var memory;

var failed;

exports.preInstantiate = function(imports, exports) {

imports["wasi_snapshot_preview1"] = {

fd_write: function(fd, iov, iov_len, nptr) {

if (fd != 2) failed = "unexpected fd: " + fd;

const messagePtr = new Uint32Array(memory.buffer)[ iov >>> 2 ];

const messageLen = new Uint32Array(memory.buffer)[(iov >>> 2) + 1];

const message = Array.from(new Uint8Array(memory.buffer, messagePtr, messageLen)).map(c => String.fromCharCode(c)).join("");

(fd == 1 ? process.stdout : process.stderr).write(message);

},

proc_exit: function(code) {

console.log("exit: " + code);

},

random_get: function(buf, len) {

new Uint8Array(memory.buffer, buf, len).set(require("crypto").randomBytes(len));

}

};

};

exports.postInstantiate = function(instance) {

const exports = instance.exports;

memory = exports.memory;

console.log("Math.random = " + exports.test());

if (failed) throw Error(failed);

};