Using yarn instead of npm occurs error in importing module

[mgmgpyaesonewin]

TypeError: __WEBPACK_IMPORTED_MODULE_7_moment___default(...)(...).recur is not a function

 recurrence = moment().recur({
          start: this.broadcastData.fromDate,
        }).every(this.broadcastData.repeatQuantity).day();
        let nextDates = recurrence.next(this.broadcastData.repeatQuantity, 'L');

moment().recur cannot import directly.

[schoening]

I have the same problem using yarn add moment-recur and using it by
import "moment-recur"

The issue is solved by npm install moment-recur but thats hacky..

I am using TypeScript by the way, have to use //@ts-ignore however and I dont think the TypeScript part is the issue here.

[jefbarn]

With moment plugins it is important that all the plugins are using the same version of moment.
Check this using yarn list moment

If it is resolving to multiple copies of moment, you can fix this by limiting your max version in your dependencies, or adding a 'resolutions' to your package.json

  "resolutions": {
    "**/moment": "2.21.0"
  },

[toninofox]

I have synchronized my versions of moment to the same one and this solved the issue. Thanks @jefbarn!