=== tests/cases/compiler/genericTypeParameterEquivalence2.ts ===
// compose :: (b->c) -> (a->b) -> (a->c)
function compose<A, B, C>(f: (b: B) => C, g: (a:A) => B): (a:A) => C {
>compose : <A, B, C>(f: (b: B) => C, g: (a: A) => B) => (a: A) => C, Symbol(compose, Decl(genericTypeParameterEquivalence2.ts, 0, 0))
>A : A, Symbol(A, Decl(genericTypeParameterEquivalence2.ts, 1, 17))
>B : B, Symbol(B, Decl(genericTypeParameterEquivalence2.ts, 1, 19))
>C : C, Symbol(C, Decl(genericTypeParameterEquivalence2.ts, 1, 22))
>f : (b: B) => C, Symbol(f, Decl(genericTypeParameterEquivalence2.ts, 1, 26))
>b : B, Symbol(b, Decl(genericTypeParameterEquivalence2.ts, 1, 30))
>B : B, Symbol(B, Decl(genericTypeParameterEquivalence2.ts, 1, 19))
>C : C, Symbol(C, Decl(genericTypeParameterEquivalence2.ts, 1, 22))
>g : (a: A) => B, Symbol(g, Decl(genericTypeParameterEquivalence2.ts, 1, 41))
>a : A, Symbol(a, Decl(genericTypeParameterEquivalence2.ts, 1, 46))
>A : A, Symbol(A, Decl(genericTypeParameterEquivalence2.ts, 1, 17))
>B : B, Symbol(B, Decl(genericTypeParameterEquivalence2.ts, 1, 19))
>a : A, Symbol(a, Decl(genericTypeParameterEquivalence2.ts, 1, 59))
>A : A, Symbol(A, Decl(genericTypeParameterEquivalence2.ts, 1, 17))
>C : C, Symbol(C, Decl(genericTypeParameterEquivalence2.ts, 1, 22))

    return function (a:A) : C {
>function (a:A) : C {        return f(g.apply(null, a));    } : (a: A) => C
>a : A, Symbol(a, Decl(genericTypeParameterEquivalence2.ts, 2, 21))
>A : A, Symbol(A, Decl(genericTypeParameterEquivalence2.ts, 1, 17))
>C : C, Symbol(C, Decl(genericTypeParameterEquivalence2.ts, 1, 22))

        return f(g.apply(null, a));
>f(g.apply(null, a)) : C
>f : (b: B) => C, Symbol(f, Decl(genericTypeParameterEquivalence2.ts, 1, 26))
>g.apply(null, a) : any
>g.apply : (thisArg: any, argArray?: any) => any, Symbol(Function.apply, Decl(lib.d.ts, 228, 20))
>g : (a: A) => B, Symbol(g, Decl(genericTypeParameterEquivalence2.ts, 1, 41))
>apply : (thisArg: any, argArray?: any) => any, Symbol(Function.apply, Decl(lib.d.ts, 228, 20))
>null : null
>a : A, Symbol(a, Decl(genericTypeParameterEquivalence2.ts, 2, 21))

    };
}

// forEach :: [a] -> (a -> ()) -> ()
function forEach<A>(list: A[], f: (a: A, n?: number) => void ): void {
>forEach : <A>(list: A[], f: (a: A, n?: number) => void) => void, Symbol(forEach, Decl(genericTypeParameterEquivalence2.ts, 5, 1))
>A : A, Symbol(A, Decl(genericTypeParameterEquivalence2.ts, 8, 17))
>list : A[], Symbol(list, Decl(genericTypeParameterEquivalence2.ts, 8, 20))
>A : A, Symbol(A, Decl(genericTypeParameterEquivalence2.ts, 8, 17))
>f : (a: A, n?: number) => void, Symbol(f, Decl(genericTypeParameterEquivalence2.ts, 8, 30))
>a : A, Symbol(a, Decl(genericTypeParameterEquivalence2.ts, 8, 35))
>A : A, Symbol(A, Decl(genericTypeParameterEquivalence2.ts, 8, 17))
>n : number, Symbol(n, Decl(genericTypeParameterEquivalence2.ts, 8, 40))

