How to get the result of an Activity Execution in TypeScript

Since Activities are referenced by their string name, you can reference them dynamically to get the result of an Activity Execution.

export async function DynamicWorkflow(activityName, ...args) {
  const acts = proxyActivities(/* activityOptions */);

  // these are equivalent
  await acts.activity1();
  await acts['activity1']();

  let result = await acts[activityName](...args);
  return result;
}

The proxyActivities() returns an object that calls the Activities in the function. acts[activityName]() references the Activity using the Activity name, then it returns the results.