类型定义 tsconfig.json webpack webpack.config.js package.json Babel npm i -D @babel/core @babel/preset-env babel-loader core-js webpack.config.js

ES 6 (2015) ES 7 (2016) ES 8 (2017) ES 9 (2018) ES 10 (2019) ES 11 (2020) ES 12 (2021) ES 13 (2022)