protected void activate()

in src/main/java/org/apache/sling/scripting/esx/services/impl/ScriptSandboxServiceImpl.java [73:103]
28 lines of code
3 McCabe index (conditional complexity)

    protected void activate(ComponentContext context) {
        try {
            this.slingBabelSource = "//@sourceURL=" + getClass().getCanonicalName() + "\n load( { name : \"" + getClass().getCanonicalName() + "\", script: \""
                    + StringEscapeUtils.escapeEcmaScript(new String(IOUtils.toByteArray(
                                            context.getBundleContext().getBundle()
                                            .getEntry(this.SLING_BABEL_SOURCE_CODE).openStream())))
                    + "\"} )";
        } catch (Exception ex) {
           log.error("failed to load babel source", ex);
        }
        
        String options = "var config = { "
                + "    presets: [\"es2015\"], "
                + "    compact: 'true',"
                + "    plugins: [[\"transform-react-jsx\", { pragma : \"SlingEsx.createElement\"}]] "
                //+ // disabled sandbox plugin for 
                //"    \"plugins\": [\"SlingSandbox, [\"transform-react-jsx\", { \"pragma\" : \"SlingEsx.createElement\"}]] \n" +        
                + "    }"; 
        NashornScriptEngineFactory factory = new NashornScriptEngineFactory();
        this.scriptEngine = factory.getScriptEngine();
        try {
            log.info("trying to load babel into the system");
            this.scriptEngine.eval(options);
            this.babelOptions = this.scriptEngine.get("config");
            scriptEngine.eval(slingBabelSource);
            this.babel = this.scriptEngine.get("SlingBabel");
            log.info("Babel loaded");
        } catch (ScriptException ex) {
            log.error("coudlnt load babel options", ex);
        }
    }