forwarding ref to react.FC gives type error: Property ref does not exist on type 'IntrinsicAttributes & Props & { children :? ReactNode}

Question

我正在学习如何在这里使用前向引用我有一个 FC，我需要在其中初始化我所有的引用然后将它们传递给它的 children 这样我就可以获得 canvas 实例一些 chartjs 图表。但是使用 forwardRef 我得到一个类型错误说 ref is not a 属性 of the child.

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，但设置成这样

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}/>
    )
}

我是否为 child 定义了错误的参数？

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> }

然而 Child 组件声明抛出此错误：

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。谢谢你。 Using react-pdf with react-chartjs-2 to generate a pdf

Answer 1

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}/>
    );
})

forwarding ref to react.FC gives type error: Property ref does not exist on type 'IntrinsicAttributes & Props & { children :? ReactNode}

forwarding ref to react.FC gives type error: Property ref does not exist on type 'IntrinsicAttributes & Props & { children :? ReactNode}

javascript

typescript

reactjs

react-ref