Comments (9)
Sorry I made a typo, it's JSX.LibraryManagedAttributes
, it is not under the React
namespace.
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This was very helpful.
Who thinks it is worth adding it to the defaultProps section?
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PR welcome @karfau
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@w1301625107 you need to set AProps
to not have an optional value
property. AProps
is intended to be the props that the component sees inside itself (after defaultProps takes into effect). TypeScript will then work out what is allowed and not allowed to be in the JSX attributes after combining AProps
and defaultProps
.
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@w1301625107 you need to set
AProps
to not have an optionalvalue
property.AProps
is intended to be the props that the component sees inside itself (after defaultProps takes into effect). TypeScript will then work out what is allowed and not allowed to be in the JSX attributes after combiningAProps
anddefaultProps
.
谢谢。但是这样怎么让人知道A 是可选的参数呢
Thank you. But how does this make people know that A is an optional parameter?
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It doesn't. Your AProps
interface is not your external contract for your component, it is the internal contract (what your component implements). If you want to create a type for your external contract (what consumers of your component expect) without rewriting I would do this:
// internal contract, should not be exported out
type AProps = {
value?: number
}
class A extends Component<AProps> {
static defaultProps = { value: 0 }
}
// external contract
export type ApparentAProps = JSX.LibraryManagedAttributes<typeof A, AProps>
from react.
It doesn't. Your
AProps
interface is not your external contract for your component, it is the internal contract (what your component implements). If you want to create a type for your external contract (what consumers of your component expect) without rewriting I would do this:// internal contract, should not be exported out type AProps = { value?: number } class A extends Component<AProps> { static defaultProps = { value: 0 } } // external contract export type ApparentAProps = JSX.ManagedAttributes<typeof A, AProps>
i got an error,how to fix it? @types/react
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If I want to rewrite it, what is the step?
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This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions!
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