Class: Condenser::UglifyMinifier

Inherits:
NodeProcessor show all
Defined in:
lib/condenser/minifiers/uglify_minifier.rb

Defined Under Namespace

Classes: Error

Instance Attribute Summary

Attributes inherited from NodeProcessor

#npm_path

Instance Method Summary collapse

Methods inherited from NodeProcessor

#binary, call, #exec_runtime, #exec_runtime_error, #exec_syntax_error, #name, #npm_install, #npm_module_path, setup

Constructor Details

#initialize(dir, options = {}) ⇒ UglifyMinifier

Returns a new instance of UglifyMinifier.



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# File 'lib/condenser/minifiers/uglify_minifier.rb', line 6

def initialize(dir, options = {})
  super(dir)
  npm_install('uglify-js')
  
  @options = options.merge({
    warnings: true
  }).freeze
end

Instance Method Details

#call(environment, input) ⇒ Object

Raises:



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# File 'lib/condenser/minifiers/uglify_minifier.rb', line 15

def call(environment, input)
  opts = {
    # 'moduleRoot' => nil,
    # 'filename' => input[:filename],
    # 'moduleId' => input[:filename].sub(/(\..+)+/, ''),
    # 'filenameRelative' => input[:filename],#split_subpath(input[:load_path], input[:filename]),
    # 'sourceFileName' => input[:filename],
    # 'sourceMapTarget' => input[:filename]
    # # 'inputSourceMap'
  }.merge(@options)
  
  result = exec_runtime(<<-JS)
    const UglifyJS = require("#{npm_module_path('uglify-js')}");
    const source = #{JSON.generate(input[:filename] => input[:source])}
    const options = #{JSON.generate(opts)};

    // {
    //     sourceMap: {
    //         content: "content from compiled.js.map",
    //         url: "minified.js.map"
    //     }
    // });
    
    try {
      var result = UglifyJS.minify(source, options);
      console.log(JSON.stringify(result));
    } catch(e) {
      console.log(JSON.stringify({'error': e.name + ": " + e.message}));
      process.exit(1);
    }
  JS

  raise Error, result['error'] if result['error']
  
  if result['warnings']
    result['warnings'].each { |w| environment.logger.warn(w) }
  end
  
  input[:source] = result['code']
  input[:map] = result['map']
end