function mergeTaggedTemplateExpressions(ele, componentFoundIndex, t, babel) {
  if (t.isTaggedTemplateExpression(ele.expression)) {
    const [, text, index] = getTextAndInterpolatedVariables(
      ele.expression.tag.name,
      ele.expression,
      componentFoundIndex,
      babel,
    );
    return [text, index];
  }
  return ['', componentFoundIndex];
}
this is for supporting complex icu type interpolations
date`${variable}` and number`{${varName}, ::percent}`
also, plural`{${count}, one { ... } other { ... }}