message: Fix importing ethereumjs-util in browsers
diff: @@ -19,7 +19,7 @@ let ethUtil;
  let isEthAvailable = false;
  const ethImport = 'ethereumjs-util';
  -import(ethImport)
  +import('ethereumjs-util')
  .then(eth => {
  ethUtil = eth;
  isEthAvailable = true;
  