reactjs - forwardRef : Property 'ref' does not exist on type 'IntrinsicAttributes' 的泛型错误

当将forwardRef与泛型一起使用时，我得到Property 'children' does not exist on type 'IntrinsicAttributes'或Property 'ref' does not exist on type 'IntrinsicAttributes'。

https://codesandbox.io/s/react-typescript-0dt6d?fontsize=14

上面CodeSandbox链接中的相关代码在此处复制:

interface SimpleProps<T extends string>
  extends React.HTMLProps<HTMLButtonElement> {
  random: T;
}

interface Props {
  ref?: React.RefObject<HTMLButtonElement>;
  children: React.ReactNode;
}

function WithGenericsButton<T extends string>() {
  return React.forwardRef<HTMLButtonElement, Props & SimpleProps<T>>(
    ({ children, ...otherProps }, ref) => (
      <button ref={ref} className="FancyButton" {...otherProps}>
        {children}
      </button>
    )
  );
}

() => (
  <WithGenericsButton<string> ref={ref} color="green">
    Click me! // Errors: Property 'children' does not exist on type 'IntrinsicAttributes'
  </WithGenericsButton>
)

这里提出了一个潜在的解决方案，但不确定如何在这种情况下实现:
https://github.com/microsoft/TypeScript/pull/30215
(从https://stackoverflow.com/a/51898192/9973558找到)

最佳答案

因此，这里的主要问题是您要在渲染器中返回React.forwardRef的结果，这对于渲染函数而言不是有效的返回类型。您需要将forwardRef结果定义为它自己的组件，然后将其呈现在WithGenericsButton高阶组件中，如下所示:

import * as React from "react";

interface SimpleProps<T extends string> {
  random: T;
}

interface Props {
  children: React.ReactNode;
  color: string;
}

function WithGenericsButton<T extends string>(
  props: Props & SimpleProps<T> & { ref: React.Ref<HTMLButtonElement> }
) {
  type CombinedProps = Props & SimpleProps<T>;
  const Button = React.forwardRef<HTMLButtonElement, CombinedProps>(
    ({ children, ...otherProps }, ref) => (
      <button ref={ref} className="FancyButton" {...otherProps}>
        {children}
      </button>
    )
  );
  return <Button {...props} />;
}

const App: React.FC = () => {
  const ref = React.useRef<HTMLButtonElement>(null);
  return (
    <WithGenericsButton<string> ref={ref} color="green" random="foo">
      Click me!
    </WithGenericsButton>
  );
};

如果将其放在沙盒或游乐场中，您会看到现在已正确键入props，包括random的T Prop

关于reactjs - forwardRef : Property 'ref' does not exist on type 'IntrinsicAttributes' 的泛型错误，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/57750777/