fetch header 携带自定义请求头，类型不匹配

[Lukedis]

fetch(`${url.baseUrl}${url.user.auth}`, {
    method: 'GET',
    headers: {
      'Content-Type': 'application/json',
      //'Authorization': localStorage.getItem('Authorization'),
    },
  }).then((response) => {
    if (response.status == 200) {
      auth = true;
    }
  });

localStorage.getItem('Authorization')type 是 string|null 和headers要求的参数类型不匹配

[lisongeee]

```ts
fetch(`${url.baseUrl}${url.user.auth}`, {
method: 'GET',
headers: {
'Content-Type': 'application/json',
'Authorization': localStorage.getItem('Authorization')!,
},
}).then((response) => {
if (response.status == 200) {
auth = true;
}
});
```

[IceBay]

'Authorization': `${localStorage.getItem('Authorization')}`,

'Authorization': localStorage.getItem('Authorization') || '',

[Lukedis]

@lisongeee 在不使用！的情况下，还有哪些解决办法

[Track13]

不想用!。那就只能提前类型收窄了。

[musi]

as string