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
|
abstract class AbstractClass {
constructor(str: string, other: AbstractClass) {
this.method(parseInt(str));
let val = this.prop.toLowerCase();
if (!str) {
this.prop = "Hello World";
}
this.cb(str);
// OK, reference is inside function
const innerFunction = () => {
return this.prop;
}
// OK, references are to another instance
other.cb(other.prop);
}
abstract prop: string;
abstract cb: (s: string) => void;
abstract method(num: number): void;
other = this.prop;
fn = () => this.prop;
method2() {
this.prop = this.prop + "!";
}
}
abstract class DerivedAbstractClass extends AbstractClass {
cb = (s: string) => {};
constructor(str: string, other: AbstractClass, yetAnother: DerivedAbstractClass) {
super(str, other);
// there is no implementation of 'prop' in any base class
this.cb(this.prop.toLowerCase());
this.method(1);
// OK, references are to another instance
other.cb(other.prop);
yetAnother.cb(yetAnother.prop);
}
}
class Implementation extends DerivedAbstractClass {
prop = "";
cb = (s: string) => {};
constructor(str: string, other: AbstractClass, yetAnother: DerivedAbstractClass) {
super(str, other, yetAnother);
this.cb(this.prop);
}
method(n: number) {
this.cb(this.prop + n);
}
}
class User {
constructor(a: AbstractClass) {
a.prop;
a.cb("hi");
a.method(12);
a.method2();
}
}
abstract class C1 {
abstract x: string;
abstract y: string;
constructor() {
let self = this; // ok
let { x, y: y1 } = this; // error
({ x, y: y1, "y": y1 } = this); // error
}
}
class C2 {
x: string;
y: string;
constructor() {
let self = this; // ok
let { x, y: y1 } = this; // ok
({ x, y: y1, "y": y1 } = this); // ok
}
}
|
