src/language-js/utils.js/isUnitTestSetUp
function isUnitTestSetUp(n) {
  const unitTestSetUpRe = /^(before|after)(Each|All)$/;
  return (
    n.callee.type === "Identifier" &&
    unitTestSetUpRe.test(n.callee.name) &&
    n.arguments.length === 1
  );
}