Generic Type Infer Failed

[HerrCai0907]

// index.ts
import * as lib from "./lib";
export function test(): void {
  lib.test(new lib.Wrapper<i32>());
}
// lib.ts
export function test<T = i32>(t: Wrapper<T>): void {}
export class Wrapper<T> {
  v: T;
}

It will receive this error

ERROR TS2304: Cannot find name 'Wrapper'.

 export function test<T = i32>(t: Wrapper<T>): void {}
                                  ~~~~~~~
 in assembly/lib.ts(1,34)