https://www.graalvm.org/ 
public class com.oracle.truffle.js.nodes.access.DeclareEvalVariableNode extends com.oracle.truffle.js.nodes.control.StatementNode
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: com.oracle.truffle.js.nodes.access.DeclareEvalVariableNode
  super_class: com.oracle.truffle.js.nodes.control.StatementNode
{
  private com.oracle.truffle.js.nodes.JavaScriptNode dynamicScopeNode;
    descriptor: Lcom/oracle/truffle/js/nodes/JavaScriptNode;
    flags: (0x0002) ACC_PRIVATE
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.nodes.Node$Child()

  private com.oracle.truffle.js.nodes.access.WriteNode initScopeNode;
    descriptor: Lcom/oracle/truffle/js/nodes/access/WriteNode;
    flags: (0x0002) ACC_PRIVATE
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.nodes.Node$Child()

  private com.oracle.truffle.js.nodes.access.HasPropertyCacheNode hasProperty;
    descriptor: Lcom/oracle/truffle/js/nodes/access/HasPropertyCacheNode;
    flags: (0x0002) ACC_PRIVATE
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.nodes.Node$Child()

  private com.oracle.truffle.js.nodes.access.PropertySetNode defineProperty;
    descriptor: Lcom/oracle/truffle/js/nodes/access/PropertySetNode;
    flags: (0x0002) ACC_PRIVATE
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.nodes.Node$Child()

  private final com.oracle.truffle.js.runtime.JSContext context;
    descriptor: Lcom/oracle/truffle/js/runtime/JSContext;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  private final java.lang.String varName;
    descriptor: Ljava/lang/String;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  static final boolean $assertionsDisabled;
    descriptor: Z
    flags: (0x1018) ACC_STATIC, ACC_FINAL, ACC_SYNTHETIC

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=1, locals=0, args_size=0
         0: .line 55
            ldc Lcom/oracle/truffle/js/nodes/access/DeclareEvalVariableNode;
            invokevirtual java.lang.Class.desiredAssertionStatus:()Z
            ifne 1
            iconst_1
            goto 2
      StackMap locals:
      StackMap stack:
         1: iconst_0
      StackMap locals:
      StackMap stack: int
         2: putstatic com.oracle.truffle.js.nodes.access.DeclareEvalVariableNode.$assertionsDisabled:Z
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  public void <init>(com.oracle.truffle.js.runtime.JSContext, java.lang.String, com.oracle.truffle.js.nodes.JavaScriptNode, com.oracle.truffle.js.nodes.access.WriteNode);
    descriptor: (Lcom/oracle/truffle/js/runtime/JSContext;Ljava/lang/String;Lcom/oracle/truffle/js/nodes/JavaScriptNode;Lcom/oracle/truffle/js/nodes/access/WriteNode;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=5, locals=5, args_size=5
        start local 0 // com.oracle.truffle.js.nodes.access.DeclareEvalVariableNode this
        start local 1 // com.oracle.truffle.js.runtime.JSContext context
        start local 2 // java.lang.String varName
        start local 3 // com.oracle.truffle.js.nodes.JavaScriptNode dynamicScopeNode
        start local 4 // com.oracle.truffle.js.nodes.access.WriteNode writeDynamicScopeNode
         0: .line 63
