denoland-deno/std/wasi/snapshot_preview1_test_runner.ts

// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
import Context from "./snapshot_preview1.ts";

const options = JSON.parse(Deno.args[0]);
const pathname = Deno.args[1];
const binary = await Deno.readFile(pathname);
const module = await WebAssembly.compile(binary);

const context = new Context({
  env: options.env,
  args: [pathname].concat(options.args),
  preopens: options.preopens,
});

const instance = new WebAssembly.Instance(module, {
  wasi_snapshot_preview1: context.exports,
});

const memory = instance.exports.memory as WebAssembly.Memory;
context.memory = memory;

const start = instance.exports._start as CallableFunction;
start();