How to use

V8Engine

in

org.jooby.assets

@Override
public String process(final String filename, final String source, final Config conf,
  final ClassLoader loader) throws Exception {
 String path = filename.startsWith("/") ? filename.substring(1) : filename;
 return engine(V8Engine.class)
   .execute("r.js", source, options(), path);
}

public V8Object hash() {
 return hash(v8);
}

public String execute(final String path, final Object... args) throws Exception {
 V8Function fn = register(v8, (V8Function) load(path));
 V8Array arguments = array(Arrays.asList(args));
 Object value = null;
 try {
  value = register(v8, fn.call(v8, arguments));
  if (value instanceof String) {
   return value.toString();
  }
  List<AssetProblem> problems = problems(value);
  if (problems.size() > 0) {
   throw new AssetException(id, problems);
  }
  return ((V8Object) value).getString("output");
 } finally {
  releaseNow(value);
  releaseNow(arguments);
  releaseNow(fn);
 }
}

V8 v8 = engine.v8;
V8Object j2v8 = engine.hash();
j2v8.add("createFilter", engine.function((receiver, args) -> {
 List<PathMatcher> includes = filter(args, 0).stream()
   .map(it -> FileSystems.getDefault().getPathMatcher("glob:" + it))
 return engine.function((self, arguments) -> {
  Path path = Paths.get(arguments.get(0).toString());
  if (includes.stream().filter(it -> it.matches(path)).findFirst().isPresent()) {
log.debug("{}", options);
return engine.execute("rollup.js", source, options, filename);

private V8Engine v8(String id, String scope) {
 return cache.computeIfAbsent(Thread.currentThread().getName() + ":" + id, name -> {
  V8 v8 = V8.createV8Runtime(scope);
  MemoryManager mem = new MemoryManager(v8);
  console(v8, id);
  assets(getClass(), v8);
  b64(v8);
  return new V8Engine(v8, mem, id);
 });
}

V8 v8 = engine.v8;
V8Object j2v8 = engine.hash();
j2v8.add("createFilter", engine.function((receiver, args) -> {
 List<PathMatcher> includes = filter(args, 0).stream()
   .map(it -> FileSystems.getDefault().getPathMatcher("glob:" + it))
 return engine.function((self, arguments) -> {
  Path path = Paths.get(arguments.get(0).toString());
  if (includes.stream().filter(it -> it.matches(path)).findFirst().isPresent()) {
log.debug("{}", options);
return engine.execute("rollup.js", source, options, filename);

@SuppressWarnings("unchecked")
@Override
public String process(final String filename, final String source, final Config conf,
  final ClassLoader loader) throws Exception {
 Map<String, Object> options = new LinkedHashMap<>(options());
 Map<String, Object> predef = (Map<String, Object>) options.remove("predef");
 options.remove("excludes");
 return engine(V8Engine.class, "global")
   .execute("jshint.js", source, options(), predef, filename);
}

@Override
public String process(final String filename, final String source, final Config conf,
  final ClassLoader loader) throws Exception {
 return engine(V8Engine.class)
   .execute("uglify.js", source, options(), filename);
}

@Override
public String process(final String filename, final String source, final Config conf,
  final ClassLoader loader) throws Exception {
 return engine(V8Engine.class)
   .execute("auto-prefixer.js", source, options(), filename);
}

@Override
public String process(final String filename, final String source, final Config conf,
  final ClassLoader loader) throws Exception {
 return engine(V8Engine.class)
   .execute("csslint.js", source, options(), filename);
}

@Override
public String process(final String filename, final String source, final Config conf,
  final ClassLoader loader) throws Exception {
  return engine(V8Engine.class)
    .execute("less.js", source, options(), filename);
 }

@Override
public String process(final String filename, final String source, final Config conf,
  final ClassLoader loader) throws Exception {
 return engine(V8Engine.class)
   .execute("babel.js", source, options(), filename);
}

@Override
public String process(final String filename, final String source, final Config conf,
  final ClassLoader loader) throws Exception {
 return engine(V8Engine.class)
   .execute("ng-annotate.js", source, options(), filename);
}

@Override
public String process(final String filename, final String source, final Config conf,
  final ClassLoader loader) throws Exception {
 return engine(V8Engine.class)
   .execute("clean-css.js", source, options(), filename);
}

@Override
public String process(final String filename, final String source, final Config conf,
  final ClassLoader loader) throws Exception {
 return engine(V8Engine.class, "global")
   .execute("jscs.js", source, options(), filename);
}