Implement a custom version of JSON.stringify. This function should serialize a JavaScript object or value into a JSON string. The implementation should mimic the behavior of the native JSON.stringify, including handling of:
- Primitives (
string, number, boolean, null)
- Arrays and nested arrays
- Plain objects with nested properties
- Functions and
undefined (ignored in objects, replaced with null in arrays)
Example Inputs & Outputs
JSONStringify("hello")
// → '"hello"'
JSONStringify({ name: "Alice", age: 30 })
// → '{"name":"Alice","age":30}'
JSONStringify([1, "a", true, null])
// → '[1,"a",true,null]'
JSONStringify({ a: undefined, b: function() {}, c: 5 })
// → '{"c":5}'
JSONStringify([undefined, function() {}, 5])
// → '[null,null,5]'
Constraints & Edge Cases
- Should handle all basic types: string, number, boolean, null, object, array
- Functions and
undefined:
- Omitted in objects
- Converted to
null in arrays
- Throws
TypeError on circular references
- Does not handle special objects like
Date, Set, Map, etc.
