added web vendorsHEADmaster

1 files changed, 38 insertions, 0 deletions

diff --git a/date-fns/src/differenceInSeconds/index.ts b/date-fns/src/differenceInSeconds/index.ts
new file mode 100644
index 0000000..d76b0e3
--- /dev/null
+++ b/date-fns/src/differenceInSeconds/index.ts
@@ -0,0 +1,38 @@
+import differenceInMilliseconds from '../differenceInMilliseconds/index'
+import requiredArgs from '../_lib/requiredArgs/index'
+
+/**
+ * @name differenceInSeconds
+ * @category Second Helpers
+ * @summary Get the number of seconds between the given dates.
+ *
+ * @description
+ * Get the number of seconds between the given dates.
+ *
+ * ### v2.0.0 breaking changes:
+ *
+ * - [Changes that are common for the whole library](https://github.com/date-fns/date-fns/blob/master/docs/upgradeGuide.md#Common-Changes).
+ *
+ * @param {Date|Number} dateLeft - the later date
+ * @param {Date|Number} dateRight - the earlier date
+ * @returns {Number} the number of seconds
+ * @throws {TypeError} 2 arguments required
+ *
+ * @example
+ * // How many seconds are between
+ * // 2 July 2014 12:30:07.999 and 2 July 2014 12:30:20.000?
+ * const result = differenceInSeconds(
+ *   new Date(2014, 6, 2, 12, 30, 20, 0),
+ *   new Date(2014, 6, 2, 12, 30, 7, 999)
+ * )
+ * //=> 12
+ */
+export default function differenceInSeconds(
+  dirtyDateLeft: Date | number,
+  dirtyDateRight: Date | number
+): number {
+  requiredArgs(2, arguments)
+
+  const diff = differenceInMilliseconds(dirtyDateLeft, dirtyDateRight) / 1000
+  return diff > 0 ? Math.floor(diff) : Math.ceil(diff)
+}