74 lines
2.4 KiB
JavaScript
74 lines
2.4 KiB
JavaScript
//// [genericCallWithGenericSignatureArguments2.ts]
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// 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,
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// the corresponding inferred type arguments to become fixed and no further candidate inferences are made for them.
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function foo<T>(a: (x: T) => T, b: (x: T) => T) {
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var r: (x: T) => T;
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return r;
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}
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var r1: (x: {}) => {} = foo((x: number) => 1, (x: string) => '');
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function other2<T extends Date>(x: T) {
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var r7 = foo((a: T) => a, (b: T) => b); // T => T
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// BUG 835518
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var r9 = r7(new Date()); // should be ok
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var r10 = r7(1); // error
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}
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function foo2<T extends Date>(a: (x: T) => T, b: (x: T) => T) {
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var r: (x: T) => T;
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return r;
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}
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function other3<T extends RegExp>(x: T) {
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var r7 = foo2((a: T) => a, (b: T) => b); // error
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var r7b = foo2((a) => a, (b) => b); // valid, T is inferred to be Date
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}
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enum E { A }
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enum F { A }
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function foo3<T>(x: T, a: (x: T) => T, b: (x: T) => T) {
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var r: (x: T) => T;
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return r;
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}
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var r7 = foo3(E.A, (x) => E.A, (x) => F.A); // error
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//// [genericCallWithGenericSignatureArguments2.js]
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// 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,
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// the corresponding inferred type arguments to become fixed and no further candidate inferences are made for them.
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function foo(a, b) {
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var r;
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return r;
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}
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var r1 = foo(function (x) { return 1; }, function (x) { return ''; });
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function other2(x) {
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var r7 = foo(function (a) { return a; }, function (b) { return b; }); // T => T
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// BUG 835518
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var r9 = r7(new Date()); // should be ok
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var r10 = r7(1); // error
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}
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function foo2(a, b) {
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var r;
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return r;
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}
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function other3(x) {
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var r7 = foo2(function (a) { return a; }, function (b) { return b; }); // error
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var r7b = foo2(function (a) { return a; }, function (b) { return b; }); // valid, T is inferred to be Date
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}
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var E;
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(function (E) {
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E[E["A"] = 0] = "A";
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})(E || (E = {}));
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var F;
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(function (F) {
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F[F["A"] = 0] = "A";
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})(F || (F = {}));
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function foo3(x, a, b) {
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var r;
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return r;
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}
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var r7 = foo3(0 /* A */, function (x) { return 0 /* A */; }, function (x) { return 0 /* A */; }); // error
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