105 lines
4.1 KiB
TypeScript
105 lines
4.1 KiB
TypeScript
//// [constructSignatureAssignabilityInInheritance4.ts]
|
|
// checking subtype relations for function types as it relates to contextual signature instantiation
|
|
|
|
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 <T>(x: T) => T[];
|
|
a2: new <T>(x: T) => string[];
|
|
a3: new <T>(x: T) => void;
|
|
a4: new <T, U>(x: T, y: U) => string;
|
|
a5: new <T, U>(x: (arg: T) => U) => T;
|
|
a6: new <T extends Base>(x: (arg: T) => Derived) => T;
|
|
a11: new <T>(x: { foo: T }, y: { foo: T; bar: T }) => Base;
|
|
a15: new <T>(x: { a: T; b: T }) => T[];
|
|
a16: new <T extends Base>(x: { a: T; b: T }) => T[];
|
|
a17: {
|
|
new <T extends Base>(x: T): T[];
|
|
new <U extends Derived>(x: U): U[];
|
|
};
|
|
a18: {
|
|
new <T extends Derived>(x: T): number[];
|
|
new <U extends Base>(x: U): number[];
|
|
};
|
|
a19: {
|
|
new <T extends Derived>(x: new (a: T) => T): T[];
|
|
new <U extends Base>(x: new (a: U) => U): U[];
|
|
};
|
|
a20: {
|
|
new (x: {
|
|
new <T extends Derived>(a: T): T;
|
|
new <U extends Base>(a: U): U;
|
|
}): any[];
|
|
new (x: {
|
|
new <T extends Base>(a: T): T;
|
|
new <U extends Derived2>(a: U): U;
|
|
}): any[];
|
|
};
|
|
}
|
|
|
|
// S's
|
|
interface I extends A {
|
|
// N's
|
|
a: new <T>(x: T) => T[]; // ok, instantiation of N is a subtype of M, T is number
|
|
a2: new <T>(x: T) => string[]; // ok
|
|
a3: new <T>(x: T) => T; // ok since Base returns void
|
|
a4: new <T, U>(x: T, y: U) => string; // ok, instantiation of N is a subtype of M, T is string, U is number
|
|
a5: new <T, U>(x: (arg: T) => U) => T; // ok, U is in a parameter position so inferences can be made
|
|
a6: new <T extends Base, U extends Derived>(x: (arg: T) => U) => T; // ok, same as a5 but with object type hierarchy
|
|
a11: new <T, U>(x: { foo: T }, y: { foo: U; bar: U }) => Base; // ok
|
|
a15: new <U, V>(x: { a: U; b: V; }) => U[]; // ok, T = U, T = V
|
|
a16: new <T>(x: { a: T; b: T }) => T[]; // ok, more general parameter type
|
|
a17: new <T extends Base>(x: T) => T[]; // ok, more general parameter type
|
|
a18: new <T extends Base>(x: T) => number[]; // ok, more general parameter type
|
|
a19: new <T extends Base>(x: new (a: T) => T) => T[]; // ok
|
|
a20: new (x: new <T extends Base>(a: T) => T) => any[]; // ok
|
|
}
|
|
|
|
//// [constructSignatureAssignabilityInInheritance4.js]
|
|
// checking subtype relations for function types as it relates to contextual signature instantiation
|
|
var __extends = (this && this.__extends) || (function () {
|
|
var extendStatics = function (d, b) {
|
|
extendStatics = Object.setPrototypeOf ||
|
|
({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
|
|
function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };
|
|
return extendStatics(d, b);
|
|
};
|
|
return function (d, b) {
|
|
if (typeof b !== "function" && b !== null)
|
|
throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
|
|
extendStatics(d, b);
|
|
function __() { this.constructor = d; }
|
|
d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
|
|
};
|
|
})();
|
|
var Base = /** @class */ (function () {
|
|
function Base() {
|
|
}
|
|
return Base;
|
|
}());
|
|
var Derived = /** @class */ (function (_super) {
|
|
__extends(Derived, _super);
|
|
function Derived() {
|
|
return _super !== null && _super.apply(this, arguments) || this;
|
|
}
|
|
return Derived;
|
|
}(Base));
|
|
var Derived2 = /** @class */ (function (_super) {
|
|
__extends(Derived2, _super);
|
|
function Derived2() {
|
|
return _super !== null && _super.apply(this, arguments) || this;
|
|
}
|
|
return Derived2;
|
|
}(Derived));
|
|
var OtherDerived = /** @class */ (function (_super) {
|
|
__extends(OtherDerived, _super);
|
|
function OtherDerived() {
|
|
return _super !== null && _super.apply(this, arguments) || this;
|
|
}
|
|
return OtherDerived;
|
|
}(Base));
|