What are the VarScopedDeclarations and VarDeclaredNames of a non-empty block statement according to ECMAScript spec?

I’m studying the ECMAScript spec to find out what the expected behavior of vars statements inside a block is according to the spec:

function test() {
    console.log('before block', bar);
    {
      console.log('in block before declaration', bar);
      var bar = 30;
      console.log('in block after declaration', bar); 
    }
    console.log('after block', bar);
}

test();

The DeclarationInstantiation semantics indicate that variables declared with var are collected by VarDeclaredNames and VarScopedDeclarations semantics. But the spec only defined the semantics for empty block without any statement:

How could I know what the VarDeclaredNames and VarScopedDeclarations of Block { statementList } should be?

I found other semantics include Block { statementList }, so I expect the VarDeclaredNames and VarScopedDeclarations may consist of it too, or how should the implementations treat block without instructions?