moment-timezone: moment.tz.guess() error

Running moment.tz.guess() produces the following error:

Uncaught TypeError: Cannot read property 'join' of null(…)OffsetAt @ global.js:11363
userOffsets @ global.js:11408
rebuildGuess @ global.js:11475
guess @ global.js:11496
(anonymous function) @ VM762:2
InjectedScript._evaluateOn @ VM757:875
InjectedScript._evaluateAndWrap @ VM757:808
InjectedScript.evaluate @ VM757:664

OS: Windows 7, Build 7601 Browser: Chrome 47.0.2526.111 m Expected timezone: Asia/Tokyo

Opening the tests page on the momentjs website with the same environment produces no errors. However, in my code and as well as in the console in the momentjs site, running moment.tz.guess() results in the same error.

About this issue

Original URL
State: closed
Created 8 years ago
Comments: 17 (7 by maintainers)

Commits related to this issue

Fix catch timezone bug see https://github.com/moment/moment-timezone/issues/294 — committed to freeCodeCamp/freeCodeCamp by deleted user 8 years ago
Handle uncommon output from Date#toTimeString. Addresses #294 — committed to timrwood/moment-timezone by timrwood 8 years ago

Most upvoted comments

This is released in 0.5.1.

timrwood on Mar 1, 2016

Why not keep this issue open until that PR is merged? Otherwise people subscribed to this issue won’t know when the bug if fixed.

BerkeleyTrue on Feb 26, 2016

Sorry for the delay. .guess() is a brand new API, and moment-timezone is still on 0.x. Despite it being fairly complete, there are bound to be occasional bugs. I’ll look into this closer. Thanks.

mattjohnsonpint on Feb 17, 2016

We have over a dozen users reporting this error. Is there a timeline for a fix on this?

ref https://github.com/freecodecamp/freecodecamp/issues/6633

BerkeleyTrue on Feb 3, 2016