boolean field mock changes to function on access

[FreifeldRoyi]

After defining a mock for a class with values

const mock = mock<MyClass>({ b: false, s: 'someText' }); // option 1
...
const mock = mock<MyClass>(); // option 2
mock.b = false

and accessing it with mock.b the field changes to a function mockConstructor () ....
What's even more weird is that mock.s returns someText as expected

[marchaos]

Pr open for this.