Just for fun, I tried asking ChatGPT:

[[Please write some Javascript code which stores the state of a WebAssembly 
instance to a byte array.]]

// First, create a WebAssembly instance and obtain a reference to its memory 
object
const wasmInstance = new WebAssembly.Instance(wasmModule);
const memory = wasmInstance.exports.memory;

// Next, create a JavaScript typed array to hold the contents of the memory 
object
const memoryArray = new Uint8Array(memory.buffer);

// Finally, use the copy method to copy the contents of the memory object to 
the typed array
memory.copy(memoryArray);

[[Thanks. Could you also write some Javascript code which creates a new 
WebAssembly instance and uses this byte array to restore the previous state?]]

// First, create a WebAssembly module using the WebAssembly.compile function
const wasmModule = await WebAssembly.compile(wasmCode);

// Next, create a new WebAssembly instance and obtain a reference to its memory 
object
const wasmInstance = new WebAssembly.Instance(wasmModule);
const memory = wasmInstance.exports.memory;

// Use the copy method to copy the contents of the byte array into the memory 
object of the WebAssembly instance
memory.copy(byteArray);

// Now, the WebAssembly instance has been restored to the previous state

//...It is important to note that the byte array must be the same size as the 
memory object of the WebAssembly instance, and it must contain a valid snapshot 
of the state of the WebAssembly instance. If the byte array is not the correct 
size or does not contain a valid snapshot, the WebAssembly instance may not be 
restored correctly.

I haven’t had a chance to give it a try yet. Does it look reasonable?

Steve


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