Implements readonly property should be readonly

[dungdm93]

TypeScript Version: 2.0.3

Code

interface I {
    readonly name: string;
}

class C implements I {
    public name: string;
}

let c: C = new C();
c.name= "I going to change it";

Expected behavior:
Compilation error. C.name should be declared as readonly.

Actual behavior:
Compilation success. No errors/warnings

[aluanhaddad]

The class correctly implements the interface. I know this is a duplicate but I can't seem to find the corresponding issue.

Regardless, readable & writable is assignable to readable.

[mhegazy]

thanks @aluanhaddad

[yortus]

TypeScript is allowing assignment both ways - shouldn't there be a compile error in the following? (There might be an issue open for that but I couldn't find one).

interface I {
    readonly name: string;
}

interface C {
    name: string;
}

let i: I;
let c: C;

i = c; // OK, readable & writable is assignable to readable
c = i; // OK but why? readable shouldn't be assignable to readable & writable

[mhegazy]

@yortus I believe #11481 covers this request.

[yortus]

Yes that's it exactly, thanks @mhegazy