tests/cases/conformance/interfaces/interfaceDeclarations/interfaceExtendsObjectIntersectionErrors.ts(7,11): error TS2430: Interface 'I1' incorrectly extends interface 'T1'.
  Types of property 'a' are incompatible.
    Type 'string' is not assignable to type 'number'.
tests/cases/conformance/interfaces/interfaceDeclarations/interfaceExtendsObjectIntersectionErrors.ts(8,11): error TS2430: Interface 'I2' incorrectly extends interface 'T2'.
  Type 'I2' is not assignable to type '{ b: number; }'.
    Types of property 'b' are incompatible.
      Type 'string' is not assignable to type 'number'.
tests/cases/conformance/interfaces/interfaceDeclarations/interfaceExtendsObjectIntersectionErrors.ts(9,11): error TS2430: Interface 'I3' incorrectly extends interface 'number[]'.
  Types of property 'length' are incompatible.
    Type 'string' is not assignable to type 'number'.
tests/cases/conformance/interfaces/interfaceDeclarations/interfaceExtendsObjectIntersectionErrors.ts(10,11): error TS2430: Interface 'I4' incorrectly extends interface '[string, number]'.
  Types of property '0' are incompatible.
    Type 'number' is not assignable to type 'string'.
tests/cases/conformance/interfaces/interfaceDeclarations/interfaceExtendsObjectIntersectionErrors.ts(11,11): error TS2430: Interface 'I5' incorrectly extends interface 'T5'.
  Types of property 'c' are incompatible.
    Type 'number' is not assignable to type 'string'.
tests/cases/conformance/interfaces/interfaceDeclarations/interfaceExtendsObjectIntersectionErrors.ts(16,38): error TS2416: Property 'a' in type 'C1' is not assignable to the same property in base type 'T1'.
  Type 'string' is not assignable to type 'number'.
tests/cases/conformance/interfaces/interfaceDeclarations/interfaceExtendsObjectIntersectionErrors.ts(17,38): error TS2416: Property 'b' in type 'C2' is not assignable to the same property in base type 'T2'.
  Type 'string' is not assignable to type 'number'.
tests/cases/conformance/interfaces/interfaceDeclarations/interfaceExtendsObjectIntersectionErrors.ts(18,38): error TS2416: Property 'length' in type 'C3' is not assignable to the same property in base type 'number[]'.
  Type 'string' is not assignable to type 'number'.
tests/cases/conformance/interfaces/interfaceDeclarations/interfaceExtendsObjectIntersectionErrors.ts(19,38): error TS2416: Property '0' in type 'C4' is not assignable to the same property in base type '[string, number]'.
  Type 'number' is not assignable to type 'string'.
tests/cases/conformance/interfaces/interfaceDeclarations/interfaceExtendsObjectIntersectionErrors.ts(20,38): error TS2416: Property 'c' in type 'C5' is not assignable to the same property in base type 'T5'.
  Type 'number' is not assignable to type 'string'.
tests/cases/conformance/interfaces/interfaceDeclarations/interfaceExtendsObjectIntersectionErrors.ts(30,11): error TS2430: Interface 'I10' incorrectly extends interface 'typeof CX'.
  Types of property 'a' are incompatible.
    Type 'number' is not assignable to type 'string'.
tests/cases/conformance/interfaces/interfaceDeclarations/interfaceExtendsObjectIntersectionErrors.ts(31,11): error TS2430: Interface 'I11' incorrectly extends interface 'typeof EX'.
  Types of property 'C' are incompatible.
    Type 'string' is not assignable to type 'EX'.
tests/cases/conformance/interfaces/interfaceDeclarations/interfaceExtendsObjectIntersectionErrors.ts(32,11): error TS2430: Interface 'I12' incorrectly extends interface 'typeof NX'.
  Types of property 'a' are incompatible.
    Type 'number' is not assignable to type '"hello"'.
tests/cases/conformance/interfaces/interfaceDeclarations/interfaceExtendsObjectIntersectionErrors.ts(33,29): error TS2411: Property 'a' of type 'string' is not assignable to string index type 'number'.
tests/cases/conformance/interfaces/interfaceDeclarations/interfaceExtendsObjectIntersectionErrors.ts(33,29): error TS2411: Property 'prototype' of type 'CX' is not assignable to string index type 'number'.
tests/cases/conformance/interfaces/interfaceDeclarations/interfaceExtendsObjectIntersectionErrors.ts(34,29): error TS2413: Numeric index type 'string' is not assignable to string index type 'number'.
tests/cases/conformance/interfaces/interfaceDeclarations/interfaceExtendsObjectIntersectionErrors.ts(35,29): error TS2411: Property 'a' of type '"hello"' is not assignable to string index type 'number'.
tests/cases/conformance/interfaces/interfaceDeclarations/interfaceExtendsObjectIntersectionErrors.ts(39,11): error TS2430: Interface 'I20' incorrectly extends interface 'Partial<T1>'.
  Types of property 'a' are incompatible.
    Type 'string' is not assignable to type 'number | undefined'.
tests/cases/conformance/interfaces/interfaceDeclarations/interfaceExtendsObjectIntersectionErrors.ts(40,11): error TS2430: Interface 'I21' incorrectly extends interface 'Readonly<T1>'.
  Types of property 'a' are incompatible.
    Type 'string' is not assignable to type 'number'.
tests/cases/conformance/interfaces/interfaceDeclarations/interfaceExtendsObjectIntersectionErrors.ts(41,11): error TS2430: Interface 'I22' incorrectly extends interface 'Identifiable<T1>'.
  Type 'I22' is not assignable to type 'T1'.
    Types of property 'a' are incompatible.
      Type 'string' is not assignable to type 'number'.
tests/cases/conformance/interfaces/interfaceDeclarations/interfaceExtendsObjectIntersectionErrors.ts(42,11): error TS2430: Interface 'I23' incorrectly extends interface 'Identifiable<T1 & { b: number; }>'.
  Type 'I23' is not assignable to type 'T1'.
    Types of property 'a' are incompatible.
      Type 'string' is not assignable to type 'number'.
tests/cases/conformance/interfaces/interfaceDeclarations/interfaceExtendsObjectIntersectionErrors.ts(46,23): error TS2312: An interface may only extend a class or another interface.
tests/cases/conformance/interfaces/interfaceDeclarations/interfaceExtendsObjectIntersectionErrors.ts(47,26): error TS2312: An interface may only extend a class or another interface.


