Property 'tz' does not exist on type 'Moment' Error

[rama41222]

nodejs version: 12.18.4
moment-timezone version: 0.5.31
moment version: ^2.29.0
ts-node version: happens both in 9.0.0(latest), 8.6.2
command: ts-node --files server/app.ts --project server/tsconfig.build.json

usage

import moment from 'moment-timezone'
moment(somedate).tz(sometimezone)

No @types/moment or @types/moment-timezone installed since deprecated.

What could be the reason ?

PS: Already checked this Issue

[sliceofcode]

I'm having exactly the same issue.

node version: 12.14.1
moment version: 2.24.0
moment-timezone version: 0.5.31
ts-node version: 8.3.0

Usages:

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

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

They yield same result:

TS2339: Property 'tz' does not exist on type 'typeof moment'.

[rama41222]

Any update regarding this ?

[sliceofcode]

I resolved this by downgrading the moment-timezone package to 0.5.28 (instead of 0.5.31).

I found that the offending lines in 0.5.31 with my setup are:

index.d.ts:

zonesForCountry<T extends true>(country: string, with_offset: T): T extends true ? MomentZoneOffset[] : never;
zonesForCountry<T extends false>(country: string, with_offset?: T): T extends false ? string[] : never;

[jrmyio]

Using the latest version at this time of writing:
moment-timezone@0.5.33 and @types/moment-timezone@0.5.30 I do not have the issue:

import 'moment-timezone';
import moment from 'moment';

moment().tz('CEST') <- no errors..

So I think this is issue is resolved.

[manuel-di-iorio]

No issues after installing @types/moment-timezone@0.5.30
Thanks @ConneXNL

[rama41222]

I'm closing this since the issue is resolved.

[vishal21-onelife]

i sove this problem

1. install package
   npm i moment-timezone

2.import time-zone in app.component.ts file
import 'moment-timezone';

3.save and run

-check some moment-timezone package version not work

[AbdelrahmanHafez]

This issue re-occured again with the following versions:

"moment": "2.29.3",
"moment-timezone": "0.5.34"

Downgrading moment to 2.29.2 fixes the issue.

Edit:
Another way to fix things for good is to get rid of moment and rely completely on moment-timezone, you don't need to use both.

import moment from 'moment-timezone';

// use moment as you would if you had imported 'moment';
`

[masimpson123]

I was having this problem in just my test environment. I had to add moment-timezone to the types array in tsconfig.spec.ts. If no types array is present, all @types packages are visible. If a types array is present, only the listed packages are used by the compiler.

TSConfig and Types array documentation:
https://www.typescriptlang.org/tsconfig#types

Refactoring the app to use moment-timezone rather than moment also fixed the problem, but I decided that the tsconfig solution was simpler and less risky.

[MonstraG]

In my case, had to downgrade to 2.29.1 (2.29.2 still failed to build), resulting in

		"moment": "2.29.1",
		"moment-locales-webpack-plugin": "^1.2.0",
		"moment-timezone": "^0.5.34",

my failing usecase:

import moment, { Moment } from "moment";
import "moment-timezone";

const func1 = (day: Moment, seconds: number, timeZone: string): Moment =>
	day.clone().add(seconds, "seconds").tz(timeZone, true).local();

[aailyin]

The same issue with versions:

"moment": "^2.29.3",
"moment-timezone": "^0.5.34",
"@types/moment-timezone": "^0.5.30"

Downgraded to 2.29.1, but it contains vulnerabilities.

[DiRover]

I'm having the same issue.

moment version: 2.24.3
moment-timezone version: 0.5.34

When I wrote the next code, the issue is gone:

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

[gilmoreorless]

This is generally caused by having multiple versions of moment imported at the same time, due to different dependency trees. I've written a full description at #982 (comment)

As noted by @DiRover, importing from only moment-timezone should fix the issue in most cases.

[shnigi]

Solved by @gilmoreorless comments. Changed my import to
import moment, { tz } from "moment-timezone";
And working code
const timeOffset = moment().tz(timezone).format("Z")

[sahilSOLT]

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

//then---------

var currentTimEzone = moment.tz.guess();
console.log('timezone here',currentTimEzone)