Function tryCatchFinally

packages/context/src/value-promise.ts:213–247

(
  action: () => ValueOrPromise<T>,
  errorAction: (err: unknown) => T | never = err => {
    throw err;
  },
  finalAction: () => void = () => {},
)

 * @typeParam T - Type for the return value
 */
export function tryCatchFinally<T>(
  action: () => ValueOrPromise<T>,
  errorAction: (err: unknown) => T | never = err => {
    throw err;
  },
  finalAction: () => void = () => {},
): ValueOrPromise<T> {
  let result: ValueOrPromise<T>;
  try {
    result = action();
  } catch (err) {
    result = reject(err);
  }
  if (isPromiseLike(result)) {
    return result.then(resolve, reject);
  }

  return resolve(result);

  function resolve(value: T) {
    try {
      return value;
    } finally {
      finalAction();
    }
  }

  function reject(err: unknown): T | never {
    try {
      return errorAction(err);
    } finally {
      finalAction();
    }
  }
}

/**
 * Resolve an iterator of source values into a result until the evaluator