src/language-js/print/function.js/shouldPrintParamsWithoutParens
function shouldPrintParamsWithoutParens(path, options) {
  if (options.arrowParens === "always") {
    return false;
  }

  if (options.arrowParens === "avoid") {
    const node = path.getValue();
    return canPrintParamsWithoutParens(node);
  }

  // Fallback default; should be unreachable
  /* istanbul ignore next */
  return false;
}