javascript - Node.js: "Can't set headers after they are sent" error -


here code:

github.repos.getcontent({ user: "user", repo: "repo", path: "path"  }, function(err, res) { var content = err; console.log(err, res); });  response.json({ message: 'got content! ' + content});     });

that github command outputs content of file, , manipulate content. however, either says "can't set headers after sent" if put inside function(err,res) part, or says var content hasn't been made yet if outside. how use output , manipulate it?


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