JS in Ruby?!

string_voodoo.rb

### The Setup

Kernel.define_method(:"`") do |val|
  val
end

def const(val)
  val
end

console = Class.new do
  def log(message)
    puts message
  end
end.new

### Magic!

def html(&block)
  block.call.gsub /\${(.*?)}/ do
    block.binding.eval($1).to_s
  end
end

### And Here…We…Go!

const bar = 123
const str = html{`foo ${bar + 1000} baz`}
console.log(str)
# => "foo 1123 baz"

### 😱