legacy.ts doesn't work anymore

[erikdubbelboer]

legacy.ts was added in #13 so games that don't use NPM can include <script src="https://unpkg.com/@poki/netlib@0.0.18/dist/legacy.js"><script>.

I'm not sure when, but I guess a while ago it broke on these lines:

netlib/lib/peer.ts

Lines 61 to 63 in d983058

	(async () => {
	try {
	if (this.closing) {

This compiles to:

(async function() {
  try {
    if (t.closing)

where t is somehow undefined.

There is a )().catch(e => {}) below it which then swallows this error.

This seems like a bug in the compiler and I'm not sure how to fix it.