==== tests/cases/conformance/interfaces/interfaceDeclarations/interfaceExtendsObjectIntersectionErrors.ts (23 errors) ====
    type T1 = { a: number };
    type T2 = T1 & { b: number };
    type T3 = number[];
    type T4 = [string, number];
    type T5 = { [P in 'a' | 'b' | 'c']: string };
    
    interface I1 extends T1 { a: string }
              ~~
!!! error TS2430: Interface 'I1' incorrectly extends interface 'T1'.
!!! error TS2430:   Types of property 'a' are incompatible.
!!! error TS2430:     Type 'string' is not assignable to type 'number'.
    interface I2 extends T2 { b: string }
              ~~
!!! error TS2430: Interface 'I2' incorrectly extends interface 'T2'.
!!! error TS2430:   Type 'I2' is not assignable to type '{ b: number; }'.
!!! error TS2430:     Types of property 'b' are incompatible.
!!! error TS2430:       Type 'string' is not assignable to type 'number'.
    interface I3 extends T3 { length: string }
              ~~
!!! error TS2430: Interface 'I3' incorrectly extends interface 'number[]'.
!!! error TS2430:   Types of property 'length' are incompatible.
!!! error TS2430:     Type 'string' is not assignable to type 'number'.
    interface I4 extends T4 { 0: number }
              ~~
!!! error TS2430: Interface 'I4' incorrectly extends interface '[string, number]'.
!!! error TS2430:   Types of property '0' are incompatible.
!!! error TS2430:     Type 'number' is not assignable to type 'string'.
    interface I5 extends T5 { c: number }
              ~~
!!! error TS2430: Interface 'I5' incorrectly extends interface 'T5'.
!!! error TS2430:   Types of property 'c' are incompatible.
!!! error TS2430:     Type 'number' is not assignable to type 'string'.
    
