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module.exports = {
// 设置预定义环境
presets: [
[
// 指定环境的插件
"@babel/preset-env",
// 配置信息
{
// 要兼容的目标浏览器
targets: {
"chrome": "100",
"ie": "11"
},
// 指定corejs的版本
corejs: "3",
// 使用corejs的方式：usage表示按需加载
useBuiltIns: "usage"
}
]
};