Anonymous interfaces embedded in other interfaces should be type-checked

[zakjan]

item.ts

export interface Item {
    attributes: {
        name: string;
    };
}

test.ts

import {Item} from "./item";

export class TestViewModel {
    item: Item;
}

test.html

<template>
    ${item.attributes.aaa}
</template>

This should throw a warning about missing attribute aaa, but it is not detected.

---

Note that if I extract attributes object into a separate interface, it starts working.

item.ts

export interface ItemAttributes {
    name: string;
}

export interface Item {
    attributes: ItemAttributes;
}

cannot find 'aaa' in type 'ItemAttributes' Ln 3 Col 5 /src/demo/vm/data/test.html

In this case, I think that message "cannot find 'attributes.aaa' in type 'Item'" would be more helpful, because anyway that's the same message that will probably be displayed in the first case.

[zakjan]

Duplicate of #65, closing.