src/generators/yield-spread-obj.case

// Copyright (C) 2017 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
desc: Use yield value in a object spread position
template: default
info: |
  Spread Properties

  PropertyDefinition[Yield]:
    (...)
    ...AssignmentExpression[In, ?Yield]
features: [object-spread]
---*/

//- body
  yield {
    ...yield,
    y: 1,
    ...yield yield,
  };
//- assertions
iter.next();
iter.next({ x: 42 });
iter.next({ x: 'lol' });
var item = iter.next({ y: 39 });

assert.sameValue(item.value.x, 42);
assert.sameValue(item.value.y, 39);
assert.sameValue(Object.keys(item.value).length, 2);
assert.sameValue(item.done, false);