How to define Activity Return Values in TypeScript

To import the types of the Activities defined in ./activities, you must first retrieve an Activity from an Activity Handle before you can call it, then define Return Types in your Activity.

import type * as activities from './activities';
const { greet } = proxyActivities<typeof activities>({
  startToCloseTimeout: '1 minute',
});

// A workflow that simply calls an activity
export async function example(name: string): Promise<string> {
  return await greet(name);
}