Agreed. Setting up the environment with 0's seems like it should just be the sane default: 'env': { 'memoryBase': 0, 'tableBase': 0,

Agreed. Setting up the environment with 0's seems like it should just be the sane default: 'env': { 'memoryBase': 0, 'tableBase': 0, 'memory': new WebAssembly.Memory({initial: 256}), 'table': new WebAssembly.Table({initial: 0, element: 'anyfunc'}) } But it is really early on and if the Portable updating SDK is any indication it seems like they want to make it easy to get started.