Javascript Await 是 async 函数中的保留字错误
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Await is a reserved word error inside async function
提问by Ilja
I am struggling to figure out the issue with the following syntax:
我正在努力用以下语法找出问题：
export const sendVerificationEmail = async () =>
(dispatch) => {
try {
dispatch({ type: EMAIL_FETCHING, payload: true });
await Auth.sendEmailVerification();
dispatch({ type: EMAIL_FETCHING, payload: false }))
} catch (error) {
dispatch({ type: EMAIL_FETCHING, payload: false });
throw new Error(error);
}
};
I keep getting error saying:
我不断收到错误说：
await is a reserved word
await 是一个保留字
...but isn't it legal within an async function?
...但它在异步函数中不合法吗？
The dispatch bit is coming from the react-thunklibrary.
调度位来自react-thunk库。
回答by JLRishe
In order to use await, the function directly enclosing it needs to be async. According to your comment, adding asyncto the inner function fixes your issue, so I'll post that here:
为了使用await，直接封闭它的函数需要是异步的。根据您的评论，添加async到内部函数可以解决您的问题，因此我将在此处发布：
export const sendVerificationEmail = async () =>
async (dispatch) => {
try {
dispatch({ type: EMAIL_FETCHING, payload: true });
await Auth.sendEmailVerification();
dispatch({ type: EMAIL_FETCHING, payload: false }))
} catch (error) {
dispatch({ type: EMAIL_FETCHING, payload: false });
throw new Error(error);
}
};
Possibly, you could remove the asyncfrom the outer function because it does not contain any asynchronous operations, but that would depend on whether the caller of that sendVerificationEmailis expecting sendVerificationEmailto return a promise or not.
可能，您可以async从外部函数中删除 ，因为它不包含任何异步操作，但这取决于它的调用者是否sendVerificationEmail希望sendVerificationEmail返回承诺。
