#mizchi/js/builtins/weak

#Installation

{
  "import": [
    "mizchi/js",
    "mizchi/js/builtins/weak"
  ]
}

#Overview

• WeakRef - Weak reference to an object that doesn't prevent garbage collection
• FinalizationRegistry - Callback when objects are garbage collected

#Usage Example

fn main {
  let obj = @core.Object::new()

  // Create a weak reference
  let weak_ref = @weak.WeakRef::new(obj)

  // Dereference (might return None if collected)
  let deref = weak_ref.deref()

  // FinalizationRegistry for cleanup callbacks
  let registry = @weak.FinalizationRegistry::new()
}

#Use Cases

• Cache implementations
• Memory-sensitive data structures
• Resource cleanup tracking

#Reference

• MDN: WeakRef
• MDN: FinalizationRegistry