No error accessing private property in destructuring assignment

[ajafff]

TypeScript Version: 3.1.0-dev.20180808

Search Terms: private destructuring

Code

class Foo {
    private bar = 1;
}
let foo = new Foo();

let bar: number;
({bar} = foo); // no error
({bar: bar} = foo); // no error

Expected behavior:

Error on both destructuring assignments.

Since element access on private properties is allowed (#26328), how would you expect the following to behave?

({'bar': bar} = foo);
({['bar']: bar} = foo);

Actual behavior:

No error

Playground Link: https://agentcooper.github.io/typescript-play/#code/MYGwhgzhAEBiD29oG8BQ0PQA4CcCWAbmAC4Cm0ARmDtALzQCMA3KgL6oinHQBmid0AHakA7nEQAKAJQsOXStQBcQgK4BbCqRwsJyKjlYC+8GdAD0ZoUi054OVLv3L9h+sdMWr0G3aA

Related Issues: #26328