Function _async

_async<A extends any[], R>(
fn: (...args: A) => Generator<any, R, any>,
): (...args: A) => Promise<R>
Tricks the TS compiler into thinking that a model flow generator function can be awaited (is a promise).
Type Parameters
- A extends any[]
  Function arguments.
- R
  Return value.
Parameters
- fn: (...args: A) => Generator<any, R, any>
  Flow function.
Returns (...args: A) => Promise<R>