Add minDate, maxDate

snippets/maxDate.md

@@ -0,0 +1,19 @@
+### maxDate
+
+Returns the maximum of the given dates.
+
+Use `Math.max.apply()` to find the maximum date value, `new Date()` to convert it to a `Date` object.
+
+```js
+const maxDate = (...dates) => new Date(Math.max.apply(null, ...dates));
+```
+
+```js
+const array = [
+  new Date(2017, 4, 13),
+  new Date(2018, 2, 12),
+  new Date(2016, 0, 10),
+  new Date(2016, 0, 9),
+];
+maxDate(array); // 2018-03-11T22:00:00.000Z
+```

snippets/minDate.md

@@ -0,0 +1,19 @@
+### minDate
+
+Returns the minimum of the given dates.
+
+Use `Math.min.apply()` to find the minimum date value, `new Date()` to convert it to a `Date` object.
+
+```js
+const minDate = (...dates) => new Date(Math.min.apply(null, ...dates));
+```
+
+```js
+const array = [
+  new Date(2017, 4, 13),
+  new Date(2018, 2, 12),
+  new Date(2016, 0, 10),
+  new Date(2016, 0, 9),
+];
+minDate(array); // 2016-01-08T22:00:00.000Z
+```