JSTests/test262/test/language/statements/const/block-local-use-before-initialization-in-prior-statement.js

// Copyright (C) 2011 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es6id: 13.1
description: >
    const: block local use before initialization in prior statement.
    (TDZ, Temporal Dead Zone)
---*/

assert.throws(ReferenceError, function() {
  {
    x; const x = 1;
  }
});