ES6 Module Support?

I am trying to use this library in a polymer 3 typescript project. Would it be possible to add support for es6 modules?

Code

import dayjs from 'dayjs';

Result

my-app.ts:73 One or more components failed to load SyntaxError: The requested module '../node_modules/dayjs/dayjs.min.js' does not provide an export named 'default'

Workaround

<script src="node_modules/dayjs/dayjs.min.js" async></script>

[hiredgunhouse]

I try that:

import * as dayjs from 'dayjs'
var someDate = dayjs(new Date()).add(28, 'day')

and I get dayjs is not a function How come there is no sample of ES6 import in the docs?

[ghost]

try this import * as dayjs from 'dayjs';