            aload 0 /* this */
            invokespecial com.oracle.truffle.js.nodes.control.StatementNode.<init>:()V
         1: .line 64
            aload 0 /* this */
            aload 1 /* context */
            putfield com.oracle.truffle.js.nodes.access.DeclareEvalVariableNode.context:Lcom/oracle/truffle/js/runtime/JSContext;
         2: .line 65
            aload 0 /* this */
            aload 2 /* varName */
            putfield com.oracle.truffle.js.nodes.access.DeclareEvalVariableNode.varName:Ljava/lang/String;
         3: .line 66
            aload 0 /* this */
            aload 3 /* dynamicScopeNode */
            putfield com.oracle.truffle.js.nodes.access.DeclareEvalVariableNode.dynamicScopeNode:Lcom/oracle/truffle/js/nodes/JavaScriptNode;
         4: .line 67
            aload 0 /* this */
            aload 4 /* writeDynamicScopeNode */
            putfield com.oracle.truffle.js.nodes.access.DeclareEvalVariableNode.initScopeNode:Lcom/oracle/truffle/js/nodes/access/WriteNode;
         5: .line 68
            aload 0 /* this */
            aload 2 /* varName */
            aload 1 /* context */
            invokestatic com.oracle.truffle.js.nodes.access.HasPropertyCacheNode.create:(Ljava/lang/Object;Lcom/oracle/truffle/js/runtime/JSContext;)Lcom/oracle/truffle/js/nodes/access/HasPropertyCacheNode;
            putfield com.oracle.truffle.js.nodes.access.DeclareEvalVariableNode.hasProperty:Lcom/oracle/truffle/js/nodes/access/HasPropertyCacheNode;
         6: .line 69
            aload 0 /* this */
            aload 2 /* varName */
            iconst_0
            aload 1 /* context */
            iconst_0
            invokestatic com.oracle.truffle.js.nodes.access.PropertySetNode.create:(Ljava/lang/Object;ZLcom/oracle/truffle/js/runtime/JSContext;Z)Lcom/oracle/truffle/js/nodes/access/PropertySetNode;
            putfield com.oracle.truffle.js.nodes.access.DeclareEvalVariableNode.defineProperty:Lcom/oracle/truffle/js/nodes/access/PropertySetNode;
         7: .line 70
            return
        end local 4 // com.oracle.truffle.js.nodes.access.WriteNode writeDynamicScopeNode
        end local 3 // com.oracle.truffle.js.nodes.JavaScriptNode dynamicScopeNode
        end local 2 // java.lang.String varName
        end local 1 // com.oracle.truffle.js.runtime.JSContext context
        end local 0 // com.oracle.truffle.js.nodes.access.DeclareEvalVariableNode this
      LocalVariableTable:
        Start  End  Slot                   Name  Signature
            0    8     0                   this  Lcom/oracle/truffle/js/nodes/access/DeclareEvalVariableNode;
            0    8     1                context  Lcom/oracle/truffle/js/runtime/JSContext;
            0    8     2                varName  Ljava/lang/String;
            0    8     3       dynamicScopeNode  Lcom/oracle/truffle/js/nodes/JavaScriptNode;
            0    8     4  writeDynamicScopeNode  Lcom/oracle/truffle/js/nodes/access/WriteNode;
    MethodParameters:
                       Name  Flags
      context                
      varName                
      dynamicScopeNode       
      writeDynamicScopeNode  

