wro4j-extensions/src/main/java/ro/isdc/wro/extensions/processor/support/uglify/UglifyJs.java
private RhinoScriptBuilder initScriptBuilder() {
    // TODO: Find a way to encapsulate this code
    RhinoScriptBuilder builder = null;
    try {
      if (scope == null) {
        builder = RhinoScriptBuilder.newChain().addJSON().evaluateChain(UglifyJs.class.getResourceAsStream("init.js"),
            "initScript").evaluateChain(getScriptAsStream(), DEFAULT_UGLIFY_JS);
        scope = builder.getScope();
      } else {
        builder = RhinoScriptBuilder.newChain(scope);
      }
      return builder;
    } catch (final Exception ex) {
      throw new IllegalStateException("Failed initializing js", ex);
    }
  }
private RhinoScriptBuilder initScriptBuilder() {
    // TODO: Find a way to encapsulate this code
    RhinoScriptBuilder builder = null;
    try {
      if (scope == null) {
        builder = RhinoScriptBuilder.newChain().addJSON().evaluateChain(UglifyJs.class.getResourceAsStream("init.js"),
            "initScript").evaluateChain(getScriptAsStream(), DEFAULT_UGLIFY_JS);
        scope = builder.getScope();
      } else {
        builder = RhinoScriptBuilder.newChain(scope);
      }
      return builder;
    } catch (final Exception ex) {
      throw new IllegalStateException("Failed initializing js", ex);
    }
  }
Initialize script builder for evaluation.