https://www.graalvm.org/ 
public interface com.oracle.truffle.js.runtime.PromiseRejectionTracker
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: com.oracle.truffle.js.runtime.PromiseRejectionTracker
  super_class: java.lang.Object
{
  public abstract void promiseRejected(com.oracle.truffle.api.object.DynamicObject, java.lang.Object);
    descriptor: (Lcom/oracle/truffle/api/object/DynamicObject;Ljava/lang/Object;)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
         Name  Flags
      promise  
      value    

  public abstract void promiseRejectionHandled(com.oracle.truffle.api.object.DynamicObject);
    descriptor: (Lcom/oracle/truffle/api/object/DynamicObject;)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
         Name  Flags
      promise  

  public abstract void promiseRejectedAfterResolved(com.oracle.truffle.api.object.DynamicObject, java.lang.Object);
    descriptor: (Lcom/oracle/truffle/api/object/DynamicObject;Ljava/lang/Object;)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
         Name  Flags
      promise  
      value    

  public abstract void promiseResolvedAfterResolved(com.oracle.truffle.api.object.DynamicObject, java.lang.Object);
    descriptor: (Lcom/oracle/truffle/api/object/DynamicObject;Ljava/lang/Object;)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
         Name  Flags
      promise  
      value    
}
SourceFile: "PromiseRejectionTracker.java"