CoffeeScript is a programming language that transcompiles to JavaScript. It adds syntactic sugar inspired by Ruby, Python and Haskell in an effort to enhance JavaScript's brevity and readability.
Quick CoffeeScript Review
Here a quick how to if CoffeeScript in general
Install CoffeScript lib
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npm install -g coffee-script
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For live conversion
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coffee --watch --compile script.coffee
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Ruby CoffeScript gem
Ruby CoffeeScript gem is a bridge to the official CoffeeScript compiler.
Install CoffeeScript gem
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gem install coffee-script
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Convert CoffeeScript file to JavaScript
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#!/usr/bin/env ruby
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require'coffee-script'
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ifARGF
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file =File.open("#{ARGV[0]}.js",'a')
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file.write CoffeeScript.compile(ARGF.read)
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end
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Run it
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ruby coffee2js.rb exploit.coffee
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Opal
Opal is a Ruby to JavaScript source-to-source compiler. It also has an implementation of the Ruby corelib.