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
|
tests/cases/compiler/abstractPropertyNegative.ts(10,18): error TS2380: The return type of a 'get' accessor must be assignable to its 'set' accessor type
tests/cases/compiler/abstractPropertyNegative.ts(13,7): error TS2515: Non-abstract class 'C' does not implement inherited abstract member 'm' from class 'B'.
tests/cases/compiler/abstractPropertyNegative.ts(13,7): error TS2515: Non-abstract class 'C' does not implement inherited abstract member 'mismatch' from class 'B'.
tests/cases/compiler/abstractPropertyNegative.ts(13,7): error TS2515: Non-abstract class 'C' does not implement inherited abstract member 'prop' from class 'B'.
tests/cases/compiler/abstractPropertyNegative.ts(13,7): error TS2515: Non-abstract class 'C' does not implement inherited abstract member 'readonlyProp' from class 'B'.
tests/cases/compiler/abstractPropertyNegative.ts(15,5): error TS1244: Abstract methods can only appear within an abstract class.
tests/cases/compiler/abstractPropertyNegative.ts(16,37): error TS1005: '{' expected.
tests/cases/compiler/abstractPropertyNegative.ts(19,3): error TS2540: Cannot assign to 'ro' because it is a read-only property.
tests/cases/compiler/abstractPropertyNegative.ts(25,5): error TS2416: Property 'num' in type 'WrongTypePropertyImpl' is not assignable to the same property in base type 'WrongTypeProperty'.
Type 'string' is not assignable to type 'number'.
tests/cases/compiler/abstractPropertyNegative.ts(31,9): error TS2416: Property 'num' in type 'WrongTypeAccessorImpl' is not assignable to the same property in base type 'WrongTypeAccessor'.
Type 'string' is not assignable to type 'number'.
tests/cases/compiler/abstractPropertyNegative.ts(34,5): error TS2416: Property 'num' in type 'WrongTypeAccessorImpl2' is not assignable to the same property in base type 'WrongTypeAccessor'.
Type 'string' is not assignable to type 'number'.
tests/cases/compiler/abstractPropertyNegative.ts(38,18): error TS2676: Accessors must both be abstract or non-abstract.
tests/cases/compiler/abstractPropertyNegative.ts(39,9): error TS2676: Accessors must both be abstract or non-abstract.
tests/cases/compiler/abstractPropertyNegative.ts(40,9): error TS2676: Accessors must both be abstract or non-abstract.
tests/cases/compiler/abstractPropertyNegative.ts(41,18): error TS2676: Accessors must both be abstract or non-abstract.
==== tests/cases/compiler/abstractPropertyNegative.ts (15 errors) ====
interface A {
prop: string;
m(): string;
}
abstract class B implements A {
abstract prop: string;
public abstract readonly ro: string;
abstract get readonlyProp(): string;
abstract m(): string;
abstract get mismatch(): string;
~~~~~~~~
!!! error TS2380: The return type of a 'get' accessor must be assignable to its 'set' accessor type
abstract set mismatch(val: number); // error, not same type
}
class C extends B {
~
!!! error TS2515: Non-abstract class 'C' does not implement inherited abstract member 'm' from class 'B'.
~
!!! error TS2515: Non-abstract class 'C' does not implement inherited abstract member 'mismatch' from class 'B'.
~
!!! error TS2515: Non-abstract class 'C' does not implement inherited abstract member 'prop' from class 'B'.
~
!!! error TS2515: Non-abstract class 'C' does not implement inherited abstract member 'readonlyProp' from class 'B'.
readonly ro = "readonly please";
abstract notAllowed: string;
~~~~~~~~
!!! error TS1244: Abstract methods can only appear within an abstract class.
get concreteWithNoBody(): string;
~
!!! error TS1005: '{' expected.
}
let c = new C();
c.ro = "error: lhs of assignment can't be readonly";
~~
!!! error TS2540: Cannot assign to 'ro' because it is a read-only property.
abstract class WrongTypeProperty {
abstract num: number;
}
class WrongTypePropertyImpl extends WrongTypeProperty {
num = "nope, wrong";
~~~
!!! error TS2416: Property 'num' in type 'WrongTypePropertyImpl' is not assignable to the same property in base type 'WrongTypeProperty'.
!!! error TS2416: Type 'string' is not assignable to type 'number'.
}
abstract class WrongTypeAccessor {
abstract get num(): number;
}
class WrongTypeAccessorImpl extends WrongTypeAccessor {
get num() { return "nope, wrong"; }
~~~
!!! error TS2416: Property 'num' in type 'WrongTypeAccessorImpl' is not assignable to the same property in base type 'WrongTypeAccessor'.
!!! error TS2416: Type 'string' is not assignable to type 'number'.
}
class WrongTypeAccessorImpl2 extends WrongTypeAccessor {
num = "nope, wrong";
~~~
!!! error TS2416: Property 'num' in type 'WrongTypeAccessorImpl2' is not assignable to the same property in base type 'WrongTypeAccessor'.
!!! error TS2416: Type 'string' is not assignable to type 'number'.
}
abstract class AbstractAccessorMismatch {
abstract get p1(): string;
~~
!!! error TS2676: Accessors must both be abstract or non-abstract.
set p1(val: string) { };
~~
!!! error TS2676: Accessors must both be abstract or non-abstract.
get p2(): string { return "should work"; }
~~
!!! error TS2676: Accessors must both be abstract or non-abstract.
abstract set p2(val: string);
~~
!!! error TS2676: Accessors must both be abstract or non-abstract.
}
|
