==== tests/cases/compiler/inferentialTypingWithObjectLiteralProperties.ts (2 errors) ====
    function f<T>(x: T, y: T): T {
    return x;
    }
    f({ x: [null] }, { x: [1] }).x[0] = "" // ok
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
!!! Type 'string' is not assignable to type 'number'.
    f({ x: [1] }, { x: [null] }).x[0] = "" // was error TS2011: Cannot convert 'string' to 'number'.
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
!!! Type 'string' is not assignable to type 'number'.