==== tests/cases/conformance/types/typeRelationships/assignmentCompatibility/assignmentCompatWithStringIndexer3.ts (3 errors) ====
    // Derived type indexer must be subtype of base type indexer
    
    interface Base { foo: string; }
    interface Derived extends Base { bar: string; }
    interface Derived2 extends Derived { baz: string; }
    
    var a: A;
           ~
!!! Cannot find name 'A'.
    var b1: { [x: string]: string; }
    a = b1; // error
    b1 = a; // error
    
    module Generics {
        class A<T extends Derived> {
            [x: string]: T;
        }
       
        function foo<T extends Derived>() {
            var a: A<T>;
            var b: { [x: string]: string; }
            a = b; // error
            ~
!!! Type '{ [x: string]: string; }' is not assignable to type 'A<T>':
!!!   Index signatures are incompatible:
!!!     Type 'string' is not assignable to type 'T'.
            b = a; // error
            ~
!!! Type 'A<T>' is not assignable to type '{ [x: string]: string; }':
!!!   Index signatures are incompatible:
!!!     Type 'T' is not assignable to type 'string'.
        }
    }