Remove Redundant Dev Dependency

package.json

@@ -19,8 +19,7 @@
     "@babel/cli": "^7.12.1",
     "@babel/core": "^7.12.3",
     "@babel/preset-env": "^7.12.1",
-    "mocha": "^8.2.1",
-    "underscore": "1.7.0"
+    "mocha": "^8.2.1"
   },
   "engines": {
     "node": "*"

test/test_formats.js

@@ -1,38 +1,36 @@
-var assert = require('assert');
+var assert = require("assert");
 
-var _ = require('underscore');
-
-var dateFormat = require('../lib/dateformat');
+var dateFormat = require("../lib/dateformat");
 
 var expects = {
-  'default':               'Wed Nov 26 2014 13:19:44',
-  'shortDate':             '11/26/14',
-  'mediumDate':            'Nov 26, 2014',
-  'longDate':              'November 26, 2014',
-  'fullDate':              'Wednesday, November 26, 2014',
-  'shortTime':             '1:19 PM',
-  'mediumTime':            '1:19:44 PM',
-  'longTime':              '1:19:44 PM %TZ_PREFIX%%TZ_OFFSET%',
-  'isoDate':               '2014-11-26',
-  'isoTime':               '13:19:44',
-  'isoDateTime':           '2014-11-26T13:19:44%TZ_OFFSET%',
-  'isoUtcDateTime':        '',
-  'expiresHeaderFormat':   'Wed, 26 Nov 2014 13:19:44 %TZ_PREFIX%%TZ_OFFSET%'
+  default: "Wed Nov 26 2014 13:19:44",
+  shortDate: "11/26/14",
+  mediumDate: "Nov 26, 2014",
+  longDate: "November 26, 2014",
+  fullDate: "Wednesday, November 26, 2014",
+  shortTime: "1:19 PM",
+  mediumTime: "1:19:44 PM",
+  longTime: "1:19:44 PM %TZ_PREFIX%%TZ_OFFSET%",
+  isoDate: "2014-11-26",
+  isoTime: "13:19:44",
+  isoDateTime: "2014-11-26T13:19:44%TZ_OFFSET%",
+  isoUtcDateTime: "",
+  expiresHeaderFormat: "Wed, 26 Nov 2014 13:19:44 %TZ_PREFIX%%TZ_OFFSET%",
 };
 
 function pad(num, size) {
-    var s = num + '';
-    while (s.length < size) {
-      s = '0' + s;
-    }
-    return s;
+  var s = num + "";
+  while (s.length < size) {
+    s = "0" + s;
+  }
+  return s;
 }
 
 function parseOffset(date) {
   var offset = date.getTimezoneOffset();
-  var hours = Math.floor(-1 * offset / 60);
-  var minutes = (-1 * offset) - (hours * 60);
-  var sign = offset > 0 ? '-' : '+';
+  var hours = Math.floor((-1 * offset) / 60);
+  var minutes = -1 * offset - hours * 60;
+  var sign = offset > 0 ? "-" : "+";
   return {
     offset: offset,
     hours: hours,
@@ -46,28 +44,31 @@ function timezoneOffset(date) {
   return offset.sign + pad(offset.hours, 2) + pad(offset.minutes, 2);
 }
 
-describe('dateformat([now], [mask])', function() {
-  _.each(dateFormat.masks, function(value, key) {
-    it('should format `' + key + '` mask', function(done) {
+describe("dateformat([now], [mask])", function () {
+  Object.keys(dateFormat.masks).forEach(function (key) {
+    it("should format `" + key + "` mask", function (done) {
       var now = new Date(2014, 10, 26, 13, 19, 44);
       var tzOffset = timezoneOffset(now);
-      var expected = expects[key].replace(/%TZ_PREFIX%/, 'GMT')
-                                 .replace(/%TZ_OFFSET%/g, tzOffset)
-                                 .replace(/GMT\+0000/g, 'UTC');
-      if (key === 'isoUtcDateTime') {
+      var expected = expects[key]
+        .replace(/%TZ_PREFIX%/, "GMT")
+        .replace(/%TZ_OFFSET%/g, tzOffset)
+        .replace(/GMT\+0000/g, "UTC");
+      if (key === "isoUtcDateTime") {
         var offset = parseOffset(now);
-        now.setHours(now.getHours() - offset.hours,
-                     now.getMinutes() - offset.minutes);
-        var expected = now.toISOString().replace(/\.000/g, '');
+        now.setHours(
+          now.getHours() - offset.hours,
+          now.getMinutes() - offset.minutes
+        );
+        var expected = now.toISOString().replace(/\.000/g, "");
       }
       var actual = dateFormat(now, key);
       assert.strictEqual(actual, expected);
       done();
     });
   });
-  it('should use `default` mask, when `mask` is empty', function(done) {
+  it("should use `default` mask, when `mask` is empty", function (done) {
     var now = new Date(2014, 10, 26, 13, 19, 44);
-    var expected = expects['default'];
+    var expected = expects["default"];
     var actual = dateFormat(now);
 
     assert.strictEqual(actual, expected);