sundial - npm Package Compare versions

Comparing version 1.2.0 to 1.3.0

lib/datetimeWrapper.js

@@ -43,3 +43,3 @@ // == BDS2 LICENSE ==
      * @param {String} timestamp
-     * @param {Number|String} offset mins ~from~ UTC
+     * @param {Number} offset mins ~from~ UTC
      *
@@ -76,2 +76,29 @@ * @return {Object} JavaScript Date yielding accurate UTC string from .toISOString()
     /*
+     * Apply a timezone and a conversionOffset to a timezone-naive timestamp
+     *
+     * @param {String} timestamp
+     * @param {String} timezone a valid timezone name as per moment-timezone
+     * @param {Number} conversionOffset milliseconds ~from~ UTC
+     *
+     * @return {Object} JavaScript Date yielding accurate UTC string from .toISOString()
+     */
+    applyTimezoneAndConversionOffset: function(timestamp, timezone, conversionOffset) {
+      this.checkTimezoneName(timezone);
+      // NB: the result of this method will *not* yield the correct timezone offset from .getTimezoneOffset()
+      // that is, the offset corresponding to the passed in timezone
+      // because JavaScript Date doesn't do arbitrary timezones, only browser local
+      if (timezone == null) {
+        // some browsers assume no timezone offset means local time and others assume it means UTC
+        // we explicitly make them all act like it is UTC
+        return moment.utc(timestamp).toDate();
+      } else {
+        if (timestamp instanceof Date) {
+          return moment.tz(timestamp.toISOString().slice(0,-5), timezone)
+            .subtract(conversionOffset, 'milliseconds').toDate();
+        }
+        return moment.tz(timestamp, timezone)
+          .subtract(conversionOffset, 'milliseconds').toDate();
+      }
+    },
+    /*
      * Construct a Date from canonically-named time fields in the provided object
@@ -131,2 +158,17 @@ *
     /*
+     * Apply Tidepool timezoneOffset and conversionOffset to a JavaScript Date
+     *
+     * @param {Object} JavaScript Date formed from a deviceTime
+     * @param {Number} timezoneOffset mins ~from~ UTC
+     * @param {Number} conversionOffset milliseconds ~from~ UTC
+     *
+     * @return {Object} JavaScript Date yielding accurate UTC string from .toISOString()
+     */
+    findTimeFromDeviceTimeAndOffsets: function(dt, timezoneOffset, conversionOffset) {
+      return moment.utc(dt)
+        .subtract(timezoneOffset, 'minutes')
+        .subtract(conversionOffset, 'milliseconds')
+        .toDate();
+    },
+    /*
      * Get the floor for a date (see D3's time functions)
@@ -133,0 +175,0 @@ *

package.json

 {
   "name": "sundial",
-  "version": "1.2.0",
+  "version": "1.3.0",
   "description": "Tidepool's datetime wrapper",
@@ -12,3 +12,3 @@ "keywords": [
   "bugs": "https://github.com/tidepool-org/sundial/issues",
-  "license": "BSD-2-clause",
+  "license": "BSD-2-Clause",
   "author": {
@@ -15,0 +15,0 @@ "name": "Eric Tschetter",

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