反应,打字稿-无状态和正常组件的类型

时间:2019-01-30 09:51:53

标签: javascript reactjs typescript

我正在尝试实现一个具有ProtectedRoute属性的component组件-它可以是无状态(纯)组件或正常的React组件。

这些是我的类型:

export interface Props {
  isAuthenticated: boolean;
  component: React.PureComponent | React.Component;
  exact?: boolean;
  path: string;
}

这是我的ProtectedRoute组件:

import React from 'react';
import { Redirect, Route } from 'react-router-dom';

import { ROUTES } from '../../constants/routes';

import { Props } from './ProtectedRoute.types';

const ProtectedRoute = (props: Props) => {
  const { isAuthenticated, component: Component, ...rest } = props;
  return (
    <Route
      {...rest}
      children={props =>
        !isAuthenticated ? (
          <Redirect to={{ pathname: ROUTES.login, state: { from: props.location } }} />
        ) : (
          <Component {...props} />
        )
      }
    />
  );
};

export default ProtectedRoute;

我在这里遇到以下错误:

  

类型错误:JSX元素类型“组件”没有任何构造   或致电签名。 TS2604

这是我的用法:

import React from 'react';

import { Route, Switch } from 'react-router-dom';
import ProtectedRoute from './ProtectedRoute';

import { ROUTES } from '../../constants/routes';

import Login from '../Login/Login';
const PlaceholderComponent = () => <div>This is where we will put content.</div>;
const NotFoundPlaceholder = () => <div>404 - Route not found.</div>;

const Routes = () => {
  return (
    <Switch>
      <Route exact path={ROUTES.login} component={Login} />
      {/* TODO protected route */}
      <ProtectedRoute exact path={ROUTES.list} component={PlaceholderComponent} />
      <ProtectedRoute exact path={ROUTES.procedure} component={PlaceholderComponent} />
      {/* catchall route for 404 */}
      <Route component={NotFoundPlaceholder} />
    </Switch>
  );
};

export default Routes;

和此处得到以下错误:

  

类型'()=>元素'不可分配给类型'PureComponent <{},{},   任何> |组件<{},{},any>'。输入“()=>元素”是缺少   类型'Component <{},{},any>'的以下属性:上下文,   setState,forceUpdate,render等3个。 [2322]

这让我觉得,我现在用的是不正确的类型定义。什么是“正确”的方式来进行此事?我的目的是检查ProtectedRoute始终获得一个React组件作为component道具。

2 个答案:

答案 0 :(得分:1)

功能组件和类组件的类型均为ComponentType

应该是:

export interface Props {
  isAuthenticated: boolean;
  component: React.ComponentType;
  exact?: boolean;
  path: string;
}

答案 1 :(得分:0)

可能找到了它,但是由于我不知道这是否是正确的解决方案,因此将其保留为空:

export interface Props {
  isAuthenticated: boolean;
  component: React.ComponentClass<any> | React.StatelessComponent<any>;
  exact?: boolean;
  path: string;
}