preserve order, make variadic and handle falsy values in concat [fixes #1437] (#1436)

* preserve order in concat

* remove comment

* fix concatLimit linting

* handle variadic and falsy results in concatLimit [fixes #1437]

* fix tests (typos)

* PR fixes

1 files changed, 3 insertions, 3 deletions

diff --git a/lib/concat.js b/lib/concat.js
index 7edf759..b4857c9 100644
--- a/lib/concat.js
+++ b/lib/concat.js
@@ -1,5 +1,5 @@
-import concat from './internal/concat';
-import doParallel from './internal/doParallel';
+import doLimit from './internal/doLimit';
+import concatLimit from './concatLimit';
 
 /**
  * Applies `iteratee` to each item in `coll`, concatenating the results. Returns
@@ -26,4 +26,4 @@ import doParallel from './internal/doParallel';
  *     // files is now a list of filenames that exist in the 3 directories
  * });
  */
-export default doParallel(concat);
+export default doLimit(concatLimit, Infinity);