TypeError: dayjs_1.default is not a function

[rogerprz]

Describe the bug
Similar to this #475

TypeError: dayjs_1.default is not a function
controls:       20 |         },
controls:       21 |         'RollupEstActiveUsers': 1,
controls:     > 22 |         'EstCompletionDate': dayjs('1111-11-11'),

Expected behavior
For my tests to pass and not consider dayjs to not be a function.

Information

• Day.js Version 1.10.7
• OS: MacOs and Windows
• Browser Chrome 94.0.4606.7
• Time zone: (Pacific Daylight Time)

[linkurzweg]

@rogerprz I had the same problem, for me the solution was to explicitly import the isBetween plugin every time before using it in a file (like stated in the docs):

import isBetween from 'dayjs/plugin/isBetween'
dayjs.extend(isBetween)

Now my jest test runs just fine :)

[swimhiking]

I have isBetween, and all unit tests works, now I have add new dayjs.extend, then always not working; got TypeError: (0 , dayjs_1.default) is not a function or TypeError: dayjs_1.default.extend is not a function error;

code is working, just unit tests not working