feat: await-able Async methods (#1572)

* make each and family awaitable

* dont pretend they're AsyncFunctions

* check errors

* ensure function name is preserved somehow

* awaitable concat

* awaitable detect

* awaitable every/filter

* awaitable groupBy

* awaitable map/mapValues

* awaitable reduce

* awaitable reject

* awaitable some

* awaitable transform

* awaitable times

* awaitable auto

* awaitable compose/seq

* awaitable whilst/until (lol)

* awaitable forever

* awaitable parallel/race

* awaitable retry

* awaitable series (lol)

* awaitable tryEach

* awaitable waterfall (lol)

* lint

* cleanup, remove noop and unused internal functions

1 files changed, 2 insertions, 1 deletions

diff --git a/lib/reduceRight.js b/lib/reduceRight.js
index dd56a88..994eaf9 100644
--- a/lib/reduceRight.js
+++ b/lib/reduceRight.js
@@ -21,8 +21,9 @@ import reduce from './reduce';
  * @param {Function} [callback] - A callback which is called after all the
  * `iteratee` functions have finished. Result is the reduced value. Invoked with
  * (err, result).
+ * @returns {Promise} a promise, if no callback is passed
  */
 export default function reduceRight (array, memo, iteratee, callback) {
     var reversed = [...array].reverse();
-    reduce(reversed, memo, iteratee, callback);
+    return reduce(reversed, memo, iteratee, callback);
 }