36. JSON.stringify - Simple

Implement a simplified version of JSON.stringify that converts JavaScript values to JSON strings.

Given a JavaScript value, convert it to a JSON string representation. Your implementation should handle:

• Primitives: numbers, strings, booleans, null
• Arrays: arrays of any supported types
• Objects: plain objects with string keys

1. Basic Functionality

• Convert numbers to string representation
• Convert strings with proper escaping (quotes, backslashes, newlines, etc.)
• Convert booleans to "true" or "false"
• Convert null to "null"
• Convert arrays to comma-separated values in brackets
• Convert objects to comma-separated key-value pairs in braces

Examples

stringify(42);                    // "42"
stringify("hello");                // '"hello"'
stringify(true);                   // "true"
stringify(null);                   // "null"
stringify([1, 2, 3]);             // "[1,2,3]"
stringify({a: 1, b: 2});          // '{"a":1,"b":2}'