Created
April 2, 2021 18:11
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A quick ruby script to extract sources from a JS sourcemap
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| require 'json' | |
| require 'rubygems/package' | |
| unless ARGV.length == 1 | |
| puts "Usage: ruby sourcemap_to_tar.rb <sourcemap_file>" | |
| exit 1 | |
| end | |
| sourcemap_filename = ARGV.shift | |
| sourcemap = JSON.parse(File.read(sourcemap_filename)) | |
| source_filenames = sourcemap['sources'].map { |x| x.sub(%r{^webpack:///}, '').sub(%r{^\./}, '') } | |
| source_contents = sourcemap['sourcesContent'] | |
| File.open("#{sourcemap_filename}.tar", "wb") do |file| | |
| Gem::Package::TarWriter.new(file) do |tar| | |
| source_filenames.zip(source_contents).each do |filename, content| | |
| tar.add_file(filename, 0644) do |io| | |
| io.write(content) | |
| end | |
| end | |
| end | |
| end |
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