arrayLiterals.js

//// [arrayLiterals.ts]
// Empty array literal with no contextual type has type Undefined[]

var arr1= [[], [1], ['']];

var arr2 = [[null], [1], ['']];


// Array literal with elements of only EveryType E has type E[]
var stringArrArr = [[''], [""]];

var stringArr = ['', ""];

var numberArr = [0, 0.0, 0x00, 1e1];

var boolArr = [false, true, false, true];

class C { private p; }
var classArr = [new C(), new C()];

var classTypeArray = [C, C, C];
var classTypeArray: Array<typeof C>; // Should OK, not be a parse error

// Contextual type C with numeric index signature makes array literal of EveryType E of type BCT(E,C)[]
var context1: { [n: number]: { a: string; b: number; }; } = [{ a: '', b: 0, c: '' }, { a: "", b: 3, c: 0 }];
var context2 = [{ a: '', b: 0, c: '' }, { a: "", b: 3, c: 0 }];

// Contextual type C with numeric index signature of type Base makes array literal of Derived have type Base[]
class Base { private p; }
class Derived1 extends Base { private m };
class Derived2 extends Base { private n };
var context3: Base[] = [new Derived1(), new Derived2()];

// Contextual type C with numeric index signature of type Base makes array literal of Derived1 and Derived2 have type Base[]
var context4: Base[] = [new Derived1(), new Derived1()];



//// [arrayLiterals.js]
// Empty array literal with no contextual type has type Undefined[]
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) {
        extendStatics(d, b);
        function __() { this.constructor = d; }
        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
    };
})();
var arr1 = [[], [1], ['']];
var arr2 = [[null], [1], ['']];
// Array literal with elements of only EveryType E has type E[]
var stringArrArr = [[''], [""]];
var stringArr = ['', ""];
var numberArr = [0, 0.0, 0x00, 1e1];
var boolArr = [false, true, false, true];
var C = /** @class */ (function () {
    function C() {
    }
    return C;
}());
var classArr = [new C(), new C()];
var classTypeArray = [C, C, C];
var classTypeArray; // Should OK, not be a parse error
// Contextual type C with numeric index signature makes array literal of EveryType E of type BCT(E,C)[]
var context1 = [{ a: '', b: 0, c: '' }, { a: "", b: 3, c: 0 }];
var context2 = [{ a: '', b: 0, c: '' }, { a: "", b: 3, c: 0 }];
// Contextual type C with numeric index signature of type Base makes array literal of Derived have type Base[]
var Base = /** @class */ (function () {
    function Base() {
    }
    return Base;
}());
var Derived1 = /** @class */ (function (_super) {
    __extends(Derived1, _super);
    function Derived1() {
        return _super !== null && _super.apply(this, arguments) || this;
    }
    return Derived1;
}(Base));
;
var Derived2 = /** @class */ (function (_super) {
    __extends(Derived2, _super);
    function Derived2() {
        return _super !== null && _super.apply(this, arguments) || this;
    }
    return Derived2;
}(Base));
;
var context3 = [new Derived1(), new Derived2()];
// Contextual type C with numeric index signature of type Base makes array literal of Derived1 and Derived2 have type Base[]
var context4 = [new Derived1(), new Derived1()];