  public java.lang.Object execute(com.oracle.truffle.api.frame.VirtualFrame);
    descriptor: (Lcom/oracle/truffle/api/frame/VirtualFrame;)Ljava/lang/Object;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=3, args_size=2
        start local 0 // com.oracle.truffle.js.nodes.access.DeclareEvalVariableNode this
        start local 1 // com.oracle.truffle.api.frame.VirtualFrame frame
         0: .line 74
            aload 0 /* this */
            getfield com.oracle.truffle.js.nodes.access.DeclareEvalVariableNode.dynamicScopeNode:Lcom/oracle/truffle/js/nodes/JavaScriptNode;
            aload 1 /* frame */
            invokevirtual com.oracle.truffle.js.nodes.JavaScriptNode.execute:(Lcom/oracle/truffle/api/frame/VirtualFrame;)Ljava/lang/Object;
            checkcast com.oracle.truffle.api.object.DynamicObject
            astore 2 /* dynamicScope */
        start local 2 // com.oracle.truffle.api.object.DynamicObject dynamicScope
         1: .line 75
            aload 2 /* dynamicScope */
            getstatic com.oracle.truffle.js.runtime.objects.Undefined.instance:Lcom/oracle/truffle/js/runtime/objects/JSDynamicObject;
            if_acmpne 4
         2: .line 77
            aload 0 /* this */
            getfield com.oracle.truffle.js.nodes.access.DeclareEvalVariableNode.context:Lcom/oracle/truffle/js/runtime/JSContext;
            invokestatic com.oracle.truffle.js.runtime.builtins.JSOrdinary.createWithNullPrototype:(Lcom/oracle/truffle/js/runtime/JSContext;)Lcom/oracle/truffle/api/object/DynamicObject;
            astore 2 /* dynamicScope */
         3: .line 78
            aload 0 /* this */
            getfield com.oracle.truffle.js.nodes.access.DeclareEvalVariableNode.initScopeNode:Lcom/oracle/truffle/js/nodes/access/WriteNode;
            aload 1 /* frame */
            aload 2 /* dynamicScope */
            invokeinterface com.oracle.truffle.js.nodes.access.WriteNode.executeWrite:(Lcom/oracle/truffle/api/frame/VirtualFrame;Ljava/lang/Object;)Ljava/lang/Object;
            pop
         4: .line 80
      StackMap locals: com.oracle.truffle.api.object.DynamicObject
      StackMap stack:
            getstatic com.oracle.truffle.js.nodes.access.DeclareEvalVariableNode.$assertionsDisabled:Z
            ifne 5
            aload 2 /* dynamicScope */
            invokestatic com.oracle.truffle.js.nodes.access.DeclareEvalVariableNode.isValidDynamicScopeObject:(Lcom/oracle/truffle/api/object/DynamicObject;)Z
            ifne 5
            new java.lang.AssertionError
            dup
            invokespecial java.lang.AssertionError.<init>:()V
            athrow
         5: .line 81
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield com.oracle.truffle.js.nodes.access.DeclareEvalVariableNode.hasProperty:Lcom/oracle/truffle/js/nodes/access/HasPropertyCacheNode;
            aload 2 /* dynamicScope */
            invokevirtual com.oracle.truffle.js.nodes.access.HasPropertyCacheNode.hasProperty:(Ljava/lang/Object;)Z
            ifne 8
         6: .line 83
            getstatic com.oracle.truffle.js.nodes.access.DeclareEvalVariableNode.$assertionsDisabled:Z
            ifne 7
            aload 1 /* frame */
            invokeinterface com.oracle.truffle.api.frame.VirtualFrame.getFrameDescriptor:()Lcom/oracle/truffle/api/frame/FrameDescriptor;
            aload 0 /* this */
            getfield com.oracle.truffle.js.nodes.access.DeclareEvalVariableNode.varName:Ljava/lang/String;
            invokevirtual com.oracle.truffle.api.frame.FrameDescriptor.findFrameSlot:(Ljava/lang/Object;)Lcom/oracle/truffle/api/frame/FrameSlot;
            ifnull 7
            new java.lang.AssertionError
            dup
            invokespecial java.lang.AssertionError.<init>:()V
            athrow
         7: .line 84
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield com.oracle.truffle.js.nodes.access.DeclareEvalVariableNode.defineProperty:Lcom/oracle/truffle/js/nodes/access/PropertySetNode;
            aload 2 /* dynamicScope */
            getstatic com.oracle.truffle.js.runtime.objects.Undefined.instance:Lcom/oracle/truffle/js/runtime/objects/JSDynamicObject;
            invokevirtual com.oracle.truffle.js.nodes.access.PropertySetNode.setValue:(Ljava/lang/Object;Ljava/lang/Object;)V
         8: .line 86
      StackMap locals:
      StackMap stack:
            getstatic com.oracle.truffle.js.nodes.access.DeclareEvalVariableNode.EMPTY:Ljava/lang/Object;
            areturn
        end local 2 // com.oracle.truffle.api.object.DynamicObject dynamicScope
        end local 1 // com.oracle.truffle.api.frame.VirtualFrame frame
        end local 0 // com.oracle.truffle.js.nodes.access.DeclareEvalVariableNode this
      LocalVariableTable:
        Start  End  Slot          Name  Signature
            0    9     0          this  Lcom/oracle/truffle/js/nodes/access/DeclareEvalVariableNode;
            0    9     1         frame  Lcom/oracle/truffle/api/frame/VirtualFrame;
            1    9     2  dynamicScope  Lcom/oracle/truffle/api/object/DynamicObject;
    MethodParameters:
       Name  Flags
      frame  

