Module has no has no default export with ts and rollup

[waitingsong]

import dayjs from 'dayjs'

compile with rollup , got error `Module

".../source/node_modules/dayjs/index" has no default export.

[kaseyhinton]

any updates on this?

[Kikisek]

Try import * as dayjs from 'dayjs', it helped me 😃

[aibrahim3546]

@Kikisek I did like what you mentioned...

like this:

import * as dayjs from dayjs

I am hitting this error now:

Uncaught TypeError: dayjs is not a function

[samtsai]

@aibrahim3546 to be sure, do you have quotes around the second dayjs?

import * as dayjs from 'dayjs'

[wangyiz4262]

@waitingsong @iamkun I re-did the Typescript definition in #466 which should fix the problem of default import. The current index.d.ts file does not make much sense to expose class to the user.

[iamkun]

Updates:

From v1.8.1 we could simply use import dayjs from 'dayjs' in a TypeScript project.

[Smirking]

Looks like this was reverted again here #476, so it's broken again as of 1.8.4 for rollup and things that use rollup, ng-packagr etc

[conrado-l]

As @Smirking said, this is broken as of now and we have to use @Kikisek workaround.

[orige]

Even with @Kikisek workaround, I'm getting:
TypeError: dayjs is not a function

version: 1.8.28

[blestab]

Also getting this version: 1.8.35

[existe-deja]

For those who are experiencing the Error: 'default' is not exported by node_modules/dayjs/dayjs.min.js issue, add @rollup/plugin-commonjs as a dev dependency and configure your jest.config.js like below:

import { nodeResolve } from '@rollup/plugin-node-resolve';
import commonjs from '@rollup/plugin-commonjs';
import { terser } from "rollup-plugin-terser";

export default {
  input: 'src/index.js',
  output: {
    file: 'dist/index.min.js',
    format: 'cjs',
    plugins: [
      terser()
    ]
  },
  plugins: [
    nodeResolve(),
    commonjs()
  ]
};

[risalfajar]

1.10.7, error still happened

Have tried the workaround but still not working

dayjs is not a function

[sineraves]

Came across the Error: 'default' is not exported by node_modules/dayjs/dayjs.min.js error today with 1.10.7.

Had success with:

import dayjs from 'dayjs/esm';

[SeryiBaran]

It even worked for me with import dayjs from 'dayjs', with this config:

// rollup.config.js
import resolve from '@rollup/plugin-node-resolve';
import commonjs from '@rollup/plugin-commonjs';
import typescript from 'rollup-plugin-typescript2';

export default {
  input: './src/main.ts',
  output: {
    file: './build/main.js',
    format: 'cjs',
  },
  plugins: [
    resolve({
      exportConditions: ['node'],
    }),
    commonjs(),
    typescript(),
  ],
};