Question

我正在编译React Project时遇到以下错误

未找到模块：无法解析'/ Users / mirasmith / Desktop / KPV1-Project-master / src / _services'中的'config'

中的教程

我正确地遵循了本教程，但是如果我遗漏了任何内容，则不会。我正在尝试创建用户注册并登录。

我不知道他们是否在谈论我添加到开发环境中的webpack文件。我已经创建了，但是什么也没发生，结果还是一样。

user.service.js

import config from 'config';
import { authHeader } from '../_helpers';

export const userService = {
    login,
    logout,
    register,
    getAll,
    getById,
    update,
    delete: _delete
};

function login(username, password) {
    const requestOptions = {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({ username, password })
    };

    return fetch(`${config.apiUrl}/users/authenticate`, requestOptions)
        .then(handleResponse)
        .then(user => {
            // store user details and jwt token in local storage to keep user logged in between page refreshes
            localStorage.setItem('user', JSON.stringify(user));

            return user;
        });
}

function logout() {
    // remove user from local storage to log user out
    localStorage.removeItem('user');
}

function getAll() {
    const requestOptions = {
        method: 'GET',
        headers: authHeader()
    };

    return fetch(`${config.apiUrl}/users`, requestOptions).then(handleResponse);
}

function getById(id) {
    const requestOptions = {
        method: 'GET',
        headers: authHeader()
    };

    return fetch(`${config.apiUrl}/users/${id}`, requestOptions).then(handleResponse);
}

function register(user) {
    const requestOptions = {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify(user)
    };

    return fetch(`${config.apiUrl}/users/register`, requestOptions).then(handleResponse);
}

function update(user) {
    const requestOptions = {
        method: 'PUT',
        headers: { ...authHeader(), 'Content-Type': 'application/json' },
        body: JSON.stringify(user)
    };

    return fetch(`${config.apiUrl}/users/${user.id}`, requestOptions).then(handleResponse);;
}

// prefixed function name with underscore because delete is a reserved word in javascript
function _delete(id) {
    const requestOptions = {
        method: 'DELETE',
        headers: authHeader()
    };

    return fetch(`${config.apiUrl}/users/${id}`, requestOptions).then(handleResponse);
}

function handleResponse(response) {
    return response.text().then(text => {
        const data = text && JSON.parse(text);
        if (!response.ok) {
            if (response.status === 401) {
                // auto logout if 401 response returned from api
                logout();
                window.location.reload(true);
            }

            const error = (data && data.message) || response.statusText;
            return Promise.reject(error);
        }

        return data;
    });
}

webpack.config.js

var HtmlWebpackPlugin = require('html-webpack-plugin');

module.exports = {
    mode: 'development',
    resolve: {
        extensions: ['.js', '.jsx']
    },
    module: {
        rules: [
            {
                test: /\.jsx?$/,
                loader: 'babel-loader'
            }
        ]
    },
    plugins: [new HtmlWebpackPlugin({
        template: './src/index.html'
    })],
    devServer: {
        historyApiFallback: true
    },
    externals: {
        // global app config object
        config: JSON.stringify({
            apiUrl: 'http://localhost:3000'
        })
    }
}

https://gyazo.com/3b45f2c867e3623900f35cd7c149a112

找不到webpack外部配置

0 个答案: