//// [subtypingWithConstructSignatures5.ts]
// checking subtype relations for function types as it relates to contextual signature instantiation
// same as subtypingWithConstructSignatures2 just with an extra level of indirection in the inheritance chain
class Base { foo: string; }
class Derived extends Base { bar: string; }
class Derived2 extends Derived { baz: string; }
class OtherDerived extends Base { bing: string; }
interface A { // T
// M's
a: new (x: number) => number[];
a2: new (x: number) => string[];
a3: new (x: number) => void;
a4: new (x: string, y: number) => string;
a5: new (x: (arg: string) => number) => string;
a6: new (x: (arg: Base) => Derived) => Base;
a7: new (x: (arg: Base) => Derived) => (r: Base) => Derived;
a8: new (x: (arg: Base) => Derived, y: (arg2: Base) => Derived) => (r: Base) => Derived;
a9: new (x: (arg: Base) => Derived, y: (arg2: Base) => Derived) => (r: Base) => Derived;
a10: new (...x: Derived[]) => Derived;
a11: new (x: { foo: string }, y: { foo: string; bar: string }) => Base;
a12: new (x: Array, y: Array) => Array;
a13: new (x: Array, y: Array) => Array;
a14: new (x: { a: string; b: number }) => Object;
}
interface B extends A {
a: new (x: T) => T[];
}
// S's
interface I extends B {
// N's
a: new (x: T) => T[]; // ok, instantiation of N is a subtype of M, T is number
a2: new (x: T) => string[]; // ok
a3: new (x: T) => T; // ok since Base returns void
a4: new (x: T, y: U) => T; // ok, instantiation of N is a subtype of M, T is string, U is number
a5: new (x: (arg: T) => U) => T; // ok, U is in a parameter position so inferences can be made
a6: new (x: (arg: T) => U) => T; // ok, same as a5 but with object type hierarchy
a7: new (x: (arg: T) => U) => (r: T) => U; // ok
a8: new (x: (arg: T) => U, y: (arg2: T) => U) => (r: T) => U; // ok
a9: new (x: (arg: T) => U, y: (arg2: { foo: string; bing: number }) => U) => (r: T) => U; // ok, same as a8 with compatible object literal
a10: new (...x: T[]) => T; // ok
a11: new (x: T, y: T) => T; // ok
a12: new >(x: Array, y: T) => Array; // ok, less specific parameter type
a13: new >(x: Array, y: T) => T; // ok, T = Array, satisfies constraint, contextual signature instantiation succeeds
a14: new (x: { a: T; b: T }) => T; // ok, best common type yields T = {} but that's satisfactory for this signature
}
//// [subtypingWithConstructSignatures5.js]
// checking subtype relations for function types as it relates to contextual signature instantiation
// same as subtypingWithConstructSignatures2 just with an extra level of indirection in the inheritance chain
var __extends = this.__extends || function (d, b) {
for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p];
function __() { this.constructor = d; }
__.prototype = b.prototype;
d.prototype = new __();
};
var Base = (function () {
function Base() {
}
return Base;
})();
var Derived = (function (_super) {
__extends(Derived, _super);
function Derived() {
_super.apply(this, arguments);
}
return Derived;
})(Base);
var Derived2 = (function (_super) {
__extends(Derived2, _super);
function Derived2() {
_super.apply(this, arguments);
}
return Derived2;
})(Derived);
var OtherDerived = (function (_super) {
__extends(OtherDerived, _super);
function OtherDerived() {
_super.apply(this, arguments);
}
return OtherDerived;
})(Base);