[TypeScript] moment 2.29.3 Property 'tz' does not exist on type 'typeof moment'

[AbdelrahmanHafez]

Versions:

• moment-timezone: 0.5.34
• moment: 2.29.3
• TypeScript: 4.6.3
• Node: 16.14.2

Issue description:

import 'moment-timezone';
import moment from 'moment';
moment.tz.setDefault('UTC');

Gives the following TypeScript compilation error:

Property 'tz' does not exist on type 'typeof moment' 

Downgrading to moment 2.9.2 fixes the issue, I don't have @types/moment-timezone installed.

Seems similar to #385

[aailyin]

The same issue with versions:

"moment": "^2.29.3",
"moment-timezone": "^0.5.34",
"typescript": "~4.5.5"

Downgraded to 2.29.1, but it contains vulnerabilities.

[AbdelrahmanHafez]

@aailyin
For what it's worth, you don't need @types/moment-timezone anymore, moment-timezone is shipped with its own types.

[aailyin]

@AbdelrahmanHafez Ah, you're right. Removed. Thanks!

[gilmoreorless]

This is probably caused by having multiple versions of moment in your package dependencies somewhere. See #982 (comment) for a more detailed explanation.

[AbdelrahmanHafez]

I ended up removing import moment from 'moment' altogether in favor of import moment from 'moment-timezone'.
I also removed moment from package.json.

The expectation here is to have the same exact behavior, and moment.tz.setDefault('UTC'); will reflect on everywhere as it was before with moment. Correct? @gilmoreorless

[gilmoreorless]

@AbdelrahmanHafez that sounds right to me.

[AbdelrahmanHafez]

@gilmoreorless Thank you 👍