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