start-sdk/lib/health/trigger/changeOnFirstSuccess.ts

import { TriggerInput } from "./TriggerInput";
import { Trigger } from "./index";

export function changeOnFirstSuccess(o: {
  beforeFirstSuccess: Trigger;
  afterFirstSuccess: Trigger;
}): Trigger {
  return async function* (getInput) {
    const beforeFirstSuccess = o.beforeFirstSuccess(getInput);
    yield;
    let currentValue = getInput();
    beforeFirstSuccess.next();
    for (
      let res = await beforeFirstSuccess.next();
      currentValue?.lastResult !== "success" && !res.done;
      res = await beforeFirstSuccess.next()
    ) {
      yield;
      currentValue = getInput();
    }
    const afterFirstSuccess = o.afterFirstSuccess(getInput);
    for (
      let res = await afterFirstSuccess.next();
      !res.done;
      res = await afterFirstSuccess.next()
    ) {
      yield;
      currentValue = getInput();
    }
  };
}