=== tests/cases/compiler/recursiveTypeComparison.ts ===
// Before fix this would take an exceeding long time to complete (#1170)

interface Observable<T> {
>Observable : Symbol(Observable, Decl(recursiveTypeComparison.ts, 0, 0))
>T : Symbol(T, Decl(recursiveTypeComparison.ts, 2, 21))

    // This member can't be of type T, Property<T>, or Observable<anything but T>
    needThisOne: Observable<T>;
>needThisOne : Symbol(needThisOne, Decl(recursiveTypeComparison.ts, 2, 25))
>Observable : Symbol(Observable, Decl(recursiveTypeComparison.ts, 0, 0))
>T : Symbol(T, Decl(recursiveTypeComparison.ts, 2, 21))

    // Add more to make it slower
    expo1: Property<T[]>; //  0.31 seconds in check
>expo1 : Symbol(expo1, Decl(recursiveTypeComparison.ts, 4, 31))
>Property : Symbol(Property, Decl(recursiveTypeComparison.ts, 9, 1))
>T : Symbol(T, Decl(recursiveTypeComparison.ts, 2, 21))

    expo2: Property<T[]>; //  3.11 seconds
>expo2 : Symbol(expo2, Decl(recursiveTypeComparison.ts, 6, 25))
>Property : Symbol(Property, Decl(recursiveTypeComparison.ts, 9, 1))
>T : Symbol(T, Decl(recursiveTypeComparison.ts, 2, 21))

    expo3: Property<T[]>; // 82.28 seconds
>expo3 : Symbol(expo3, Decl(recursiveTypeComparison.ts, 7, 25))
>Property : Symbol(Property, Decl(recursiveTypeComparison.ts, 9, 1))
>T : Symbol(T, Decl(recursiveTypeComparison.ts, 2, 21))
}
interface Property<T> extends Observable<T> { }
>Property : Symbol(Property, Decl(recursiveTypeComparison.ts, 9, 1))
>T : Symbol(T, Decl(recursiveTypeComparison.ts, 10, 19))
>Observable : Symbol(Observable, Decl(recursiveTypeComparison.ts, 0, 0))
>T : Symbol(T, Decl(recursiveTypeComparison.ts, 10, 19))

var p: Observable<{}>;
>p : Symbol(p, Decl(recursiveTypeComparison.ts, 12, 3))
>Observable : Symbol(Observable, Decl(recursiveTypeComparison.ts, 0, 0))

var stuck: Property<number> = p;
>stuck : Symbol(stuck, Decl(recursiveTypeComparison.ts, 13, 3))
>Property : Symbol(Property, Decl(recursiveTypeComparison.ts, 9, 1))
>p : Symbol(p, Decl(recursiveTypeComparison.ts, 12, 3))