Wheatley: Semi-Automated JavaScript Refactoring

Incomplete, and I hope to refactor it (ironically enough), but kind of awesome.

it "can do an ultra-simple refactor, namely creating a wrapper function" do
  @code = <<-CODE
console.log("foo");
CODE
  @refactored = <<-REFACTORED
function asdf(qwerty) {
  console.log(qwerty);
}
asdf("foo");
REFACTORED
  Wheatley.create_wrapper_function(@code).should == @refactored
end

Extensive documentation on GitHub.

Features

• Wrap function definitions in wrapper functions
• Identify similar JavaScript code blocks
• Calculate similarity percentage between any two code blocks
• Compare code blocks to see how many specific tokens they differ by
• Extract the variant tokens by which similar code blocks differ
• Extract a literal from a simple function
• Create function calls
• Create wrapper functions
• Perform simplistic proof-of-concept refactoring

Named after the dumb AI from Portal 2.