File: assignmentCompatWithNumericIndexer.js

package info (click to toggle)
node-typescript 3.3.3333-1
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 324,548 kB
  • sloc: makefile: 6; sh: 3
file content (99 lines) | stat: -rw-r--r-- 2,407 bytes parent folder | download
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
//// [assignmentCompatWithNumericIndexer.ts]
// Derived type indexer must be subtype of base type indexer

interface Base { foo: string; }
interface Derived extends Base { bar: string; }
interface Derived2 extends Derived { baz: string; }

class A {
    [x: number]: Base;
}

var a: A;
var b: { [x: number]: Derived; }
a = b;
b = a; // error

var b2: { [x: number]: Derived2; }
a = b2;
b2 = a; // error

module Generics {
    class A<T extends Base> {
        [x: number]: T;
    }

    class B extends A<Base> {
        [x: number]: Derived; // ok
    }

    function foo<T extends Base>() {
        var a: A<T>;
        var b: { [x: number]: Derived; }
        a = b; // error
        b = a; // error

        var b2: { [x: number]: Derived2; }
        a = b2; // error
        b2 = a; // error

        var b3: { [x: number]: T; }
        a = b3; // ok
        b3 = a; // ok
    }
}

//// [assignmentCompatWithNumericIndexer.js]
// Derived type indexer must be subtype of base type indexer
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 (b.hasOwnProperty(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 A = /** @class */ (function () {
    function A() {
    }
    return A;
}());
var a;
var b;
a = b;
b = a; // error
var b2;
a = b2;
b2 = a; // error
var Generics;
(function (Generics) {
    var A = /** @class */ (function () {
        function A() {
        }
        return A;
    }());
    var B = /** @class */ (function (_super) {
        __extends(B, _super);
        function B() {
            return _super !== null && _super.apply(this, arguments) || this;
        }
        return B;
    }(A));
    function foo() {
        var a;
        var b;
        a = b; // error
        b = a; // error
        var b2;
        a = b2; // error
        b2 = a; // error
        var b3;
        a = b3; // ok
        b3 = a; // ok
    }
})(Generics || (Generics = {}));