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# frozen_string_literal: true
require "propshaft/compiler"
class Propshaft::Compiler::SourceMappingUrls < Propshaft::Compiler
SOURCE_MAPPING_PATTERN = %r{(//|/\*)# sourceMappingURL=(.+\.map)(\s*?\*\/)?\s*?\Z}
def compile(asset, input)
input.gsub(SOURCE_MAPPING_PATTERN) { source_mapping_url(asset.logical_path, asset_path($2, asset.logical_path), $1, $3) }
end
private
def asset_path(source_mapping_url, logical_path)
source_mapping_url.gsub!(/^(.+\/)?#{url_prefix}\//, "")
if logical_path.dirname.to_s == "."
source_mapping_url
else
logical_path.dirname.join(source_mapping_url).to_s
end
end
def source_mapping_url(logical_path, resolved_path, comment_start, comment_end)
if asset = load_path.find(resolved_path)
"#{comment_start}# sourceMappingURL=#{url_prefix}/#{asset.digested_path}#{comment_end}"
else
Propshaft.logger.warn "Removed sourceMappingURL comment for missing asset '#{resolved_path}' from #{logical_path}"
"#{comment_start}#{comment_end}"
end
end
end
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