Typescript could not resolve typing error

[artem-malko]

TypeScript Version: 2.3.3

Code

interface Animal {
    name: string;
    size: {
        w?: number;
        h?: number;
    };
}

var dog: Animal = {
    name: 'John',
    size: 'asd',
}

And you can open the link from typescript playground.

Expected behavior:

Typing error, because size is not a string, it is an object with specific shape.

Actual behavior:

No errors.

[ctizen]

Looks like it treats literal string as object, and it matches declared object shape which may be empty. I'm not sure if this is expected behavior.

[artem-malko]

Sorry, I've just found the same issue In Progress) #7485