目前在客户端启动服务器时,我一直收到上面的错误。我正在使用TypeScript、ReactJS和ESLint。自从这个错误困扰我以来,我似乎无法前进。即使是ESLint的GitHub页面也没什么帮助。
在创建了useMutation组件并将其导出到index.ts
后,出现了此错误。不确定如何解决此问题。
Below is my package.json
{
"name": "tinyhouse_client",
"version": "0.1.0",
"private": true,
"dependencies": {
"@testing-library/jest-dom": "^4.2.4",
"@testing-library/react": "^9.3.2",
"@testing-library/user-event": "^7.1.2",
"@types/jest": "^24.0.0",
"@types/node": "^12.0.0",
"@types/react": "^16.9.35",
"@types/react-dom": "^16.9.0",
"@typescript-eslint/parser": "^3.0.2",
"react": "^16.13.1",
"react-dom": "^16.13.1",
"react-scripts": "3.4.1",
"typescript": "~2.23.0"
},
"resolutions": {
"@typescript-eslint/eslint-plugin": "^2.23.0",
"@typescript-eslint/parser": "^2.23.0",
"@typescript-eslint/typescript-estree": "^2.23.0"
},
"scripts": {
"start": "react-scripts start",
" build": "react-scripts build",
"test": "react-scripts test",
"eject": "react-scripts eject"
},
"eslintConfig": {
"extends": "react-app"
},
"browserslist": {
"production": [
">0.2%",
"not dead",
"not op_mini all"
],
"development": [
"last 1 chrome version",
"last 1 firefox version",
"last 1 safari version"
]
},
**strong text** "proxy": "http://localhost:9000"
}
Below is my index.ts
export * from './server';
export * from './useQuery';
export * from './useMutation';
And my useMutation.ts
import { useState } from 'react';
import { server } from './server';
interface State<TData> {
data: TData | null;
loading: boolean;
error: boolean;
}
type MutationTuple<TData, TVariables> = [
(variables?: TVariables | undefined) => Promise<void>,
State<TData>
];
export const useMutation = <TData = any, TVariables = any>(
query: string
): MutationTuple<TData, TVariables> => {
const [state, setState] = useState<State<TData>>({
data: null,
loading: false,
error: false,
})
const fetch = async (variables?: TVariables) => {
try {
setState({ data: null, loading: true, error: false });
const { data, errors } = await server.fetch<TData, TVariables>({ query, variables });
if (errors && errors.length) {
throw new Error(errors[0].message);
}
setState({ data, loading: false, error: false });
} catch (err) {
setState({ data: null, loading: false, error: true });
throw console.error(err);
}
}
return [fetch, state];
};