Problem with ESM import syntax with pluginutils

[brettz9]

Hi,

Thanks for the very handy plugin.

As per rollup/plugins#171 , it seems that as long as pluginutils is exporting a default (only), your ESM syntax at

rollup-plugin-babel/src/index.js

Line 2 in ae788a3

import { createFilter } from 'rollup-pluginutils';

should by importing it with a syntax like this instead:

import pluginutils from 'rollup-pluginutils';

const {createFilter} = pluginutils;

And actually, with the old version of pluginutils deprecated, it really should be pointing to @rollup/pluginutils instead:

import pluginutils from '@rollup/pluginutils';

const {createFilter} = pluginutils;

[brettz9]

Btw, while it may work with some compilers or configurations, the above is required for those which adhere strictly to ESM.

[Andarist]

There is an ongoing effort to migrate this plugin to the plugins monorepo - rollup/plugins#108 . I'm afraid we won't be fixing this for v4, but I will make sure that it's fixed for the upcoming v5 (which is going to be released when this mentioned PR lands). Hope you understand.

Fixed there in rollup/plugins@050ceca