configurable Code Formatter

Question

## Round 1 - Coding

## Problem

Implement a configurable code formatter that applies a sequence of transformations to source code. Transformations include: `trim_trailing_whitespace`, `normalize_indentation`, `enforce_max_line_length` (wrap or truncate), and `remove_blank_lines`.

```python
class CodeFormatter:
    def __init__(self, config: dict):
        # config = {
        #   "trim_trailing_whitespace": bool,
        #   "indent_style": "spaces" | "tabs",
        #   "indent_size": int,
        #   "max_line_length": int | None,
        #   "remove_blank_lines": bool
        # }
        ...

def format(self, code: str) -> str: ...

def trim_trailing_whitespace(self, line: str) -> str: ...
    def normalize_indentation(self, line: str) -> str: ...
    def enforce_max_line_length(self, line: str) -> list[str]: ...
```

```
Example:
config = {"trim_trailing_whitespace": True, "indent_style": "spaces",
          "indent_size": 4, "max_line_length": 80, "remove_blank_lines": False}
fmt = CodeFormatter(config)
fmt.format("  def foo():  
		return 1") ->
  "    def foo():
        return 1"
```

## Follow-ups

1. How do you detect current indentation style (tabs vs. spaces) to normalize it?
2. What order should transformations be applied in - does order matter?
3. How would you handle multi-line strings or comments that should not be reformatted?
4. How would you make this formatter language-aware (e.g. Python vs. JavaScript)?

Code Craft Question - Implement a Configurable Code Formatter

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