Error: [BABEL] D:\workspace\pack\src\index.js: Unknown option: .useBuiltIns. Check out https://babeljs.i o/docs/en/babel-core/#options for more information about options.

webpack corejs配置報錯

原因：新的配置多了個中括號[]

• 錯誤代碼

   {
                test: /\.js$/,
                exclude: /node_modules/,
                loader: 'babel-loader',
                options: {

                    presets: ['@babel/preset-env',
                        {
                            //按需加載
                            useBuiltIns: 'usage',
                            corejs: {
                                version: 3
                            },
                            //指定兼容性做到哪個版本的瀏覽器
                            targets: {
                                chrome: '60',
                                firefox: '60',
                                ie: '9',
                                safari: '10'
                            }
                        }
                    ]

                }
            },

• 正確代碼

 {
                test: /\.js$/,
                exclude: /node_modules/,
                loader: 'babel-loader',
                options: {

                    presets: [['@babel/preset-env',
                        {
                            //按需加載
                            useBuiltIns: 'usage',
                            corejs: {
                                version: 3
                            },
                            //指定兼容性做到哪個版本的瀏覽器
                            targets: {
                                chrome: '60',
                                firefox: '60',
                                ie: '9',
                                safari: '10'
                            }
                        }
                    ]]

                }
            },