Safe JSON Parse

Implement a safeJsonParse function that safely parses a JSON string, returning a fallback value if parsing fails.

Requirements

• Attempt to parse the input string as JSON
• If parsing succeeds, return the parsed value
• If parsing throws, return the provided fallback value
• Handle any input gracefully (null, undefined, invalid strings)

Example

safeJsonParse('{"a":1}', {});    // { a: 1 }
safeJsonParse('invalid', {});    // {}
safeJsonParse('null', 'fallback'); // null