React Native 上的react-i18next 没有重载与此调用打字稿匹配

Question

我正在尝试使用 typescript 4.1.2 在我的 React Native 应用程序中配置react-i18next 11.8.2：

i18n.use(initReactI18next).init({
  resources: {
    en,
    es,
  },
  lng: 'es',
  fallbackLng: 'es',
  interpolation: {
    escapeValue: false,
  },
});

有两个资源文件（en、es）。

但是我使用 useTranslation 挂钩在 TFunction 接口上遇到打字稿错误：

const {t, i18n} = useTranslation(['SelectLanguage']);]

<StyledLabel>{t('SelectLanguage:title')}</StyledLabel>

错误：

No overload matches this call.
  Overload 1 of 2, '(props: Pick<Pick<TextProps & RefAttributes<Text>, "key" | "ref" | "style" | "onLayout" | "testID" | "nativeID" | "accessible" | "accessibilityActions" | ... 35 more ... | "dataDetectorType"> & Partial<...>, "key" | ... 42 more ... | "dataDetectorType"> & { ...; } & { ...; } & { ...; }): ReactElement<...>', gave the following error.
    Type 'TFunctionResult' is not assignable to type 'string | number | TextElement | ChildElement[] | (string & {}) | (string & ReactElement<any, string | ((props: any) => ReactElement<any, string | ... | (new (props: any) => Component<any, any, any>)> | null) | (new (props: any) => Component<...>)>) | ... 20 more ... | undefined'.
      Type 'null' is not assignable to type 'string | number | TextElement | ChildElement[] | (string & {}) | (string & ReactElement<any, string | ((props: any) => ReactElement<any, string | ... | (new (props: any) => Component<any, any, any>)> | null) | (new (props: any) => Component<...>)>) | ... 20 more ... | undefined'.
  Overload 2 of 2, '(props: StyledComponentPropsWithAs<typeof Text, any, {}, never>): ReactElement<StyledComponentPropsWithAs<typeof Text, any, {}, never>, string | ... 1 more ... | (new (props: any) => Component<...>)>', gave the following error.
    Type 'TFunctionResult' is not assignable to type 'string | number | TextElement | ChildElement[] | (string & {}) | (string & ReactElement<any, string | ((props: any) => ReactElement<any, string | ... | (new (props: any) => Component<any, any, any>)> | null) | (new (props: any) => Component<...>)>) | ... 20 more ... | undefined'.
      Type 'null' is not assignable to type 'string | number | TextElement | ChildElement[] | (string & {}) | (string & ReactElement<any, string | ((props: any) => ReactElement<any, string | ... | (new (props: any) => Component<any, any, any>)> | null) | (new (props: any) => Component<...>)>) | ... 20 more ... | undefined'.ts(2769)
text.component.d.ts(15, 5): The expected type comes from property 'children' which is declared here on type 'IntrinsicAttributes & Pick<Pick<TextProps & RefAttributes<Text>, "key" | "ref" | "style" | "onLayout" | "testID" | ... 38 more ... | "dataDetectorType"> & Partial<...>, "key" | ... 42 more ... | "dataDetectorType"> & { ...; } & { ...; } & { ...; }'
text.component.d.ts(15, 5): The expected type comes from property 'children' which is declared here on type 'IntrinsicAttributes & Pick<Pick<TextProps & RefAttributes<Text>, "key" | "ref" | "style" | "onLayout" | "testID" | ... 38 more ... | "dataDetectorType"> & Partial<...>, "key" | ... 42 more ... | "dataDetectorType"> & { ...; } & { ...; } & { ...; }'

我可以通过解析 i18n 翻译的结果来解决这个错误：

<StyledLabel>{t<string>('SelectLanguage:title')}</StyledLabel>

您知道为什么会发生这种情况吗？我认为它可能是 StyledLabel 道具，它只是 @ui-kitten/components Text

的一个样式组件

import styled from 'styled-components/native';
import {Text} from '@ui-kitten/components';

export const StyledLabel = styled(Text)`
  margin-bottom: 5px;
`;

UI Kitten 的text.组件：

export declare class Text extends React.Component<TextProps> {
    render(): React.ReactElement<RNTextProps>;
}
export {};

Answer 1

在错误信息中，你可以找到问题所在。

类型“TFunctionResult”不可分配给类型“string |”数量 | 文本元素 |子元素[] | （字符串&{}）| （细绳 ＆ 反应元素

TFunctionResult

仅接受字符串

解决方案：您需要始终发送一个字符串并将其引用为字符串

<StyledLabel>{t<string>('SelectLanguage:title')}</StyledLabel>

第二种解决方案

<StyledLabel>{`${t('SelectLanguage:title')}`}</StyledLabel>

Answer 2

创建react-i18next.d.ts

import "react-i18next";

import type * as translations from "locales";

declare module "react-i18next" {
  type DefaultResources = typeof translations;
  interface Resources extends DefaultResources {}
}

declare module "react-i18next" {
  type Namespace = keyof typeof translations;
  type Keys<N extends Namespace> = keyof typeof translations[N];

  interface TFunction<
    TResult extends TFunctionResult = string,
    TKeys extends TFunctionKeys = string,
    TInterpolationMap extends object = StringMap
  > {
    // basic usage
    (key: TKeys | TKeys[], options?: TOptions<TInterpolationMap> | string): TResult;
    // overloaded usage
    (key: TKeys | TKeys[], defaultValue?: string, options?: TOptions<TInterpolationMap> | string): TResult;
  }

  type UseTranslationResult<N> = {
    t: TFunction<string, Keys<N>>;
    i18n: i18n;
    ready: boolean;
  };
  export function useTranslation<N extends Namespace>(ns: N, options?: UseTranslationOptions): UseTranslationResult<N>;
}

Answer 3

就我而言，我使用的是 React 类型的 ^18 版本。如果您使用的是 React 17，请使用正确的版本：

    "@types/react": "17.0.19",
    "@types/react-dom": "17.0.9",

Answer 4

另一种解决方案是使用 withTranslation

import React from "react";
import { Link, Redirect } from "react-router-dom";
import "./Screen.css";
import ImageHolder from "../../../../assets/imageholder.png";
import { withTranslation } from "react-i18next";

export interface Screen3Props {
  t: any;
}

const Screen3: React.FunctionComponent<Screen3Props> = ({ t }: Screen3Props) => {
  const [redirect, setRedirect] = React.useState(false);
  return (
    <div className="ms-welcome initPage">
      <p className="h1">{t("SEARCH_PRIMARY_TEXT")}</p>
      <p className="h2">{t("SEARCH_SECONDARY_TEXT")}</p>
    </div>
  );
};

export default withTranslation()(Screen3);

 

Answer 5

t('SelectLanguage:title').toString() 为我解决了这个问题