    for (var i = 0; i < list.length; ++i) {
>i : number, Symbol(i, Decl(genericTypeParameterEquivalence2.ts, 9, 12))
>0 : number
>i < list.length : boolean
>i : number, Symbol(i, Decl(genericTypeParameterEquivalence2.ts, 9, 12))
>list.length : number, Symbol(Array.length, Decl(lib.d.ts, 1007, 20))
>list : A[], Symbol(list, Decl(genericTypeParameterEquivalence2.ts, 8, 20))
>length : number, Symbol(Array.length, Decl(lib.d.ts, 1007, 20))
>++i : number
>i : number, Symbol(i, Decl(genericTypeParameterEquivalence2.ts, 9, 12))

        f(list[i], i);
>f(list[i], i) : void
>f : (a: A, n?: number) => void, Symbol(f, Decl(genericTypeParameterEquivalence2.ts, 8, 30))
>list[i] : A
>list : A[], Symbol(list, Decl(genericTypeParameterEquivalence2.ts, 8, 20))
>i : number, Symbol(i, Decl(genericTypeParameterEquivalence2.ts, 9, 12))
>i : number, Symbol(i, Decl(genericTypeParameterEquivalence2.ts, 9, 12))
    }
}

// filter :: (a->bool) -> [a] -> [a]
function filter<A>(f: (a: A) => boolean, ar: A[]): A[] {
>filter : <A>(f: (a: A) => boolean, ar: A[]) => A[], Symbol(filter, Decl(genericTypeParameterEquivalence2.ts, 12, 1))
>A : A, Symbol(A, Decl(genericTypeParameterEquivalence2.ts, 15, 16))
>f : (a: A) => boolean, Symbol(f, Decl(genericTypeParameterEquivalence2.ts, 15, 19))
>a : A, Symbol(a, Decl(genericTypeParameterEquivalence2.ts, 15, 23))
>A : A, Symbol(A, Decl(genericTypeParameterEquivalence2.ts, 15, 16))
>ar : A[], Symbol(ar, Decl(genericTypeParameterEquivalence2.ts, 15, 40))
>A : A, Symbol(A, Decl(genericTypeParameterEquivalence2.ts, 15, 16))
>A : A, Symbol(A, Decl(genericTypeParameterEquivalence2.ts, 15, 16))

    var ret = [];
>ret : any[], Symbol(ret, Decl(genericTypeParameterEquivalence2.ts, 16, 7))
>[] : undefined[]

    forEach(ar, (el) => {
>forEach(ar, (el) => {        if (f(el)) {            ret.push(el);        }    } ) : void
>forEach : <A>(list: A[], f: (a: A, n?: number) => void) => void, Symbol(forEach, Decl(genericTypeParameterEquivalence2.ts, 5, 1))
>ar : A[], Symbol(ar, Decl(genericTypeParameterEquivalence2.ts, 15, 40))
>(el) => {        if (f(el)) {            ret.push(el);        }    } : (el: A) => void
>el : A, Symbol(el, Decl(genericTypeParameterEquivalence2.ts, 17, 17))

        if (f(el)) {
>f(el) : boolean
>f : (a: A) => boolean, Symbol(f, Decl(genericTypeParameterEquivalence2.ts, 15, 19))
>el : A, Symbol(el, Decl(genericTypeParameterEquivalence2.ts, 17, 17))

            ret.push(el);
>ret.push(el) : number
>ret.push : (...items: any[]) => number, Symbol(Array.push, Decl(lib.d.ts, 1016, 29))
>ret : any[], Symbol(ret, Decl(genericTypeParameterEquivalence2.ts, 16, 7))
>push : (...items: any[]) => number, Symbol(Array.push, Decl(lib.d.ts, 1016, 29))
>el : A, Symbol(el, Decl(genericTypeParameterEquivalence2.ts, 17, 17))
        }
    } );

    return ret;
>ret : any[], Symbol(ret, Decl(genericTypeParameterEquivalence2.ts, 16, 7))
}

