Potential resource leak when exception occurs during file operation

Bug Report

Description

When an exception is raised during a file operation, the file handle may not be properly closed, leading to a resource leak.

Steps to Reproduce

1. Open a file without using a context manager
2. Raise an exception before closing the file
3. The file handle remains open

Expected Behavior

File handles should always be closed, even when exceptions occur.

Suggested Fix

Use a with statement (context manager) to ensure the file is always closed:

# Instead of:
f = open('file.txt', 'r')
data = f.read()
f.close()

# Use:
with open('file.txt', 'r') as f:
    data = f.read()

Environment

• Python 3.x
• Any OS

This is a common Python pitfall that can cause issues in long-running applications.

No repository file, test, or entry point is named, and the report describes a generic Python example rather than a specific Continue operation. Start by searching the TypeScript codebase for file-opening and closing logic, then identify a reproducible exception path; done means the affected handle is closed when that path fails and a regression test covers it.