  private static boolean isValidDynamicScopeObject(com.oracle.truffle.api.object.DynamicObject);
    descriptor: (Lcom/oracle/truffle/api/object/DynamicObject;)Z
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // com.oracle.truffle.api.object.DynamicObject dynamicScope
         0: .line 90
            aload 0 /* dynamicScope */
            getstatic com.oracle.truffle.js.runtime.objects.Undefined.instance:Lcom/oracle/truffle/js/runtime/objects/JSDynamicObject;
            if_acmpeq 1
            aload 0 /* dynamicScope */
            getstatic com.oracle.truffle.js.runtime.objects.Null.instance:Lcom/oracle/truffle/js/runtime/objects/JSDynamicObject;
            if_acmpeq 1
            aload 0 /* dynamicScope */
            ifnull 1
            iconst_1
            ireturn
      StackMap locals:
      StackMap stack:
         1: iconst_0
            ireturn
        end local 0 // com.oracle.truffle.api.object.DynamicObject dynamicScope
      LocalVariableTable:
        Start  End  Slot          Name  Signature
            0    2     0  dynamicScope  Lcom/oracle/truffle/api/object/DynamicObject;
    MethodParameters:
              Name  Flags
      dynamicScope  

  public java.lang.String getName();
    descriptor: ()Ljava/lang/String;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.oracle.truffle.js.nodes.access.DeclareEvalVariableNode this
         0: .line 94
            aload 0 /* this */
            getfield com.oracle.truffle.js.nodes.access.DeclareEvalVariableNode.varName:Ljava/lang/String;
            areturn
        end local 0 // com.oracle.truffle.js.nodes.access.DeclareEvalVariableNode this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/oracle/truffle/js/nodes/access/DeclareEvalVariableNode;

  protected com.oracle.truffle.js.nodes.JavaScriptNode copyUninitialized(java.util.Set<java.lang.Class<? extends com.oracle.truffle.api.instrumentation.Tag>>);
    descriptor: (Ljava/util/Set;)Lcom/oracle/truffle/js/nodes/JavaScriptNode;
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=7, locals=2, args_size=2
        start local 0 // com.oracle.truffle.js.nodes.access.DeclareEvalVariableNode this
        start local 1 // java.util.Set materializedTags
         0: .line 99
            new com.oracle.truffle.js.nodes.access.DeclareEvalVariableNode
            dup
            aload 0 /* this */
            getfield com.oracle.truffle.js.nodes.access.DeclareEvalVariableNode.context:Lcom/oracle/truffle/js/runtime/JSContext;
            aload 0 /* this */
            getfield com.oracle.truffle.js.nodes.access.DeclareEvalVariableNode.varName:Ljava/lang/String;
            aload 0 /* this */
            getfield com.oracle.truffle.js.nodes.access.DeclareEvalVariableNode.dynamicScopeNode:Lcom/oracle/truffle/js/nodes/JavaScriptNode;
            aload 1 /* materializedTags */
            invokestatic com.oracle.truffle.js.nodes.access.DeclareEvalVariableNode.cloneUninitialized:(Lcom/oracle/truffle/js/nodes/JavaScriptNode;Ljava/util/Set;)Lcom/oracle/truffle/js/nodes/JavaScriptNode;
            aload 0 /* this */
            getfield com.oracle.truffle.js.nodes.access.DeclareEvalVariableNode.initScopeNode:Lcom/oracle/truffle/js/nodes/access/WriteNode;
            checkcast com.oracle.truffle.js.nodes.JavaScriptNode
            aload 1 /* materializedTags */
            invokestatic com.oracle.truffle.js.nodes.access.DeclareEvalVariableNode.cloneUninitialized:(Lcom/oracle/truffle/js/nodes/JavaScriptNode;Ljava/util/Set;)Lcom/oracle/truffle/js/nodes/JavaScriptNode;
            checkcast com.oracle.truffle.js.nodes.access.WriteNode
            invokespecial com.oracle.truffle.js.nodes.access.DeclareEvalVariableNode.<init>:(Lcom/oracle/truffle/js/runtime/JSContext;Ljava/lang/String;Lcom/oracle/truffle/js/nodes/JavaScriptNode;Lcom/oracle/truffle/js/nodes/access/WriteNode;)V
            areturn
        end local 1 // java.util.Set materializedTags
        end local 0 // com.oracle.truffle.js.nodes.access.DeclareEvalVariableNode this
      LocalVariableTable:
        Start  End  Slot              Name  Signature
            0    1     0              this  Lcom/oracle/truffle/js/nodes/access/DeclareEvalVariableNode;
            0    1     1  materializedTags  Ljava/util/Set<Ljava/lang/Class<+Lcom/oracle/truffle/api/instrumentation/Tag;>;>;
    Signature: (Ljava/util/Set<Ljava/lang/Class<+Lcom/oracle/truffle/api/instrumentation/Tag;>;>;)Lcom/oracle/truffle/js/nodes/JavaScriptNode;
    MethodParameters:
                  Name  Flags
      materializedTags  
}
SourceFile: "DeclareEvalVariableNode.java"
InnerClasses:
  public abstract Child = com.oracle.truffle.api.nodes.Node$Child of com.oracle.truffle.api.nodes.Node