Function sanitizeTextForRender

Sanitizes text for safe HTML rendering by escaping potentially dangerous characters while preserving valid HTML tags.

This function performs the following transformations:

• Converts newline characters (\n) to HTML line breaks (
  )
• Escapes stray '<' characters that are not part of valid HTML tags (e.g., "x < 5" → "x < 5")
• Escapes stray '>' characters that are not part of valid HTML tags (e.g., "x > 5" → "x > 5")
• Preserves valid HTML tags and their attributes (e.g.,
  , ,

  )

LIMITATIONS: This regex-based approach has known limitations:

• Cannot properly handle '>' characters inside HTML attributes (e.g.,
  may not work correctly)
• Complex nested quotes or edge cases may not be handled perfectly
• For more complex HTML sanitization needs, consider using a proper HTML parser

Returns

The sanitized text safe for HTML rendering, or the original value if null/undefined.

Example

sanitizeTextForRender('Hello\nWorld') // 'Hello<br>World'
sanitizeTextForRender('if x < 5') // 'if x &lt; 5'
sanitizeTextForRender('<div>Hello</div>') // '<div>Hello</div>'
sanitizeTextForRender('Price < $100 <strong>Sale!</strong>') // 'Price &lt; $100 <strong>Sale!</strong>'