=== tests/cases/compiler/commaOperator1.ts ===
var v1 = ((1, 2, 3), 4, 5, (6, 7));
>v1 : Symbol(v1, Decl(commaOperator1.ts, 0, 3))

function f1() {
>f1 : Symbol(f1, Decl(commaOperator1.ts, 0, 35))

    var a = 1;
>a : Symbol(a, Decl(commaOperator1.ts, 2, 7))

    return a, v1, a;
>a : Symbol(a, Decl(commaOperator1.ts, 2, 7))
>v1 : Symbol(v1, Decl(commaOperator1.ts, 0, 3))
>a : Symbol(a, Decl(commaOperator1.ts, 2, 7))
}