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, 6 insertions, 2 deletions

diff --git a/lib/eachOfLimit.js b/lib/eachOfLimit.js
index f439be6..f65d7d1 100644
--- a/lib/eachOfLimit.js
+++ b/lib/eachOfLimit.js
@@ -1,5 +1,6 @@
 import _eachOfLimit from './internal/eachOfLimit';
 import wrapAsync from './internal/wrapAsync';
+import awaitify from './internal/awaitify'
 
 /**
  * The same as [`eachOf`]{@link module:Collections.eachOf} but runs a maximum of `limit` async operations at a
@@ -20,7 +21,10 @@ import wrapAsync from './internal/wrapAsync';
  * Invoked with (item, key, callback).
  * @param {Function} [callback] - A callback which is called when all
  * `iteratee` functions have finished, or an error occurs. Invoked with (err).
+ * @returns {Promise} a promise, if a callback is omitted
  */
-export default function eachOfLimit(coll, limit, iteratee, callback) {
-    _eachOfLimit(limit)(coll, wrapAsync(iteratee), callback);
+function eachOfLimit(coll, limit, iteratee, callback) {
+    return _eachOfLimit(limit)(coll, wrapAsync(iteratee), callback);
 }
+
+export default awaitify(eachOfLimit, 4)