node.js - TypeORM + Webpack 导致 SyntaxError : Unexpected token for entity file

Question

我已经用 express、node.js 和 webpack 建立了一个非常简单的项目。在配置 webpack.config.js 时安装 TypeORM 后，它会触发实体文件夹中 User.ts 的意外 token 错误。

问题似乎与 ormconfig.json 引用 .ts 实体文件有关。

类似线程中的解决方案似乎是使用带有一些额外参数的 ts-node，但我在这个项目中使用 webpack 并执行捆绑文件。

索引.ts

import 'reflect-metadata';
import { createConnection } from 'typeorm';
import { User } from './entity/User';
createConnection()
    .then(async connection => {
        console.log('Inserting a new user into the database...');
        const user = new User();
        user.firstName = 'Timber';
        user.lastName = 'Saw';
        user.age = 25;
        await connection.manager.save(user);
        console.log('Saved a new user with id: ' + user.id);

        console.log('Loading users from the database...');
        const users = await connection.manager.find(User);
        console.log('Loaded users: ', users);

        console.log(
            'Here you can setup and run express/koa/any other framework.'
        );
    })
    .catch(error => console.log(error));

ormconfig.json

{
    "type": "mssql",
    "host": "*",
    "port": 27017,
    "username": "*",
    "password": "*",
    "database": "*",
    "synchronize": true,
    "logging": false,
    "entities": ["src/entity/**/*.ts"],
    "migrations": ["src/migration/**/*.ts"],
    "subscribers": ["src/subscriber/**/*.ts"],
    "cli": {
        "entitiesDir": "src/entity",
        "migrationsDir": "src/migration",
        "subscribersDir": "src/subscriber"
    }
}

webpack.config.js

module.exports = {
    mode: 'development',
    entry: path.resolve(path.join(__dirname, './src/index.ts')),
    externals: [nodeExternals()],
    name: 'API',
    context: __dirname,
    target: 'node',
    output: {
        path: __dirname + '/dist',
        filename: '[name].bundle.js',
        publicPath: '/',
        libraryTarget: 'commonjs2',
    },
    resolve: {
        extensions: ['.ts', '.tsx', '.js', '.json'],
        modules: [path.resolve(__dirname, 'node_modules')],
    },
    module: {
        rules: [
            {
                test: /\.tsx?$/,
                loader: 'awesome-typescript-loader',
                exclude: [/node_modules/, /dist/],
            },
            {
                test: /\.js$/,
                loader: 'babel-loader',
                exclude: [/node_modules/, /dist/],
                options: {
                    babelrc: true,
                },
            },
        ],
    },
    plugins: [new CleanWebpackPlugin()],
};

报错信息如下(代码引用TypeORM默认自带的用户实体文件

api/src/entity/User.ts:1
(function (exports, require, module, __filename, __dirname) { import { Entity, PrimaryGeneratedColumn, Column } from 'typeorm';
                                                                     ^

SyntaxError: Unexpected token {
    at new Script (vm.js:80:7)
    at createScript (vm.js:274:10)
    at Object.runInThisContext (vm.js:326:10)
    at Module._compile (internal/modules/cjs/loader.js:664:28)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:712:10)
    at Module.load (internal/modules/cjs/loader.js:600:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:539:12)
    at Function.Module._load (internal/modules/cjs/loader.js:531:3)
    at Module.require (internal/modules/cjs/loader.js:637:17)
    at require (internal/modules/cjs/helpers.js:22:18)

Answer 1

我昨天通过 Soufiaane 找到了解决方案没有涵盖 webpack 方面，但仍然解决了问题。

删除ormconfig.json文件并在createConnection函数中传递数据库配置。

import { User } from './entity'
// import every other entity you have
// .......

await createConnection({
        type: 'sqlite',
        database: 'database.sqlite',
        synchronize: true,
        logging: true,
        entities: [
            User // pass your entities in here
        ]
    })