[feat] browser support

[niftylettuce]

Right now browser support is unstable due to these issues:

• Errors are broken in bthreads chjj/bthreads#5
• postMessage is broken in browsers chjj/bthreads#4
• bthreads "resolve" does not function for Node.js the same as "path.resolve" would chjj/bthreads#6

I previously had modified index.html with a basic example such as this:

  <script src="https://unpkg.com/bree">
  <script>
    (function() {
      function hello() {
        console.log('hello');
        postMessage('done');
      }

      var bree = new Bree({
        jobs: [
          {
            name: 'hello',
            path: hello,
            interval: '5s',
          }
        ]
      });

      bree.start();
    })();
  </script>

However since postMessage is not working, I have it commented out right now.

Note that I do expose threads from bthreads as Bree.threads, therefore one could write a browser test (e.g. with puppeteer that uses Bree.threads.backend === 'web_worker' and Bree.threads.browser === true to test that the proper backends load.

[hyusetiawan]

can this be worked around if it's running on electron?

[shadowgate15]

I'm closing this issue since bree no longer supports the browser.

[c0bra]

I'm closing this issue since bree no longer supports the browser.

If that's the case, can you remove "Works in the browser" from index.html?