CODEWITHSUNDEEP
javascriptlodashes6-modules
Luca Reghellin
Luca Reghellin

Reputation: 8103

What is the final way to import es lodash modules?

So, I know there are a lot of similar questions here, I read all, as well as several web articles. Still, I cannot find a solution. I simply want to import es modules from lodash. Currently using rollup via codekit app.

Simply doing one of the following, will always end up in an empty js file:

import each from 'lodash-es';
import { each } from 'lodash-es';
import each from 'lodash-es/forEach';
import each from 'node_modules/lodash-es';

They all will end with the empty (currently compiling in iife):

(function () {
    'use strict';
})();

Why?

Upvotes: 0

Views: 1117

Answers (1)

Juho Vepsäläinen
Juho Vepsäläinen

Reputation: 26873

If the function isn't used in the code in any way, it will get stripped from the production output due to a process called tree shaking. It's an optimization that looks at code imports and then eliminates any unused code as a result.

It turns out that was the case here as each wasn't used and it was imported only.

Upvotes: 4

Related Questions