我在这里学习如何使用前向引用我有一个 FC,我需要在其中初始化所有引用,然后将它们传递给它的子项,这样我就可以获得一些 chartjs 图表的画布实例。但是使用 forwardRef 我得到一个类型错误,说 ref 不是孩子的属性。const BUIDashboard: React.FC = () => { const chartRef = React.createRef<RefObject<HorizontalBar>>()... return ( <Child ref={chartRef} <------------------- TYPE ERROR HERE isLoading={isLoadingChild} data={childData} /> )}child没有错误但是是这样设置的type Props = { rootProps?: DashboardCardProps isLoading?: boolean data?: BUIMetrics['breachBreakdownByOutcome']}const Child: React.FC<Props> = React.forwardRef(({ rootProps, isLoading, data }, ref: RefObject<HorizontalBar>) => { return ( <HorizontalBar ref={ref}/> )}我是否错误地为孩子定义了参数?我认为问题可能出在这一行const Child: React.FC<Props>所以我将道具类型更新为type Props = { rootProps?: DashboardCardProps isLoading?: boolean data?: BUIMetrics['breachBreakdownByOutcome']} & { ref: RefObject<HorizontalBar> }但是,子组件声明会抛出此错误:TS2322: Type 'ForwardRefExoticComponent<Pick<Props, "rootProps" | "isLoading" | "data"> & RefAttributes<HorizontalBar>>' is not assignable to type 'FC<Props>'. Types of property 'defaultProps' are incompatible. Type 'Partial<Pick<Props, "rootProps" | "isLoading" | "data"> & RefAttributes<HorizontalBar>> | undefined' is not assignable to type 'Partial<Props> | undefined'. Type 'Partial<Pick<Props, "rootProps" | "isLoading" | "data"> & RefAttributes<HorizontalBar>>' is not assignable to type 'Partial<Props>'. Types of property 'ref' are incompatible. Type '((instance: HorizontalBar | null) => void) | RefObject<HorizontalBar> | null | undefined' is not assignable to type 'RefObject<HorizontalBar> | undefined'. Type 'null' is not assignable to type 'RefObject<HorizontalBar> | undefined'.这也是明目张胆的广告,但我正试图解决这个问题以解决下面链接的另一个问题。如果您对这个问题有任何见解,也请告诉我。谢谢。
1 回答
天涯尽头无女友
TA贡献1831条经验 获得超9个赞
type Props = {
rootProps?: DashboardCardProps
isLoading?: boolean
data?: BUIMetrics['breachBreakdownByOutcome']
}
const Child = React.forwardRef<RefObject<HorizontalBar>,Props>(({ rootProps, isLoading, data, children }, ref) => {
return (
<HorizontalBar ref={ref}/>
);
})
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