Revision control

Copy as Markdown

// Copyright (C) 2017 Caio Lima. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
desc: Object Spread properties overrides previous definitions
template: default
esid: pending
info: |
Pending Runtime Semantics: PropertyDefinitionEvaluation
PropertyDefinition:...AssignmentExpression
1. Let exprValue be the result of evaluating AssignmentExpression.
2. Let fromValue be GetValue(exprValue).
3. ReturnIfAbrupt(fromValue).
4. Let excludedNames be a new empty List.
5. Return CopyDataProperties(object, fromValue, excludedNames).
features: [object-spread]
---*/
//- setup
let o = {a: 2, b: 3};
//- args
{a: 1, b: 7, ...o}
//- params
obj
//- body
assert.sameValue(obj.a, 2);
assert.sameValue(obj.b, 3);
assert.sameValue(Object.keys(obj).length, 2);
assert.sameValue(o.a, 2);
assert.sameValue(o.b, 3);