import { Context } from "https://deno.land/x/sane_fmt@0.16.0/std/wasi.ts";
Attempt to begin execution of instance as a command by invoking its _start() export.
If the instance does not contain a _start() export, or if the instance contains an _initialize export an error will be thrown.
The instance must also have a WebAssembly.Memory export named "memory" which will be used as the address space, if it does not an error will be thrown.
Parameters
instance: WebAssembly.Instance