TypeScript/tests/baselines/reference/genericCallWithGenericSignatureArguments2.js

//// [genericCallWithGenericSignatureArguments2.ts]
// When a function expression is inferentially typed (section 4.9.3) and a type assigned to a parameter in that expression references type parameters for which inferences are being made, 
// the corresponding inferred type arguments to become fixed and no further candidate inferences are made for them.

module onlyT {
    function foo<T>(a: (x: T) => T, b: (x: T) => T) {
        var r: (x: T) => T;
        return r;
    }

    var r1: (x: {}) => {} = foo((x: number) => 1, (x: string) => '');

    function other2<T extends Date>(x: T) {
        var r7 = foo((a: T) => a, (b: T) => b); // T => T
        // BUG 835518
        var r9 = r7(new Date()); // should be ok
        var r10 = r7(1); // error
    }

    function foo2<T extends Date>(a: (x: T) => T, b: (x: T) => T) {
        var r: (x: T) => T;
        return r;
    }

    function other3<T extends RegExp>(x: T) {
        var r7 = foo2((a: T) => a, (b: T) => b); // error
        var r7b = foo2((a) => a, (b) => b); // valid, T is inferred to be Date
    }

    enum E { A }
    enum F { A }

    function foo3<T>(x: T, a: (x: T) => T, b: (x: T) => T) {
        var r: (x: T) => T;
        return r;
    }

    var r7 = foo3(E.A, (x) => E.A, (x) => F.A); // error
}

module TU {
    function foo<T, U>(a: (x: T) => T, b: (x: U) => U) {
        var r: (x: T) => T;
        return r;
    }

    var r1: (x: {}) => {} = foo((x: number) => 1, (x: string) => '');

    function other2<T extends Date>(x: T) {
        var r7 = foo((a: T) => a, (b: T) => b); 
        var r9 = r7(new Date()); 
        var r10 = r7(1); 
    }

    function foo2<T extends Date, U extends Date>(a: (x: T) => T, b: (x: U) => U) {
        var r: (x: T) => T;
        return r;
    }

    function other3<T extends RegExp>(x: T) {
        var r7 = foo2((a: T) => a, (b: T) => b); 
        var r7b = foo2((a) => a, (b) => b); 
    }

    enum E { A }
    enum F { A }

    function foo3<T>(x: T, a: (x: T) => T, b: (x: U) => U) {
        var r: (x: T) => T;
        return r;
    }

    var r7 = foo3(E.A, (x) => E.A, (x) => F.A);
}

//// [genericCallWithGenericSignatureArguments2.js]
// When a function expression is inferentially typed (section 4.9.3) and a type assigned to a parameter in that expression references type parameters for which inferences are being made, 
// the corresponding inferred type arguments to become fixed and no further candidate inferences are made for them.
var onlyT;
(function (onlyT) {
    function foo(a, b) {
        var r;
        return r;
    }
    var r1 = foo(function (x) { return 1; }, function (x) { return ''; });
    function other2(x) {
        var r7 = foo(function (a) { return a; }, function (b) { return b; }); // T => T
        // BUG 835518
        var r9 = r7(new Date()); // should be ok
        var r10 = r7(1); // error
    }
    function foo2(a, b) {
        var r;
        return r;
    }
    function other3(x) {
        var r7 = foo2(function (a) { return a; }, function (b) { return b; }); // error
        var r7b = foo2(function (a) { return a; }, function (b) { return b; }); // valid, T is inferred to be Date
    }
    var E;
    (function (E) {
        E[E["A"] = 0] = "A";
    })(E || (E = {}));
    var F;
    (function (F) {
        F[F["A"] = 0] = "A";
    })(F || (F = {}));
    function foo3(x, a, b) {
        var r;
        return r;
    }
    var r7 = foo3(E.A, function (x) { return E.A; }, function (x) { return F.A; }); // error
})(onlyT || (onlyT = {}));
var TU;
(function (TU) {
    function foo(a, b) {
        var r;
        return r;
    }
    var r1 = foo(function (x) { return 1; }, function (x) { return ''; });
    function other2(x) {
        var r7 = foo(function (a) { return a; }, function (b) { return b; });
        var r9 = r7(new Date());
        var r10 = r7(1);
    }
    function foo2(a, b) {
        var r;
        return r;
    }
    function other3(x) {
        var r7 = foo2(function (a) { return a; }, function (b) { return b; });
        var r7b = foo2(function (a) { return a; }, function (b) { return b; });
    }
    var E;
    (function (E) {
        E[E["A"] = 0] = "A";
    })(E || (E = {}));
    var F;
    (function (F) {
        F[F["A"] = 0] = "A";
    })(F || (F = {}));
    function foo3(x, a, b) {
        var r;
        return r;
    }
    var r7 = foo3(E.A, function (x) { return E.A; }, function (x) { return F.A; });
})(TU || (TU = {}));