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
|
tests/cases/compiler/reactDefaultPropsInferenceSuccess.tsx(27,36): error TS2322: Type '(value: string) => void' is not assignable to type '"a" | "b" | ((value: string) => boolean) | undefined'.
Type '(value: string) => void' is not assignable to type '(value: string) => boolean'.
Type 'void' is not assignable to type 'boolean'.
tests/cases/compiler/reactDefaultPropsInferenceSuccess.tsx(43,41): error TS2322: Type '(value: string) => void' is not assignable to type '"a" | "b" | ((value: string) => boolean) | undefined'.
Type '(value: string) => void' is not assignable to type '(value: string) => boolean'.
Type 'void' is not assignable to type 'boolean'.
tests/cases/compiler/reactDefaultPropsInferenceSuccess.tsx(64,37): error TS2322: Type '(value: string) => void' is not assignable to type '(value: string) => boolean'.
Type 'void' is not assignable to type 'boolean'.
==== tests/cases/compiler/reactDefaultPropsInferenceSuccess.tsx (3 errors) ====
/// <reference path="/.lib/react16.d.ts" />
import React from 'react';
interface BaseProps {
when?: ((value: string) => boolean) | "a" | "b";
error?: boolean;
}
interface Props extends BaseProps {
}
class FieldFeedback<P extends Props = BaseProps> extends React.Component<P> {
static defaultProps = {
when: () => true
};
render() {
return <div>Hello</div>;
}
}
// OK
const Test1 = () => <FieldFeedback when={value => !!value} />;
// Error: Void not assignable to boolean
const Test2 = () => <FieldFeedback when={value => console.log(value)} />;
~~~~
!!! error TS2322: Type '(value: string) => void' is not assignable to type '"a" | "b" | ((value: string) => boolean) | undefined'.
!!! error TS2322: Type '(value: string) => void' is not assignable to type '(value: string) => boolean'.
!!! error TS2322: Type 'void' is not assignable to type 'boolean'.
!!! related TS6500 tests/cases/compiler/reactDefaultPropsInferenceSuccess.tsx:6:3: The expected type comes from property 'when' which is declared here on type 'IntrinsicAttributes & IntrinsicClassAttributes<FieldFeedback<Props>> & Pick<Readonly<{ children?: ReactNode; }> & Readonly<Props>, "children" | "error"> & Partial<Pick<Readonly<{ children?: ReactNode; }> & Readonly<Props>, "when">> & Partial<Pick<{ when: () => boolean; }, never>>'
class FieldFeedbackBeta<P extends Props = BaseProps> extends React.Component<P> {
static defaultProps: BaseProps = {
when: () => true
};
render() {
return <div>Hello</div>;
}
}
// OK
const Test1a = () => <FieldFeedbackBeta when={value => !!value} error>Hah</FieldFeedbackBeta>;
// Error: Void not assignable to boolean
const Test2a = () => <FieldFeedbackBeta when={value => console.log(value)} error>Hah</FieldFeedbackBeta>;
~~~~
!!! error TS2322: Type '(value: string) => void' is not assignable to type '"a" | "b" | ((value: string) => boolean) | undefined'.
!!! error TS2322: Type '(value: string) => void' is not assignable to type '(value: string) => boolean'.
!!! error TS2322: Type 'void' is not assignable to type 'boolean'.
!!! related TS6500 tests/cases/compiler/reactDefaultPropsInferenceSuccess.tsx:6:3: The expected type comes from property 'when' which is declared here on type 'IntrinsicAttributes & IntrinsicClassAttributes<FieldFeedbackBeta<Props>> & Pick<Readonly<{ children?: ReactNode; }> & Readonly<Props>, "children"> & Partial<Pick<Readonly<{ children?: ReactNode; }> & Readonly<Props>, "when" | "error">> & Partial<Pick<BaseProps, never>>'
interface MyPropsProps extends Props {
when: (value: string) => boolean;
}
class FieldFeedback2<P extends MyPropsProps = MyPropsProps> extends FieldFeedback<P> {
static defaultProps = {
when: () => true
};
render() {
this.props.when("now"); // OK, always defined
return <div>Hello</div>;
}
}
// OK
const Test3 = () => <FieldFeedback2 when={value => !!value} />;
// Error: Void not assignable to boolean
const Test4 = () => <FieldFeedback2 when={value => console.log(value)} />;
~~~~
!!! error TS2322: Type '(value: string) => void' is not assignable to type '(value: string) => boolean'.
!!! error TS2322: Type 'void' is not assignable to type 'boolean'.
!!! related TS6500 tests/cases/compiler/reactDefaultPropsInferenceSuccess.tsx:46:3: The expected type comes from property 'when' which is declared here on type 'IntrinsicAttributes & IntrinsicClassAttributes<FieldFeedback2<MyPropsProps>> & Pick<Readonly<{ children?: ReactNode; }> & Readonly<MyPropsProps>, "children" | "error"> & Partial<Pick<Readonly<{ children?: ReactNode; }> & Readonly<MyPropsProps>, "when">> & Partial<Pick<{ when: () => boolean; }, never>>'
// OK
const Test5 = () => <FieldFeedback2 />;
|
