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postmodern/js_eval_hook.rb

Created October 25, 2021 21:45
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Hook JavaScript's eval() using Ruby
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js_eval_hook.rb
begin
require 'bundler/inline'
rescue LoadError => error
abort error.message
end
gemfile do
source 'https://rubygems.org'
gem 'therubyracer'
end
require 'v8'
ctx = V8::Context.new
ctx[:eval] = ->(this, code) { puts "eval(#{code})"; ctx.eval(code) }
p ctx.eval("eval(\"1 + 1\");")
# > eval(1 + 1)
# > 2
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