    type Constructor<T> = new () => T;
    declare function Constructor<T>(): Constructor<T>;
    
    class C1 extends Constructor<T1>() { a: string }
                                         ~
!!! error TS2416: Property 'a' in type 'C1' is not assignable to the same property in base type 'T1'.
!!! error TS2416:   Type 'string' is not assignable to type 'number'.
    class C2 extends Constructor<T2>() { b: string }
                                         ~
!!! error TS2416: Property 'b' in type 'C2' is not assignable to the same property in base type 'T2'.
!!! error TS2416:   Type 'string' is not assignable to type 'number'.
    class C3 extends Constructor<T3>() { length: string }
                                         ~~~~~~
!!! error TS2416: Property 'length' in type 'C3' is not assignable to the same property in base type 'number[]'.
!!! error TS2416:   Type 'string' is not assignable to type 'number'.
    class C4 extends Constructor<T4>() { 0: number }
                                         ~
!!! error TS2416: Property '0' in type 'C4' is not assignable to the same property in base type '[string, number]'.
!!! error TS2416:   Type 'number' is not assignable to type 'string'.
    class C5 extends Constructor<T5>() { c: number }
                                         ~
!!! error TS2416: Property 'c' in type 'C5' is not assignable to the same property in base type 'T5'.
!!! error TS2416:   Type 'number' is not assignable to type 'string'.
    
    declare class CX { static a: string }
    declare enum EX { A, B, C }
    declare namespace NX { export const a = "hello" }
    
    type TCX = typeof CX;
    type TEX = typeof EX;
    type TNX = typeof NX;
    
    interface I10 extends TCX { a: number }
              ~~~
!!! error TS2430: Interface 'I10' incorrectly extends interface 'typeof CX'.
!!! error TS2430:   Types of property 'a' are incompatible.
!!! error TS2430:     Type 'number' is not assignable to type 'string'.
    interface I11 extends TEX { C: string }
              ~~~
!!! error TS2430: Interface 'I11' incorrectly extends interface 'typeof EX'.
!!! error TS2430:   Types of property 'C' are incompatible.
!!! error TS2430:     Type 'string' is not assignable to type 'EX'.
    interface I12 extends TNX { a: number }
              ~~~
!!! error TS2430: Interface 'I12' incorrectly extends interface 'typeof NX'.
!!! error TS2430:   Types of property 'a' are incompatible.
!!! error TS2430:     Type 'number' is not assignable to type '"hello"'.
    interface I14 extends TCX { [x: string]: number }
                                ~~~~~~~~~~~~~~~~~~~
!!! error TS2411: Property 'a' of type 'string' is not assignable to string index type 'number'.
                                ~~~~~~~~~~~~~~~~~~~
!!! error TS2411: Property 'prototype' of type 'CX' is not assignable to string index type 'number'.
    interface I15 extends TEX { [x: string]: number }
                                ~~~~~~~~~~~~~~~~~~~
!!! error TS2413: Numeric index type 'string' is not assignable to string index type 'number'.
    interface I16 extends TNX { [x: string]: number }
                                ~~~~~~~~~~~~~~~~~~~
!!! error TS2411: Property 'a' of type '"hello"' is not assignable to string index type 'number'.
    
    type Identifiable<T> = { _id: string } & T;
    
    interface I20 extends Partial<T1> { a: string }
              ~~~
!!! error TS2430: Interface 'I20' incorrectly extends interface 'Partial<T1>'.
!!! error TS2430:   Types of property 'a' are incompatible.
!!! error TS2430:     Type 'string' is not assignable to type 'number | undefined'.
    interface I21 extends Readonly<T1> { a: string }
              ~~~
!!! error TS2430: Interface 'I21' incorrectly extends interface 'Readonly<T1>'.
!!! error TS2430:   Types of property 'a' are incompatible.
!!! error TS2430:     Type 'string' is not assignable to type 'number'.
    interface I22 extends Identifiable<T1> { a: string }
              ~~~
!!! error TS2430: Interface 'I22' incorrectly extends interface 'Identifiable<T1>'.
!!! error TS2430:   Type 'I22' is not assignable to type 'T1'.
!!! error TS2430:     Types of property 'a' are incompatible.
!!! error TS2430:       Type 'string' is not assignable to type 'number'.
    interface I23 extends Identifiable<T1 & { b: number}> { a: string }
              ~~~
!!! error TS2430: Interface 'I23' incorrectly extends interface 'Identifiable<T1 & { b: number; }>'.
!!! error TS2430:   Type 'I23' is not assignable to type 'T1'.
!!! error TS2430:     Types of property 'a' are incompatible.
!!! error TS2430:       Type 'string' is not assignable to type 'number'.
    
    type U = { a: number } | { b: string };
    
    interface I30 extends U { x: string }
                          ~
!!! error TS2312: An interface may only extend a class or another interface.
    interface I31<T> extends T { x: string }
                             ~
!!! error TS2312: An interface may only extend a class or another interface.
    