src/language-js/print/template-literal.js/printTemplateExpression
function printTemplateExpression(path, print) {
  const node = path.getValue();
  let printed = print(path);
  if (hasComment(node)) {
    printed = group(concat([indent(concat([softline, printed])), softline]));
  }
  return concat(["${", printed, lineSuffixBoundary, "}"]);
}