vue兼容手机低版本配置

1.安装babel-plugin-import
安装 npm install babel-plugin-import --save-dev
2.在babel.config文件写入配置

module.exports = {
  presets: [
    "@vue/cli-plugin-babel/preset",
    [
      "@babel/preset-env",
      {
        useBuiltIns: "entry",
        corejs: 3,
        targets: {
          ios: "8",
          android: "4",
          chrome: "58",
        },
      },
    ],
  ],
};