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This topic created in 2439 days ago, the information mentioned may be changed or developed.
```
function check(v: unknown): v is { name: string; age: number } {
if (typeof v !== 'object' || v === null) {
return false;
}
const a = v as { name: unknown; age: unknown };
if (typeof a.name !== 'string' || typeof a.age !== "number") {
return false;
}
return true;
}
```
其中 `const a = v as { name: unknown; age: unknown }` 比较丑, 怎么写才好?
function check(v: unknown): v is { name: string; age: number } {
if (typeof v !== 'object' || v === null) {
return false;
}
const a = v as { name: unknown; age: unknown };
if (typeof a.name !== 'string' || typeof a.age !== "number") {
return false;
}
return true;
}
```
其中 `const a = v as { name: unknown; age: unknown }` 比较丑, 怎么写才好?
 | 1 iugo OP 根据 https://github.com/microsoft/TypeScript/issues/31132 的记录, #21732 'Worth a try, accepting PRs'. 也许现在没什么好的解决办法, 但将来会有吧. |
 | 2 momocraft Aug 22, 2019  1 把这里的 unknown 改成 any，在获得 unknown 值的地方用 unknown |
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