1 files changed, 21 insertions, 0 deletions
diff --git a/date-fns/src/isValid/benchmark.js b/date-fns/src/isValid/benchmark.js
new file mode 100644
index 0000000..c935bc8
--- /dev/null
+++ b/date-fns/src/isValid/benchmark.js
@@ -0,0 +1,21 @@
+// @flow
+/* eslint-env mocha */
+/* global suite, benchmark */
+
+import isValid from '.'
+import moment from 'moment'
+
+suite('isValid', function () {
+  benchmark('date-fns', function () {
+    return isValid(this.invalidDate)
+  })
+
+  benchmark('Moment.js', function () {
+    return this.invalidMoment.isValid()
+  })
+}, {
+  setup: function () {
+    this.invalidDate = new Date(NaN)
+    this.invalidMoment = moment(new Date(NaN))
+  }
+})