function sanitizeFilename()

in script.js [459:463]

• 3 lines of code
• 1 McCabe index (conditional complexity)

  function sanitizeFilename(name) {
    // Replace invalid filename characters with underscores
    // Valid: alphanumeric, underscore, hyphen, and period
    return name.replace(/[^a-zA-Z0-9_\-\.]/g, '_');
  }