3 ms·

That’s simply not true. This method is monkeypatched by json gem

• quesera 3y ago
  JSON was added to Ruby stdlib in ruby-2.0.0 (2013), and has been a default gem since ruby-2.3.0 (2015). This is pretty close to "built in", I think.
  • michaelcampbell 3y ago
    You're both right, I think.