vuex在ie9中提示错误

vuex在ie9中提示错误

[vuex] vuex requires a Promise polyfill in this browser. 

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解决方法

npm install --save-dev babel-polyfill

在webpack.config.js配置

module.exports = {
  entry: {
    app: ['babel-polyfill','./src/main.js']
  },
};

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详情参考babel-polyfill