Browser Sync for a Polymer Web Component

browsersync.conf.js

const bs = require('browser-sync').create();
const componentPath = `/components/${__dirname.split('/').pop()}`;

bs.init({
  files: [ '**/*.{html,js,css}' ],
  open: false,
  ghostMode: false,
  startPath: `${componentPath}/demo/index.html`,
  serveStatic: [{
    route: componentPath,
    dir: '.'
  }, {
    route: '/components',
    dir: 'bower_components'
  }],
  server: {
    baseDir: '.',
    routes: {
      componentPath: '.',
      '/components': 'bower_components'
    }
  }
});

package.json

{
  "name": "new-component",
  "license": "MIT",
  "scripts": {
    "serve": "node browsersync.conf"
  },
  "devDependencies": {
    "browser-sync": "^2.18.13"
  }
}