Typescript在用withStyles和withTranslation HOC包装React组件后显示错误

Question

我正在尝试使用Typescript编写React组件，withStyles来自@material-ui/core，withTranslation来自react-i18next。这两个包装都是HOC。

Typescript抱怨存在关于类型的错误。

由于某些原因，这条线路不起作用：

export default withTranslation()(withStyles(styles)(HomePage)); // error

然而，如果我只使用Styles或只使用Translation，它可以完美地工作：

export default withTranslation()(HomePage); // ok

export default withStyles(styles)(HomePage); // ok

我知道有一个关于类型、接口的问题，或者以这种方式导出我的组件可能有问题。当我把withRouter和withStyles一起使用时，我也遇到了同样的问题。我通过更改他们在出口行的订单解决了这个错误！(不知道为什么解决TBH(我看到一些解决方案建议将整个组件封装在withStyles下，但我觉得这很难看。有什么建议吗？

这就是错误：

(alias) withStyles<"root", {}, {}>(style: Styles<Theme, {}, "root">, options?: {} | undefined): PropInjector<{
classes: Record<"root", string>;
}, StyledComponentProps<"root">>
import withStyles
Argument of type 'ComponentType<Pick<IProps, "i18n" | "t"> & StyledComponentProps<"root">>' is not assignable to parameter of type 'ComponentType<WithTranslation>'.
Type 'ComponentClass<Pick<IProps, "i18n" | "t"> & StyledComponentProps<"root">, any>' is not assignable to type 'ComponentType<WithTranslation>'.
Type 'ComponentClass<Pick<IProps, "i18n" | "t"> & StyledComponentProps<"root">, any>' is not assignable to type 'ComponentClass<WithTranslation, any>'.
Types of property 'propTypes' are incompatible.
Type 'WeakValidationMap<Pick<IProps, "i18n" | "t"> & StyledComponentProps<"root">> | undefined' is not assignable to type 'WeakValidationMap<WithTranslation> | undefined'.
Type 'WeakValidationMap<Pick<IProps, "i18n" | "t"> & StyledComponentProps<"root">>' is not assignable to type 'WeakValidationMap<WithTranslation>'.
Types of property 'i18n' are incompatible.
Type 'Validator<{ changeLanguage: Function; }> | undefined' is not assignable to type 'Validator<i18n> | undefined'.
Type 'Validator<{ changeLanguage: Function; }>' is not assignable to type 'Validator<i18n>'.
Type '{ changeLanguage: Function; }' is missing the following properties from type 'i18n': t, init, loadResources, use, and 28 more.ts(2345)
index.d.ts(80, 3): 'tReady' is declared here.

这是我的组件：

import React, { PureComponent } from "react";
// i18n
import { withTranslation } from "react-i18next";
import { InterfaceI18n } from "../../i18n";
// Stylus
import { WithStyles } from "@material-ui/core";
import withStyles from "@material-ui/core/styles/withStyles";
import styles from "./HomePage.style";
type WrapperPropsStylus = WithStyles<typeof styles>;
interface IProps extends InterfaceI18n, WrapperPropsStylus {}
class HomePage extends PureComponent<IProps> {
changeLanguage = (lng: string) => {
const { i18n } = this.props;
i18n.changeLanguage(lng);
};
public render() {
const { classes, t } = this.props;
return (
<div className={classes.root}>
<div>
This is the home page (Public page) <br />
</div>
{t("Welcome to React")} <br />
<button onClick={() => this.changeLanguage("de")}>de</button>
<button onClick={() => this.changeLanguage("en")}>en</button>
</div>
);
}
}
export default withTranslation()(withStyles(styles)(HomePage));

Answer 1

为了解决这个问题，我将组件更改为Hooks。只要使用钩子而不是类组件，使用TS就容易多了。