// length :: [a] -> Num
function length2<A>(ar: A[]): number {
>length2 : <A>(ar: A[]) => number, Symbol(length2, Decl(genericTypeParameterEquivalence2.ts, 24, 1))
>A : A, Symbol(A, Decl(genericTypeParameterEquivalence2.ts, 27, 17))
>ar : A[], Symbol(ar, Decl(genericTypeParameterEquivalence2.ts, 27, 20))
>A : A, Symbol(A, Decl(genericTypeParameterEquivalence2.ts, 27, 17))

    return ar.length;
>ar.length : number, Symbol(Array.length, Decl(lib.d.ts, 1007, 20))
>ar : A[], Symbol(ar, Decl(genericTypeParameterEquivalence2.ts, 27, 20))
>length : number, Symbol(Array.length, Decl(lib.d.ts, 1007, 20))
}

// curry1 :: ((a,b)->c) -> (a->(b->c))
function curry1<A, B, C>(f: (a: A, b: B) => C): (ax: A) => (bx: B) => C {
>curry1 : <A, B, C>(f: (a: A, b: B) => C) => (ax: A) => (bx: B) => C, Symbol(curry1, Decl(genericTypeParameterEquivalence2.ts, 29, 1))
>A : A, Symbol(A, Decl(genericTypeParameterEquivalence2.ts, 32, 16))
>B : B, Symbol(B, Decl(genericTypeParameterEquivalence2.ts, 32, 18))
>C : C, Symbol(C, Decl(genericTypeParameterEquivalence2.ts, 32, 21))
>f : (a: A, b: B) => C, Symbol(f, Decl(genericTypeParameterEquivalence2.ts, 32, 25))
>a : A, Symbol(a, Decl(genericTypeParameterEquivalence2.ts, 32, 29))
>A : A, Symbol(A, Decl(genericTypeParameterEquivalence2.ts, 32, 16))
>b : B, Symbol(b, Decl(genericTypeParameterEquivalence2.ts, 32, 34))
>B : B, Symbol(B, Decl(genericTypeParameterEquivalence2.ts, 32, 18))
>C : C, Symbol(C, Decl(genericTypeParameterEquivalence2.ts, 32, 21))
>ax : A, Symbol(ax, Decl(genericTypeParameterEquivalence2.ts, 32, 49))
>A : A, Symbol(A, Decl(genericTypeParameterEquivalence2.ts, 32, 16))
>bx : B, Symbol(bx, Decl(genericTypeParameterEquivalence2.ts, 32, 60))
>B : B, Symbol(B, Decl(genericTypeParameterEquivalence2.ts, 32, 18))
>C : C, Symbol(C, Decl(genericTypeParameterEquivalence2.ts, 32, 21))

    return function (ay: A) {
>function (ay: A) {        return function (by: B) {            return f(ay, by);        };    } : (ay: A) => (by: B) => C
>ay : A, Symbol(ay, Decl(genericTypeParameterEquivalence2.ts, 33, 21))
>A : A, Symbol(A, Decl(genericTypeParameterEquivalence2.ts, 32, 16))

        return function (by: B) {
>function (by: B) {            return f(ay, by);        } : (by: B) => C
>by : B, Symbol(by, Decl(genericTypeParameterEquivalence2.ts, 34, 25))
>B : B, Symbol(B, Decl(genericTypeParameterEquivalence2.ts, 32, 18))

            return f(ay, by);
>f(ay, by) : C
>f : (a: A, b: B) => C, Symbol(f, Decl(genericTypeParameterEquivalence2.ts, 32, 25))
>ay : A, Symbol(ay, Decl(genericTypeParameterEquivalence2.ts, 33, 21))
>by : B, Symbol(by, Decl(genericTypeParameterEquivalence2.ts, 34, 25))

        };
    };
}

var cfilter = curry1(filter);
>cfilter : (ax: {}) => (bx: {}) => {}[], Symbol(cfilter, Decl(genericTypeParameterEquivalence2.ts, 40, 3))
>curry1(filter) : (ax: {}) => (bx: {}) => {}[]
>curry1 : <A, B, C>(f: (a: A, b: B) => C) => (ax: A) => (bx: B) => C, Symbol(curry1, Decl(genericTypeParameterEquivalence2.ts, 29, 1))
>filter : <A>(f: (a: A) => boolean, ar: A[]) => A[], Symbol(filter, Decl(genericTypeParameterEquivalence2.ts, 12, 1))

