wro4j-extensions/src/main/java/ro/isdc/wro/extensions/processor/support/linter/AbstractLinter.java
private RhinoScriptBuilder initScriptBuilder() {
    try {
      if (builder == null) {
        builder = RhinoScriptBuilder.newChain().evaluateChain(DEFINE_WINDOW, "window").evaluateChain(
            getScriptAsStream(), "linter.js");
      }
      return builder;
    } catch (final IOException e) {
      throw new WroRuntimeException("Failed reading init script", e);
    }
  }
private RhinoScriptBuilder initScriptBuilder() {
    try {
      if (builder == null) {
        builder = RhinoScriptBuilder.newChain().evaluateChain(DEFINE_WINDOW, "window").evaluateChain(
            getScriptAsStream(), "linter.js");
      }
      return builder;
    } catch (final IOException e) {
      throw new WroRuntimeException("Failed reading init script", e);
    }
  }
Initialize script builder for evaluation.