OptionalinitialInitial allocation in whole MiB, at least 64 and no greater than maximumMiB. Defaults to 128 in browsers, 256 in Node, 64 in Cloudflare. Set explicitly when maximumMiB is below the host's default initial allocation.
OptionalmaximumHard growth ceiling in whole MiB, up to 1024. Default 512 in browser/Node, 96 in Cloudflare. Includes C++ heap, stack and static data; excludes JavaScript and total process/isolate memory. Fixed for the instance's lifetime.
Per-instance WebAssembly linear memory. MiB means 1,048,576 bytes.