Function difference

test/parallel/test-process-env-allowed-flags-are-documented.js:97–99

(setA, setB)

});

const difference = (setA, setB) => {
  return new Set([...setA].filter((x) => !setB.has(x)));
};

// Remove heap prof options if the inspector is not enabled.
// NOTE: this is for ubuntuXXXX_sharedlibs_withoutssl_x64, no SSL, no inspector