refactor: Extract some array helper methods

newrelic · Jul 7, 2020 · c62c614 · c62c614
1 parent ea895b4
commit c62c614
Showing 1 changed file with 10 additions and 0 deletions.
diff --git a/src/utils/array.js b/src/utils/array.js
@@ -0,0 +1,10 @@
+export const range = (a, b) => [...Array(b + 1).keys()].slice(a);
+
+export const partition = (arr, predicate) =>
+  arr.reduce(
+    ([truthy, falsey], item) =>
+      predicate(item)
+        ? [truthy.concat(item), falsey]
+        : [truthy, falsey.concat(item)],
+    [[], []]
+  );