src/language-js/print/property.js/printProperty
function printProperty(path, options, print) {
  const node = path.getValue();
  if (node.shorthand) {
    return print("value");
  }

  return printAssignment(
    path,
    options,
    print,
    printPropertyKey(path, options, print),
    ":",
    "value"
  );
}