115 lines
1.6 KiB
JavaScript
115 lines
1.6 KiB
JavaScript
//// [callSignaturesWithParameterInitializers.ts]
|
|
// Optional parameters allow initializers only in implementation signatures
|
|
|
|
function foo(x = 1) { }
|
|
var f = function foo(x = 1) { }
|
|
var f2 = (x: number, y = 1) => { }
|
|
|
|
foo(1);
|
|
foo();
|
|
f(1);
|
|
f();
|
|
f2(1);
|
|
f2(1, 2);
|
|
|
|
class C {
|
|
foo(x = 1) { }
|
|
}
|
|
|
|
var c: C;
|
|
c.foo();
|
|
c.foo(1);
|
|
|
|
// these are errors
|
|
interface I {
|
|
(x = 1);
|
|
foo(x: number, y = 1);
|
|
}
|
|
|
|
var i: I;
|
|
i();
|
|
i(1);
|
|
i.foo(1);
|
|
i.foo(1, 2);
|
|
|
|
// these are errors
|
|
var a: {
|
|
(x = 1);
|
|
foo(x = 1);
|
|
}
|
|
|
|
a();
|
|
a(1);
|
|
a.foo();
|
|
a.foo(1);
|
|
|
|
var b = {
|
|
foo(x = 1) { },
|
|
a: function foo(x: number, y = 1) { },
|
|
b: (x = 1) => { }
|
|
}
|
|
|
|
b.foo();
|
|
b.foo(1);
|
|
b.a(1);
|
|
b.a(1, 2);
|
|
b.b();
|
|
b.b(1);
|
|
|
|
|
|
//// [callSignaturesWithParameterInitializers.js]
|
|
// Optional parameters allow initializers only in implementation signatures
|
|
function foo(x) {
|
|
if (x === void 0) { x = 1; }
|
|
}
|
|
var f = function foo(x) {
|
|
if (x === void 0) { x = 1; }
|
|
};
|
|
var f2 = function (x, y) {
|
|
if (y === void 0) { y = 1; }
|
|
};
|
|
foo(1);
|
|
foo();
|
|
f(1);
|
|
f();
|
|
f2(1);
|
|
f2(1, 2);
|
|
var C = (function () {
|
|
function C() {
|
|
}
|
|
C.prototype.foo = function (x) {
|
|
if (x === void 0) { x = 1; }
|
|
};
|
|
return C;
|
|
})();
|
|
var c;
|
|
c.foo();
|
|
c.foo(1);
|
|
var i;
|
|
i();
|
|
i(1);
|
|
i.foo(1);
|
|
i.foo(1, 2);
|
|
// these are errors
|
|
var a;
|
|
a();
|
|
a(1);
|
|
a.foo();
|
|
a.foo(1);
|
|
var b = {
|
|
foo: function (x) {
|
|
if (x === void 0) { x = 1; }
|
|
},
|
|
a: function foo(x, y) {
|
|
if (y === void 0) { y = 1; }
|
|
},
|
|
b: function (x) {
|
|
if (x === void 0) { x = 1; }
|
|
}
|
|
};
|
|
b.foo();
|
|
b.foo(1);
|
|
b.a(1);
|
|
b.a(1, 2);
|
|
b.b();
|
|
b.b(1);
|