WebAssembly modules today are optionally associated with at most one instance of “linear memory”. In non-wasm parlance, you can put a stick of RAM into a wasm module. This WebAssembly.Memory is today always backed by an ArrayBuffer, but you’ll soon be able to flag a memory as “shared” which means it’s backed by SharedArrayBuffer instead. This subsequently means that the structured clone of a WebAssembly.Memory backed by a SharedArrayBuffer will refer to the same memory!
WebAssembly modules today are optionally associated with at most one instance of “linear memory”. In non-wasm parlance, you can put a stick of RAM into a wasm module. This WebAssembly.Memory is today always backed by an ArrayBuffer, but you’ll soon be able to flag a memory as “shared” which means it’s backed by SharedArrayBuffer instead. This subsequently means that the structured clone of a WebAssembly.Memory backed by a SharedArrayBuffer will refer to the same memory!