Javascript Visual Studio中的TS2705错误：ES5/ES3中的异步函数或方法需要'；承诺'；建造师

我知道这个错误已经在几篇文章中讨论过了，但是在遵循所有的解决方案之后，我无法避免这个错误

我正在VS2017中开发react应用程序

下面的代码导致了错误。下面我还共享了tsconfig文件，其中包括

“lib”：[“es2015”]

。有什么办法解决这个问题吗

const fetchData = async () => {//Promise<void> => 
    var dd = await axios.get('api/FeedbackComment/FetchFeedbackActivityByDate',
        {
            params: {
                //activityDate: d3.timeParse("%Y-%m-%d")(d.dateCreated),
                reviewRoundId: props.reviewRoundId,
                submissionId: props.submissionId,
            }
        })
}

{
  "compilerOptions": {
    "noImplicitAny": false,
    "noEmitOnError": false,
    "isolatedModules": true,
    "removeComments": false,
    "sourceMap": true,
    "target": "es6",
    "allowJs": true,
    "checkJs": false,
    "jsx": "preserve",
    "lib": [
      "es2015"
      //"es6",
      //"dom"
    ],
    "moduleResolution": "node",
    "allowSyntheticDefaultImports": true,
    "skipLibCheck": true,
    "esModuleInterop": true,
    "strict": true,
    "forceConsistentCasingInFileNames": true,
    "module": "esnext",
    "resolveJsonModule": true,
    "noEmit": true
  },
  "exclude": [
    "node_modules",
    //"wwwroot"
  ],
  "include": [
    "src/**/*",
    "**/*.spec.ts"
    //"src",
    //"./src/myIndex.d.ts"
  ]
}