Async/await syntaxes

[vincentdchan]

Promise:

class Promise<T> {

  public then(cb: (t: T) => Promise<T>): Promise<T> {
    // ...
  }
 
  public catch(cb: (t: T) => Promise<T>): Promise<T> {
   // ...
  }

}

Syntaxes:

Async function:

async function foo() {
  // ...
}

Await:

async function bar() {
  const a = foo().await;
}