vuex使用面板报 Unexpected token错误

Module build failed: SyntaxError: D:/frontend/webtest/src/components/mutations.vue: Unexpected token (18:4)

npm install --save-dev babel-preset-es2015  babel-plugin-transform-object-rest-spread

{
  "presets": [
    ["es2015",
      {
        "modules": false
      }
    ]
  ],
  "plugins": [
    "transform-object-rest-spread"
  ]
}