// compose :: (b->c) -> (a->b) -> (a->c)
// length :: [a] -> Num
// cfilter :: {} -> {} -> [{}]
// pred :: a -> Bool 
// cfilter(pred) :: {} -> [{}]
// length2 :: [a] -> Num
// countWhere :: (a -> Bool) -> [a] -> Num

function countWhere_1<A>(pred: (a: A) => boolean): (a: A[]) => number {
>countWhere_1 : <A>(pred: (a: A) => boolean) => (a: A[]) => number, Symbol(countWhere_1, Decl(genericTypeParameterEquivalence2.ts, 40, 29))
>A : A, Symbol(A, Decl(genericTypeParameterEquivalence2.ts, 50, 22))
>pred : (a: A) => boolean, Symbol(pred, Decl(genericTypeParameterEquivalence2.ts, 50, 25))
>a : A, Symbol(a, Decl(genericTypeParameterEquivalence2.ts, 50, 32))
>A : A, Symbol(A, Decl(genericTypeParameterEquivalence2.ts, 50, 22))
>a : A[], Symbol(a, Decl(genericTypeParameterEquivalence2.ts, 50, 52))
>A : A, Symbol(A, Decl(genericTypeParameterEquivalence2.ts, 50, 22))

    return compose(length2, cfilter(pred));
>compose(length2, cfilter(pred)) : (a: {}) => number
>compose : <A, B, C>(f: (b: B) => C, g: (a: A) => B) => (a: A) => C, Symbol(compose, Decl(genericTypeParameterEquivalence2.ts, 0, 0))
>length2 : <A>(ar: A[]) => number, Symbol(length2, Decl(genericTypeParameterEquivalence2.ts, 24, 1))
>cfilter(pred) : (bx: {}) => {}[]
>cfilter : (ax: {}) => (bx: {}) => {}[], Symbol(cfilter, Decl(genericTypeParameterEquivalence2.ts, 40, 3))
>pred : (a: A) => boolean, Symbol(pred, Decl(genericTypeParameterEquivalence2.ts, 50, 25))
}

function countWhere_2<A>(pred: (a: A) => boolean): (a: A[]) => number {
>countWhere_2 : <A>(pred: (a: A) => boolean) => (a: A[]) => number, Symbol(countWhere_2, Decl(genericTypeParameterEquivalence2.ts, 52, 1))
>A : A, Symbol(A, Decl(genericTypeParameterEquivalence2.ts, 54, 22))
>pred : (a: A) => boolean, Symbol(pred, Decl(genericTypeParameterEquivalence2.ts, 54, 25))
>a : A, Symbol(a, Decl(genericTypeParameterEquivalence2.ts, 54, 32))
>A : A, Symbol(A, Decl(genericTypeParameterEquivalence2.ts, 54, 22))
>a : A[], Symbol(a, Decl(genericTypeParameterEquivalence2.ts, 54, 52))
>A : A, Symbol(A, Decl(genericTypeParameterEquivalence2.ts, 54, 22))

    var where = cfilter(pred);
>where : (bx: {}) => {}[], Symbol(where, Decl(genericTypeParameterEquivalence2.ts, 55, 7))
>cfilter(pred) : (bx: {}) => {}[]
>cfilter : (ax: {}) => (bx: {}) => {}[], Symbol(cfilter, Decl(genericTypeParameterEquivalence2.ts, 40, 3))
>pred : (a: A) => boolean, Symbol(pred, Decl(genericTypeParameterEquivalence2.ts, 54, 25))

    return compose(length2, where);
>compose(length2, where) : (a: {}) => number
>compose : <A, B, C>(f: (b: B) => C, g: (a: A) => B) => (a: A) => C, Symbol(compose, Decl(genericTypeParameterEquivalence2.ts, 0, 0))
>length2 : <A>(ar: A[]) => number, Symbol(length2, Decl(genericTypeParameterEquivalence2.ts, 24, 1))
>where : (bx: {}) => {}[], Symbol(where, Decl(genericTypeParameterEquivalence2.ts, 55, 7))
}