https://www.graalvm.org/ 
public final class com.oracle.truffle.js.runtime.builtins.JSErrorObject$IsIdenticalOrUndefined
  minor version: 0
  major version: 59
  flags: flags: (0x0031) ACC_PUBLIC, ACC_FINAL, ACC_SUPER
  this_class: com.oracle.truffle.js.runtime.builtins.JSErrorObject$IsIdenticalOrUndefined
  super_class: java.lang.Object
{
  public void <init>();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.oracle.truffle.js.runtime.builtins.JSErrorObject$IsIdenticalOrUndefined this
         0: .line 125
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // com.oracle.truffle.js.runtime.builtins.JSErrorObject$IsIdenticalOrUndefined this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/oracle/truffle/js/runtime/builtins/JSErrorObject$IsIdenticalOrUndefined;

  public static com.oracle.truffle.api.utilities.TriState doError(com.oracle.truffle.js.runtime.builtins.JSErrorObject, com.oracle.truffle.js.runtime.objects.JSDynamicObject);
    descriptor: (Lcom/oracle/truffle/js/runtime/builtins/JSErrorObject;Lcom/oracle/truffle/js/runtime/objects/JSDynamicObject;)Lcom/oracle/truffle/api/utilities/TriState;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.oracle.truffle.js.runtime.builtins.JSErrorObject receiver
        start local 1 // com.oracle.truffle.js.runtime.objects.JSDynamicObject other
         0: .line 128
            aload 0 /* receiver */
            aload 1 /* other */
            if_acmpne 1
            iconst_1
            goto 2
      StackMap locals:
      StackMap stack:
         1: iconst_0
      StackMap locals:
      StackMap stack: int
         2: invokestatic com.oracle.truffle.api.utilities.TriState.valueOf:(Z)Lcom/oracle/truffle/api/utilities/TriState;
            areturn
        end local 1 // com.oracle.truffle.js.runtime.objects.JSDynamicObject other
        end local 0 // com.oracle.truffle.js.runtime.builtins.JSErrorObject receiver
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    3     0  receiver  Lcom/oracle/truffle/js/runtime/builtins/JSErrorObject;
            0    3     1     other  Lcom/oracle/truffle/js/runtime/objects/JSDynamicObject;
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.dsl.Specialization()
    MethodParameters:
          Name  Flags
      receiver  
      other     

  public static com.oracle.truffle.api.utilities.TriState doException(com.oracle.truffle.js.runtime.builtins.JSErrorObject, com.oracle.truffle.js.runtime.GraalJSException);
    descriptor: (Lcom/oracle/truffle/js/runtime/builtins/JSErrorObject;Lcom/oracle/truffle/js/runtime/GraalJSException;)Lcom/oracle/truffle/api/utilities/TriState;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.oracle.truffle.js.runtime.builtins.JSErrorObject receiver
        start local 1 // com.oracle.truffle.js.runtime.GraalJSException other
         0: .line 133
            aload 0 /* receiver */
            aload 1 /* other */
            invokevirtual com.oracle.truffle.js.runtime.GraalJSException.getErrorObject:()Ljava/lang/Object;
            if_acmpne 1
            iconst_1
            goto 2
      StackMap locals:
      StackMap stack:
         1: iconst_0
      StackMap locals:
      StackMap stack: int
         2: invokestatic com.oracle.truffle.api.utilities.TriState.valueOf:(Z)Lcom/oracle/truffle/api/utilities/TriState;
            areturn
        end local 1 // com.oracle.truffle.js.runtime.GraalJSException other
        end local 0 // com.oracle.truffle.js.runtime.builtins.JSErrorObject receiver
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    3     0  receiver  Lcom/oracle/truffle/js/runtime/builtins/JSErrorObject;
            0    3     1     other  Lcom/oracle/truffle/js/runtime/GraalJSException;
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.dsl.Specialization()
    MethodParameters:
          Name  Flags
      receiver  
      other     

  public static com.oracle.truffle.api.utilities.TriState doOther(com.oracle.truffle.js.runtime.builtins.JSErrorObject, java.lang.Object);
    descriptor: (Lcom/oracle/truffle/js/runtime/builtins/JSErrorObject;Ljava/lang/Object;)Lcom/oracle/truffle/api/utilities/TriState;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=1, locals=2, args_size=2
        start local 0 // com.oracle.truffle.js.runtime.builtins.JSErrorObject receiver
        start local 1 // java.lang.Object other
         0: .line 139
            getstatic com.oracle.truffle.api.utilities.TriState.UNDEFINED:Lcom/oracle/truffle/api/utilities/TriState;
            areturn
        end local 1 // java.lang.Object other
        end local 0 // com.oracle.truffle.js.runtime.builtins.JSErrorObject receiver
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    1     0  receiver  Lcom/oracle/truffle/js/runtime/builtins/JSErrorObject;
            0    1     1     other  Ljava/lang/Object;
    RuntimeInvisibleAnnotations: 
      com.oracle.truffle.api.dsl.Fallback()
    MethodParameters:
          Name  Flags
      receiver  
      other     
}
SourceFile: "JSErrorObject.java"
NestHost: com.oracle.truffle.js.runtime.builtins.JSErrorObject
InnerClasses:
  public final IsIdenticalOrUndefined = com.oracle.truffle.js.runtime.builtins.JSErrorObject$IsIdenticalOrUndefined of com.oracle.truffle.js.runtime.builtins.JSErrorObject
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.library.ExportMessage()