wro4j-extensions/src/main/java/ro/isdc/wro/extensions/processor/support/sass/SassCss.java
private RhinoScriptBuilder initScriptBuilder() {
    try {
      RhinoScriptBuilder builder = null;
      if (scope == null) {
        final String scriptInit = "var exports = {};";
        builder = RhinoScriptBuilder.newChain().evaluateChain(scriptInit, "initSass").evaluateChain(
          getScriptAsStream(), DEFAULT_SASS_JS);
        scope = builder.getScope();
      } else {
        builder = RhinoScriptBuilder.newChain(scope);
      }
      return builder;
    } catch (final IOException ex) {
      throw new WroRuntimeException("Failed reading javascript sass.js", ex);
    }
  }
private RhinoScriptBuilder initScriptBuilder() {
    try {
      RhinoScriptBuilder builder = null;
      if (scope == null) {
        final String scriptInit = "var exports = {};";
        builder = RhinoScriptBuilder.newChain().evaluateChain(scriptInit, "initSass").evaluateChain(
          getScriptAsStream(), DEFAULT_SASS_JS);
        scope = builder.getScope();
      } else {
        builder = RhinoScriptBuilder.newChain(scope);
      }
      return builder;
    } catch (final IOException ex) {
      throw new WroRuntimeException("Failed reading javascript sass.js", ex);
    }
  }
Initialize script builder for evaluation.