Merge pull request #996 from caolan/modularization

Modularization

1 files changed, 15 insertions, 0 deletions

diff --git a/lib/whilst.js b/lib/whilst.js
new file mode 100644
index 0000000..feaec00
--- /dev/null
+++ b/lib/whilst.js
@@ -0,0 +1,15 @@
+'use strict';
+
+import noop from 'lodash/noop';
+import rest from 'lodash/rest';
+
+export default function whilst(test, iterator, cb) {
+    cb = cb || noop;
+    if (!test()) return cb(null);
+    var next = rest(function(err, args) {
+        if (err) return cb(err);
+        if (test.apply(this, args)) return iterator(next);
+        cb.apply(null, [null].concat(args));
+    });
+    iterator(next);
+}