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// Copyright (C) 2018 Kevin Gibbons. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-super-keyword-runtime-semantics-evaluation
description: >
when calling `super()` for a second time in a derived class, the super constructor is run twice but the field initializers are only run once
info: |
[...]
6. Let result be ? Construct(func, argList, newTarget).
[...]
10. Perform ? thisER.BindThisValue(result).
11. Perform ? InitializeInstanceFields(result, F).
[...]
features: [class-fields-public]
---*/
var baseCtorCalled = 0;
var fieldInitCalled = 0;
class Base {
constructor() {
++baseCtorCalled;
}
}
var C = class extends Base {
field = ++fieldInitCalled;
constructor() {
assert.sameValue(baseCtorCalled, 0);
assert.sameValue(fieldInitCalled, 0);
super();
assert.sameValue(baseCtorCalled, 1);
assert.sameValue(fieldInitCalled, 1);
assert.throws(ReferenceError, () => super());
}
};
new C();
assert.sameValue(baseCtorCalled, 2);
assert.sameValue(fieldInitCalled, 1);
reportCompare(0, 0);