StructuredCloneOptions.md

StructuredCloneOptions

Namespace: SpawnDev.SpawnJS.JSObjects
Source: JSObjects/StructuredCloneOptions.cs
MDN Reference: StructuredCloneOptions on MDN

https://developer.mozilla.org/en-US/docs/Web/API/Window/structuredClone#options

Properties

Property	Type	Access	Description
StructuredCloneOptions	class	get	https://developer.mozilla.org/en-US/docs/Web/API/Window/structuredClone#options

Examples

SpawnDev.SpawnJS Mapping Note: The JavaScript examples below show the standard Web API usage. In SpawnDev.SpawnJS, the same API is available with C# conventions:

• Properties and methods use PascalCase (e.g., readyState becomes ReadyState)
• Events use ActionEvent with +=/-= (e.g., addEventListener("click", fn) becomes OnClick += handler)
• Async methods return Task<T> instead of Promise<T>
• Objects should be disposed with using statements
• Access via JS.Get<StructuredCloneOptions>(...) or constructor new StructuredCloneOptions(...)

Cloning an object

const mushrooms1 = {
  amanita: ["muscaria", "virosa"],
};

const mushrooms2 = structuredClone(mushrooms1);

mushrooms2.amanita.push("pantherina");
mushrooms1.amanita.pop();

console.log(mushrooms2.amanita); // ["muscaria", "virosa", "pantherina"]
console.log(mushrooms1.amanita); // ["muscaria"]

Transferring an object

// Create an ArrayBuffer with a size in bytes
const buffer = new ArrayBuffer(16);

const object1 = {
  buffer,
};

// Clone the object containing the buffer, and transfer it
const object2 = structuredClone(object1, { transfer: [buffer] });

// Create an array from the cloned buffer
const int32View2 = new Int32Array(object2.buffer);
int32View2[0] = 42;
console.log(int32View2[0]);

// Creating an array from the original buffer throws a TypeError
const int32View1 = new Int32Array(object1.buffer);

See full example on MDN