dayjs

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Exception:

node:internal/process/promises:246
          triggerUncaughtException(err, true /* fromPromise */);
          ^

TypeError: Cannot set property '$timezone' of undefined
    at M.f.tz (/root/v3/node_modules/dayjs/plugin/timezone.js:1:1271)
    at Function.withdrawalCompleted (/root/v3/dist/core/common/utils/TelegramNotification.js:31:54)
    at EventEmitter.<anonymous> (/root/v3/dist/core/withdrawal/services/status.service.js:124:63)
    at runMicrotasks (<anonymous>)
    at processTicksAndRejections (node:internal/process/task_queues:96:5)

Code (withdrawalCompleted):

import * as DayJS from 'dayjs'
import * as DayJSTimezone from 'dayjs/plugin/timezone'

DayJS.extend(DayJSTimezone)

export class Notification {
     public static async withdrawalCompleted(withdrawal) {
        const dateText = DayJS(withdrawal.createdAt).tz('Europe/Moscow').format('dd.LL.yyyy HH:mm:ss ZZZZ')
        ...
    }
}

Details:

node v16.5.0
npm v7.19.1
dayjs v1.10.6

Do you use Typescript ? If yes. Enable esmodule interop

// tsconfig.json
{
    "extends": "fastify-tsconfig",
    "compilerOptions": {
        "outDir": "dist",
        "esModuleInterop": true
    },
    "include": ["src/**/*.ts"]
}

and just use it like this

import DayJS from 'dayjs'
import DayJSTimezone from 'dayjs/plugin/timezone'

DayJS.extend(DayJSTimezone)

export class Notification {
     public static async withdrawalCompleted(withdrawal) {
        const dateText = DayJS(withdrawal.createdAt).tz('Europe/Moscow').format('dd.LL.yyyy HH:mm:ss ZZZZ')
        ...
    }
}

Having the same problem here, even with esModuleInterop: true

Ok, Timezone plugin depends on Utc, don't forget to add it as well !

import DayJS from 'dayjs'
import DayJSUtc from 'dayjs/plugin/utc'
import DayJSTimezone from 'dayjs/plugin/timezone'

DayJS.extend(DayJSUtc)
DayJS.extend(DayJSTimezone)

Same here -

import dayjs from "dayjs";
import utc from "dayjs/plugin/utc";
import timezone from "dayjs/plugin/timezone";

dayjs.extend(timezone);
dayjs.extend(utc);

export const formatTimestamp = (time) => {
  if (!time) {
    return "";
  }
  const tz = dayjs.tz(Number(time) * 1000, "America/New_York");
  return tz.format("MM/DD/YYYY HH:mm");
};

Throws with Uncaught TypeError: Cannot set property '$timezone' of undefined

First of all, please extend UTC plugin first

Ok, Timezone plugin depends on Utc, don't forget to add it as well!

Second, if you still facing some trouble, feel free to reply here with a demo. (https://npm.runkit.com/dayjs)

This may happen when you try to access the time zone without initializing it:

// ❌ Wrong, don't do this!
dayjs("23:05", "HH:mm").format("hh:mm z")
// Uncaught TypeError: Cannot read properties of undefined (reading '$timezone')

// ✅ Correct, do this
dayjs.tz("23:05", "HH:mm", "America/New_York").format("hh:mm z") // '11:05 EDT'

I think it would be more intuitive if dayjs used the implied time zone, but for now, that's how it works.