The WebAssembly.Memory object is a resizable ArrayBuffer or SharedArrayBuffer that holds the raw bytes of memory accessed by a WebAssembly Instance.

A memory created by JavaScript or in WebAssembly code will be accessible and mutable from both JavaScript and WebAssembly.


class Memory {
constructor(descriptor: MemoryDescriptor);
readonly buffer: ArrayBuffer | SharedArrayBuffer;
grow(delta: number): number;


new Memory(descriptor: MemoryDescriptor)

Creates a new Memory object.


buffer: ArrayBuffer | SharedArrayBuffer

An accessor property that returns the buffer contained in the memory.


grow(delta: number): number

Increases the size of the memory instance by a specified number of WebAssembly pages (each one is 64KB in size).