Lodash bundle size of 150kb. Why?


I’m using the budle visualizer and I was confused to see that lodash is using 150kb in my bundle. I would have expected half of it?

I’m importing lodash like this:

import lodash from 'lodash';

On client startup I replace underscore:

Meteor.startup(() => {
  // Use lodash instead of underscore
  _ = lodash;

What might be the reason for the doubled bundle size?


Best regards,


Just tried a reproduction on a fresh project and it comes out as 72kb:

Maybe both the minified and unminified versions (or other files from that package) are being individually imported elsewhere?

I’ve an import on the client/main.jsx and the server/main.js. Nothing else in my app. Not sure whether some other module is importing lodash as well.

The lodash import is caused by semantic-ui-react, although this should work according to #830. By using https://github.com/lodash/babel-plugin-lodash my imports from semantic-ui-react seem not to work. I do the imports like this:

import Grid from 'semantic-ui-react/dist/commonjs/collections/Grid';


Error running template: ReferenceError: Grid is not defined
    at SearchPage.render (imports/scenes/Start/SearchPage.jsx:41:7)

Part of my .babelrc:

  "plugins": [
    ["lodash", { "id": ["lodash", "semantic-ui-react"] }],

Any ideas what might be wrong in my setup?

I’m assuming you got your answer from https://github.com/Semantic-Org/Semantic-UI-React/issues/830?

Well it gave me an explanation, why it was not working before. Unfortunately I had another problem then. I used

import { Grid } from 'semantic-ui-react';

Babel replaced it to

import Grid from 'semantic-ui-react/dist\commonjs\collections/Grid';

and I receive the error that the module cannot be found. The path was a mix of slashes and backslashes. Looks like a Windows problem.

Happy to hear further suggestions.