==== tests/cases/compiler/interfaceDeclaration3.ts (3 errors) ====
    interface I1 { item:number; }
    
    module M1 {
        interface I1 { item:string; }  
        interface I2 { item:number; }   
        class C1 implements I1 {
              ~~
!!! interfaceDeclaration3.ts(6,11): error TS2137: Class C1 declares interface I1 but does not implement it:
!!! 	Types of property 'item' of types 'C1' and 'I1' are incompatible.
            public item:number;
        }
        class C2 implements I1 {
            public item:string;
        }
        class C3 implements I2 {
            public item:number;
        }
        
        class C4 implements M2.I1 { 
            public item:string;
        }
    
        class C5 implements M2.M3.I1 {
            public item:string;
        }
    }
    
    export module M2 {
        export interface I1 { item:string; }
        export interface I2 { item:string; }
        export module M3 {
            export interface I1 { item:string; }
        }
        class C1 implements I1 {
              ~~
!!! interfaceDeclaration3.ts(31,11): error TS2137: Class C1 declares interface I1 but does not implement it:
!!! 	Types of property 'item' of types 'C1' and 'I1' are incompatible.
            public item:number;    
        }
        class C2 implements I1 {
            public item:string;    
        }
        class C3 implements I2 {
            public item:string;    
        }
    }
    
    class C1 implements I1 {
        public item:number;
    }
    
    class C2 implements M2.I1 { 
        public item:string;
    }
    
    class C3 implements M2.M3.I1 {
        public item:string;
    }
    
    interface I2 extends I1 { item:string; }
              ~~
!!! interfaceDeclaration3.ts(54,11): error TS2143: Interface 'I2' cannot extend interface 'I1':
!!! 	Types of property 'item' of types 'I2' and 'I1' are incompatible.
    