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tests/cases/compiler/constraints0.ts(14,11): error TS2344: Type 'B' does not satisfy the constraint 'A'.
Property 'a' is missing in type 'B'.
==== tests/cases/compiler/constraints0.ts (1 errors) ====
interface A {
a: number;
}
interface B {
b: string;
}
interface C<T extends A> {
x: T;
}
var v1: C<A>; // should work
var v2: C<B>; // should not work
~
!!! error TS2344: Type 'B' does not satisfy the constraint 'A'.
!!! error TS2344: Property 'a' is missing in type 'B'.
var y = v1.x.a; // 'a' should be of type 'number'
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