src/assets.js
function staticMove(source: string, dest: string, assets: Array<string>): Promise {
  assets.forEach(folder => {
    fs.copy(path.join(source, folder), path.join(dest, folder));
  });
  return Promise.resolve();
}
function staticMove(source: string, dest: string, assets: Array<string>): Promise {
  assets.forEach(folder => {
    fs.copy(path.join(source, folder), path.join(dest, folder));
  });
  return Promise.resolve();
}
Copy static assets from theme to dist