Update to luxon

README.md

@@ -23,7 +23,7 @@ var ts = require('@mapbox/timespace');
 var timestamp = Date.now();
 var point = [-122.27783203125, 37.84015683604136];
 var time = ts.getFuzzyLocalTimeFromPoint(timestamp, point);
-//=> (a `moment-timezone` object – see https://momentjs.com/timezone/)
+//=> (a `DateTime` object – see https://moment.github.io/luxon/api-docs/index.html#datetime)  
 
 
 var tile = [41, 98, 8];     // the tile [x, y, z] whose timezone we want to know

index.js

@@ -1,6 +1,6 @@
 var tiles = require('./lib/timezones.json');
 var tilebelt = require('@mapbox/tilebelt');
-var moment = require('moment-timezone');
+const { DateTime } = require('luxon');
 var ss = require('simple-statistics');
 
 var z = Object.keys(tiles)[0].split('/').map(Number)[2];
@@ -17,13 +17,13 @@ module.exports = {
  * Returns the local time at the point of interest.
  * @param  {Integer} timestamp   a unix timestamp
  * @param  {Array}   point       a [lng, lat] point of interest
- * @return {Object}              a moment-timezone object
+ * @return {DateTime}            a luxon DateTime object
  */
 function getFuzzyLocalTimeFromPoint(timestamp, point) {
   var tile = tilebelt.pointToTile(point[0], point[1], z).join('/');
   var locale = tiles[tile];
 
-  if (locale) return moment.tz(new Date(timestamp), locale);
+  if (locale) return DateTime.fromMillis(timestamp).setZone(locale);
   else return undefined;
 }
 
@@ -58,7 +58,7 @@ function getFuzzyTimezoneFromTile(tile) {
         // and America/Vancouver are the same. Use a time to determine the
         // abbreviation, in case two similar tz have slightly different
         // daylight savings schedule.
-        var abbr = moment.tz(Date.now(), tz)._z.abbrs[0];
+        var abbr = DateTime.now().setZone(tz).toFormat('ZZZ');
         votes.push(abbr);
         abbrs[abbr] = tz;
       }

package.json

@@ -8,8 +8,7 @@
     "@mapbox/tile-cover": "^3.0.2",
     "d3-queue": "^3.0.3",
     "mkdirp": "^0.5.1",
-    "moment": "^2.12.0",
-    "moment-timezone": "^0.5.5",
+    "luxon": "^3.5.0",
     "rimraf": "^2.5.4",
     "simple-statistics": "^2.3.0",
     "tile-cover": "^3.0.1"

test/timespace.test.js

@@ -1,6 +1,6 @@
 var timezones = require('../lib/timezones.json');
 var test = require('tap').test;
-var moment = require('moment-timezone');
+const { DateTime } = require('luxon');
 var ts = require('../');
 
 var z = Object.keys(timezones)[0].split('/').map(Number)[2];
@@ -44,7 +44,7 @@ test('check zone', function(t) {
   var quadkey2 = '02301023';
 
   if (z === 8) {
-    var expected = moment.tz(new Date(timestamp), 'America/Los_Angeles');
+    var expected = DateTime.fromMillis(timestamp).setZone('America/Los_Angeles');
     t.deepequal(ts.getFuzzyLocalTimeFromPoint(timestamp, point), expected);
     t.equal(ts.getFuzzyTimezoneFromTile(tile), 'America/Los_Angeles');
     t.equal(ts.getFuzzyTimezoneFromQuadkey(quadkey), 'America/Los_Angeles');