static L<S> tok_moveImportsUp(L<S> tok) {
  new StringBuilder buf;
  for (int i = 1; i < l(tok); i += 2)
    if (eq(tok.get(i), 'import)) {
      int j = indexOf(tok, ";");
      buf.append(joinSubList(tok, i, j+1)).append("\n");
      replaceTokens_reTok(tok, i, j+1, "");
    }
    
  if (nempty(buf)) {
    tok.set(1, str(buf)+tok.get(1));
    reTok(tok, 1, 2);
  }
    
  ret tok;
}