Browser Sync setup with shopify.

add_to_theme.liquid.html

<script id="__bs_script__">//<![CDATA[
  document.write("<script async src='https://localhost:3000/browser-sync/browser-sync-client.js'><\/script>")
//]]>
</script>

bs-config.js

module.exports = {
  "files": "/tmp/themeWatchNotify",
  "logPrefix": "bs",
  "browser": "brave-browser",
  "reloadOnRestart": true,
  "reloadDelay": 1000,
  "reloadDebounce": 2000,
  "https": true,
  "socket": {
    "domain": 'localhost:3000'
  },
  "injectChanges": false
};

Procfile

themekit: theme watch --notify /tmp/themeWatchNotify
browsersync: browser-sync start --config bs-config.js