TypeError: moment().tz is not a function

Question

When testing using jasmine, I am getting this error.

TypeError: moment.tz is not a function

My code that I try to test is

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Answer 1

I've encountered this problem too. It works for years, but after a refactor, it doesn't work. As I've investigated, moment-timezone@0.5.13 depends on moment@>=2.9.0, which might be different from moment itself.

In my case, moment-timezone uses moment@2.24.0, and moment itself version is 2.18.1. Causes moment-timezone decorated wrong version of moment.

I've change yarn.lock like this:

moment-timezone@0.5.13:
  version "0.5.13"
  resolved "https://arti-dev.ss.aws.fwmrm.net/api/npm/fw-npm/moment-timezone/-/moment-timezone-0.5.13.tgz#99ce5c7d827262eb0f1f702044177f60745d7b90"
  integrity sha1-mc5cfYJyYusPH3AgRBd/YHRde5A=
  dependencies:
    moment ">= 2.9.0"

moment@2.18.1, moment@>= 2.9.0:
  version "2.18.1"
  resolved "https://arti-dev.ss.aws.fwmrm.net/api/npm/fw-npm/moment/-/moment-2.18.1.tgz#c36193dd3ce1c2eed2adb7c802dbbc77a81b1c0f"
  integrity sha1-w2GT3Tzhwu7SrbfIAtu8d6gbHA8=

moment & moment-timezone could be used substitute for each other in this case.